Journal articles: 'Banana bunchy top disease'

1

Qazi, Javaria. "Banana bunchy top virus and the bunchy top disease." Journal of General Plant Pathology 82, no. 1 (December 8, 2015): 2–11. http://dx.doi.org/10.1007/s10327-015-0642-7.

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KHALID, S., and M. H. SOOMRO. "Banana bunchy top disease in Pakistan." Plant Pathology 42, no. 6 (December 1993): 923–26. http://dx.doi.org/10.1111/j.1365-3059.1993.tb02678.x.

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Arubi, D., Giyanto, D. Dinarty, A. Sutanto, and S. H. Hidayat. "Response of banana germplasms to banana bunchy top virus." IOP Conference Series: Earth and Environmental Science 948, no. 1 (December 1, 2021): 012022. http://dx.doi.org/10.1088/1755-1315/948/1/012022.

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Abstract Banana bunchy top virus (BBTV) is one of the important viruses causing disease in bananas and its infection has the potential to cause yield loss. This study was conducted to evaluate the response of several commercial cultivars (Cavendish, Bebek, Goroho, Tanduk, and Barangan Merah) and wild accessions (Klutuk NTT, Halabanensis, SPn 001, LNT 001, and Microcarpa) of banana to BBTV infection. Transmission of BBTV was carried out through banana aphid Pentalonia nigronervosa, using 20 adult aphids per plant with an acquisition feeding period of 24 hours on BBTV-infected plants and an inoculation feeding period on healthy test plants for 48 hours. Observation on plant growth and disease intensity was conducted for 8 weeks after inoculation. At the end of the observation period, only 5 cultivars, i.e. Cavendish, Bebek, Goroho, Barangan Merah, and Halabanensis showed typical symptoms of BBTV with disease incidence reached 80%, 60%, 20%, 20%, and 20% respectively. Significant inhibition of plant height and leaves width occurred in Cavendish, Bebek, and Goroho i.e. 44.60%, 36.31%; 12.62%, 41.08%; and 25%, 10.13%, respectively. This paper discusses the need for banana germplasm exploration to find sources of resistance to BBTV.

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Prasetyo, Joko, and Sudiono Sudiono. "PEMETAAN PERSEBARAN PENYAKIT BUNCHY TOP PADA TANAMAN PISANG DI PROVINSI LAMPUNG." Jurnal Hama dan Penyakit Tumbuhan Tropika 4, no. 2 (September 16, 2004): 94–101. http://dx.doi.org/10.23960/j.hptt.2494-101.

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Distribution mapping of bunchy top of banana in Lampung Province. Studies on the occurrence of banana bunchy top were conducted in Lampung province from March to May 2003. This study were aimed to make distribution map of banana bunchy top in Lampung. The stratified random sampling were used. The sample comprised 6 districts out of 10 districts in Lampung. Three subdistrics were randomly selected in each district and then 3 villages were also selected in each subdistrict. In each village 3 famer”s gardens were selected as observation area. The distribution map shows that banana bunchy top has spread throughout the 6 districts visually observed, but only 4 districts, that bunchy top incidence could be examined. Banana bunchy top incidence in Bandar Lampung, South Lampung, Central Lampung, and North Lampung were 2.31, 2.23, 1.06, and 0.84 % respectively. Bunchy top virus attacked various types, among them are janten (55.23%), muli (38.88%), kepok (30.47%), ambon (21.52%), raja sere (19.76%), nangka 4.64%), and lilin (3.84%). There were no disease incidence on cultivar tanduk, rejang and susu, thus this fact might be indicated resistance phenomena of these cultivars.

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Kakati, Nilakshi, and P. D. Nath. "Genetic Diversity of Banana Bunchy Top Virus (BBTV) Prevalent in Assam Causing Banana Bunchy Top Disease." International Journal of Current Microbiology and Applied Sciences 7, no. 11 (November 10, 2018): 1547–60. http://dx.doi.org/10.20546/ijcmas.2018.711.178.

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S. R. Adat, S. S. Waghmare, V. K. Mohite A. A. Waghule, and S. S. Patale. "Study of Bunchy Top of Banana Virus (BBTV) and its Control by Integrated Disease Management (IDM)." International Journal of Current Microbiology and Applied Sciences 10, no. 11 (November 10, 2021): 416–29. http://dx.doi.org/10.20546/ijcmas.2021.1011.047.

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India is the top country by Banana production in the world as of 2019, bananas production in India was 30.5 million tonnes that accounts for 26.02% of the world's bananas production. The top 5 countries (others are China, Indonesia, Brazil, and Ecuador) account for 53.94% of it. The world's total bananas production was estimated at 117 million tonnes in 2019.In India, states like Andhra Pradesh, Gujarat, Tamil Nadu, Maharashtra, Kerala, Uttar Pradesh, Bihar and Madhya Pradesh contribute more than 70 per cent of the country's banana production. Banana and plantain (Musa spp.), produced in 10.3 million ha in the tropics, are among the world's top 10 food crops. They are vegetative propagated using suckers or tissue culture plants and grown almost as perennial plantations. They are vulnerable to pests and pathogens, especially viruses which causes reduction in yield and are also hinders to the international exchange of germplasm. The most economically important viruses of banana and plantain are Banana bunchy top virus (BBTV), a complex of banana streak viruses (BSVs) and Banana bract mosaic virus (BBrMV). BBTV is known to cause the most serious economic losses contributing to yield reduction of up to 100% and responsible for a dramatic reduction in cropping area. The BSVs exist as episomal and endogenous forms are known to be worldwide in distribution. In India and the Philippines, BBrMV is known to be economically important.

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Sutrawati, Mimi, and Sempurna Ginting. "First Report of Banana Bunchy Top Disease on Banana in Bengkulu." AGRITROPICA : Journal of Agricultural Sciences 3, no. 2 (December 1, 2020): 82–87. http://dx.doi.org/10.31186/j.agritropica.3.2.82-87.

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Banana is a horticulture crop that has economic value and is widely cultivated in tropical countries. Banana production in Bengkulu province reached 259,748 quintals, then durian (110,387 quintals), tangerines (94,396 quintals) (BPS 2015). Banana bunchy top disease caused by Banana bunchy top virus (BBTV) infection is considered the most crucial virus disease affecting yield losses of a banana plantation in Asia, Africa, and the South Pacific. However, the incidence and molecular characters of BBTV has never been reported in Bengkulu. This research aims to characterize symptom variations, disease incidence, and disease severity of BBTV infection in Bengkulu and virus detection using molecular methods by polymerase chain reaction (PCR). Disease incidence of BBTV was measured based on field symptoms. The disease survey was conducted in Bengkulu city, Bengkulu Utara district, and Rejang Lebong district. The study showed that the incidence of BBTV in Bengkulu City, Bengkulu Utara, and Rejang Lebong ranged from 0% to 100%. The most common symptoms observed in the field involved vein clearing, upturned leaf, chlorotic, and ragged margins, reducing petiole length, distance, lamina width, and stunting. Banana crops that are infected with BBTV in the vegetative phase will not produce fruit. In contrast, viral infection in the generative phase causes the formation of stunted fruit that is not suitable for harvesting. Thus, the potential loss of yield due to stunted disease can reach 100%. This study's results are the first reports of BBTV infection in banana crops in Bengkulu. Disease diagnosis will form the basis of disease control strategies in banana crops.

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Oben, T. T., R. Hanna, J. Ngeve, O. J. Alabi, R. A. Naidu, and P. Lava Kumar. "Occurrence of Banana Bunchy Top Disease Caused by the Banana bunchy top virus on Banana and Plantain (Musa sp.) in Cameroon." Plant Disease 93, no. 10 (October 2009): 1076. http://dx.doi.org/10.1094/pdis-93-10-1076c.

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Banana bunchy top virus (BBTV; genus Babuvirus, family Nanoviridae) is a serious pathogen of banana (AAA genome) and plantain (AAB genome) (Musa sp.). It is transmitted by the banana aphid (Pentalonia nigronervosa) in a persistent manner (1). In recent years, BBTV has emerged as a major constraint to banana and plantain production in several countries of Africa and had been previously confirmed in viz., Burundi, Central African Republic, Republic of Congo, Democratic Republic of Congo, Egypt, Equatorial Guinea, Gabon, Malawi, and Rwanda (1) and more recently in Mozambique and Zambia (2) and Angola (3). To assess the potential threat of BBTV in West-Central Africa, we conducted surveys in August and September 2008 in 36 major banana- and plantain-producing regions of Littoral, South, Southwest, and Western Provinces of Cameroon. DNA was extracted from 520 plants and tested by PCR with primers specific for a conserved domain of BBTV DNA-R segment (4). A 240-bp DNA fragment specific to the virus was amplified in 31 samples from 18 plantain and 13 banana plants from Southwest, Western, and Southern Cameroon. Among virus-positive samples, symptoms (upright leaf growth, small leaves with pale chlorotic margins that choked the throat of the plant creating the bunchy appearance at the top) typical of bunchy top disease were observed only in banana (cv. Cavendish Williams) from Muea in the Southwest Province. PCR products obtained from the symptomatic and asymptomatic banana (Cavendish Williams) from Muea and Abang, respectively, were cloned into pCR2.1 (Invitrogen, Carlsbad, CA) and two independent clones from each isolate were sequenced in both directions. Pairwise comparison of these sequences showed 100% sequence homology. A comparison of these sequences (Accession No. F580970) with corresponding sequences in GenBank showed 99% nt sequence identity with a BBTV isolate from Angola (Accession No. EU851977) and 96 to 98% identity with BBTV isolates belonging to the South Pacific group (Australia, Africa, South Asia, and South Pacific). However, the BBTV isolate from Cameroon showed 85 to 90% sequence identity with isolates belonging to the Asian group (China, Indonesia, Japan, Taiwan, Philippines, and Vietnam). To further confirm the virus identity, complete nucleotide sequence of the DNA-SCP segment that encodes for the virus coat protein was determined using PCR amplification of viral DNA (1), cloning of products into pCR2.1 vector, and sequencing. The derived sequence (1,075 nt; Accession No. GQ249344) in BLAST search at NCBI database revealed 98% nt sequence identity with coat protein gene of BBTV isolate from Burundi (Accession No. AF148943). These results, together with phylogenetic analysis, indicate that BBTV isolates from Cameroon have greater affinity to the South Pacific group. To our knowledge, this is the first report of BBTV in West-Central Africa. The occurrence of BBTV in the Western and Southern provinces of Cameroon, neighboring north of Gabon, suggests a possible spread of the virus from Gabon. This report also underscores the need to monitor other countries of West Africa for BBTV and enforce quarantine measures to prevent further spread through infected suckers from endemic areas of West and Central Africa. References: (1) I. Amin et al. Virus Genes 36:191, 2008. (2) W. T. Gondwe et al. InfoMusa 16:38, 2007. (3) P. L. Kumar et al. Plant Pathol. 58:402, 2009. (4) S. Mansoor et al. Mol. Biotechnol. 30:167, 2005.

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Wirya, Gusti Ngurah Alit Susanta, I. Putu Sudiarta, and Dewa Gede Wiryangga Selangga. "Disease Severity and Molecular Identification of Banana bunchy top virus, Infecting Local Banana in Bali Island." Jurnal Perlindungan Tanaman Indonesia 24, no. 1 (July 7, 2020): 11. http://dx.doi.org/10.22146/jpti.54882.

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Bunchy top symptoms on banana has been reported in Bali Island since early 2011. Symptoms variation were observed in the field similar to infection of Banana bunchy top virus (BBTV). The identity of the BBTV in Bali on the basis of DNA-S nucleotide sequence has not been studied, therefore research was conducted to identify the species of BBTV infecting local banana in Bali based on sequence analysis. Research activities were initiated by collecting field samples from several local banana growing areas in Bali Island. Incidence of bunchy top disease in all locations reached 8% to 44% with disease severity ranged from 2.6% to 30%. Identification of BBTV from field samples were done by polymerase chain reaction using specific primers for BBTV (CPF/CPR) followed by sequence analysis of amplified DNA target. Specific BBTV DNA fragment was successfully amplified from 10 field samples; sequence analysis of DNA fragments showed their highest homology with BBTV. In addition the phylogenetic analysis confirmed the close relationship of BBTV isolates from Bali with various BBTV isolates from Indonesia and other isolates from the Asian group in GeneBank.

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10

Allen, RN. "Further studies on epidemiological factors influencing control of banana bunchy top disease and evaluation of control measures by computer simulation." Australian Journal of Agricultural Research 38, no. 2 (1987): 373. http://dx.doi.org/10.1071/ar9870373.

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The basic infection rate of bunchy top disease in established bananas averaged 0.0342 new infections per infectious plant per day, but varied seasonally with a maximum in summer. The mean distance of spread for the aphid vector was 15.2 m. The latent period was 59.8 days and correlated with the time required for the growth of 3.7 new banana leaves. A microcomputer program was written to simulate spread of banana bunchy top disease in space and time. In the absence of disease control, disease spread from an initial primary infection in July or January to 124 or 153 infected plants, respectively, in one year. When disease control was maintained by removing diseased plants whenever the number of infected plants exceeded a given threshold, the numbers of diseased plants detected each inspection were positively correlated with the infection threshold, but the numbers of inspections required to maintain control increased markedly as the infection threshold was decreased. A practice of removing apparently healthy plants within 5 m of plants detected with bunchy top disease symptoms in five or more leaves was found to locate about 30% of the remaining undetected infected plants when disease was first detected in a plantation. However, its use as a routine control measure was ineffective in reducing the number of inspections required to maintain control or in reducing the risk of disease spreading to adjoining plantations. Removal of apparently healthy plants within 5 m had some bearing on disease control when applied around plants with disease symptoms in two leaves or less, but also caused a significant loss of healthy plants.

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Allen, RN. "Corrigendum - Further studies on epidemiological factors influencing control of banana bunchy top disease and evaluation of control measures by computer simulation." Australian Journal of Agricultural Research 38, no. 2 (1987): 373. http://dx.doi.org/10.1071/ar9870373c.

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The basic infection rate of bunchy top disease in established bananas averaged 0.0342 new infections per infectious plant per day, but varied seasonally with a maximum in summer. The mean distance of spread for the aphid vector was 15.2 m. The latent period was 59.8 days and correlated with the time required for the growth of 3.7 new banana leaves. A microcomputer program was written to simulate spread of banana bunchy top disease in space and time. In the absence of disease control, disease spread from an initial primary infection in July or January to 124 or 153 infected plants, respectively, in one year. When disease control was maintained by removing diseased plants whenever the number of infected plants exceeded a given threshold, the numbers of diseased plants detected each inspection were positively correlated with the infection threshold, but the numbers of inspections required to maintain control increased markedly as the infection threshold was decreased. A practice of removing apparently healthy plants within 5 m of plants detected with bunchy top disease symptoms in five or more leaves was found to locate about 30% of the remaining undetected infected plants when disease was first detected in a plantation. However, its use as a routine control measure was ineffective in reducing the number of inspections required to maintain control or in reducing the risk of disease spreading to adjoining plantations. Removal of apparently healthy plants within 5 m had some bearing on disease control when applied around plants with disease symptoms in two leaves or less, but also caused a significant loss of healthy plants.

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Widyastuti, Dewi, and Sri Hendrastuti Hidayat. "PENGARUH WAKTU INFEKSI VIRUS KERDIL PISANG TERHADAP KERENTANAN TIGA KULTIVAR." Jurnal Hama dan Penyakit Tumbuhan Tropika 5, no. 1 (March 12, 2005): 42–49. http://dx.doi.org/10.23960/j.hptt.1542-49.

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Effects of time of infection of banana bunchy top virus on susceptibility of three banana cultivars. Banana Bunchy Top, caused by Banana Bunchy Top Virus (BBTV), is one of the most important banana diseases in Indonesia. Approach to reduce disease incidence involves prevention of early infection especially on susceptible cultivars. This study was conducted to evaluate the response of three banana cultivars, Ambon Kuning, Tanduk, and Kepok, to different time of infection of BBTV i.e., one week and three week after adaptation period, and one week during adaptation period. Banana plants used in the study were prepared through in vitro propagation (tissue culture) and virus transmission was done using aphid vector, Pentalonia nigronervosa. In addition to observation on symptom expression, inhibition of plant height, and reduction of leaf size, conformation of virus infection was done through indirect ELISA. Virus concentration on different part of the plant, young leaf, stem, and root, tends to decrease over the time due to the ability of BBTV to move from cell to cell before replication takes place. It is evidenced that BBTV was able to infect banana in all growth stages although the younger plant is more susceptible to BBTV. Although concentration of the virus in the tested plant is considered high, symptoms expression of BBTV infection can be differentiated from moderate to very severe. Response of banana plants to infection of BBTV can be grouped into susceptible (Ambon Kuning), moderate tolerant (Tanduk), and tolerant (Kepok).

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Bashir, Sana, Sumaira Farrakh, Tayyaba Yasmin, Aish Muhammad, Tasmia Bashir, Hakim Manghwar, Freddy Mora-Poblete, Shehzad Iqbal, Alaa Baazeem, and Muhammad Zeeshan Hyder. "Quantitation of Multipartite Banana Bunchy Top Virus Genomic Components and Their Transcripts in Infected Tissues of Banana (Musa acuminata)." Agronomy 12, no. 12 (November 28, 2022): 2990. http://dx.doi.org/10.3390/agronomy12122990.

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Banana bunchy top disease (BBTD), caused by a Banana Bunchy Top Virus (BBTV), is the most devastating viral disease of bananas. The genome of multipartite BBTV is about 1 Kb in size and comprises six circular single-stranded (ss) DNA components, namely DNA-R, C, S, M, U3, and N. Gene expression in multipartite DNA viruses is highly flexible due to variations in the copy number and transcript levels of individual genomic components. This enables them to adapt to changing conditions and maintain optimal fitness. In the current study, the copy number of each genetic component of BBTV and its transcript level were determined in the leaf, midrib, and root tissue of the infected banana plant. The results of the study showed that DNA copies (copies/ng) were higher in midrib (11,105 ± 10,704.42), followed by leaf (6902.91 ± 1651.14), and were lowest in root (23.49 ± 9.21) tissues. In contrast, the transcript level was highest in the root (312.45 ± 106.69) and lowest in the midrib (0.72 ± 0.16). This suggests that BBTV independently regulates the transcriptional level of each DNA component. The distribution of BBTV in different tissues assists the identification of significantly higher viral load tissues for early and sensitive disease diagnosis, which will be beneficial for better disease management.

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Pal, Priyanka, Chhavi Malik, Dharmendra Pratap, and Deepak Panwar. "Molecular Identification of Banana Bunchy Top Virus Associated with Banana Plantation in Uttar Pradesh." International Journal of Current Microbiology and Applied Sciences 11, no. 7 (July 10, 2022): 145–52. http://dx.doi.org/10.20546/ijcmas.2022.1107.016.

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Banana is the most important fruit in India after mango .Its cultivation is affected by various diseases. Among them BBTD (Banana bunchy top disease) caused by BBTV (Banana bunchy top virus) is one of the most important constraints in banana production worldwide. BBTV is a complex circular single stranded DNA virus with multiple genomic components (DNA1-6) and causes heavy economic loss in banana cultivated areas. BBTV is transmitted by its vector (Pentalonia nigronervosa). On the basis of symptoms such as green streaks on pseudostem, stunted growth, leaf atrophy, bunchy top appeared on infected plants, leaf samples were taken for isolating genomic DNA using CTAB method with some modification in Selvarajan protocol. DNA was quantified (50ug/lit DNA). PCR amplification was performed on all isolates from jail chungi, Skin center, CCSU Campus, Healthy sample Meerut, field sample no.1 (District Lakhimpur khedi) U.P for early detection of virus. PCR done with the help of specific primers CP(Coat protein gene) and PR(Partial Replicase gene) using total extracted DNA.The Agarose gel was loaded with ladder DNA (1kb), followed by sample DNA. Among DNA samples, all showed amplification by specific primer pair of BBTV.During the study it has been clear that the isolates of U.P were infected by BBTV. So, based on this analysis, it can be concluded that, detection of virus early and proper eradication of infectious plants is very important before passing of virus to another healthy plants.

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Jekayinoluwa, Tripathi, Obiero, Muge, Dale, and Tripathi. "Developing Plantain for Resistance to Banana Aphids by RNA Interference." Proceedings 36, no. 1 (January 16, 2020): 54. http://dx.doi.org/10.3390/proceedings2019036054.

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Banana bunchy top virus (BBTV) is one of the world’s invasive species. Banana aphid (Pentalonia nigronervosa) is found in all banana producing areas and it is the insect pest known to transmit BBTV causing banana bunchy top disease (BBTD) in bananas and plantains (Musa spp.) and can cause a significant yield loss of up to 100% in severe cases. Controlling the spread of BBTD has been very challenging since there is no known endogenous gene in the Musa germplasm that could confer resistance to BBTV. Excessive dependence on insecticides for disease control is detrimental to the environment and off-target-organisms. The objective of this study was to use RNA interference (RNAi) targeting the acetylcholinesterase (AChE) gene in banana aphid to develop resistance against aphids in farmer preferred plantain cultivars. This could help sustain smallholder farmers in areas where BBTD is an epidemic. To achieve this, plantain cultivars were initiated using plant tissue culture techniques and rapidly multiplied using Temporary Immersion Bioreactor. This was followed by generation of embryogenic cell suspension (ECS), Agrobacterium-mediated transformation of banana and plantain ECS using a RNAi plasmid construct and molecular characterization of putative transgenic lines. Agro-infected ECS of banana and plantain cultivars were regenerated on selective medium and produced several transgenic lines. Molecular characterization confirmed the presence of transgene in about 80% transgenic lines. Preliminary glasshouse screening of transgenic lines showed reduction in population of banana aphids in comparison to control non-transgenic plants. This is the first report on using RNAi targeting AChE gene for developing transgenic plantain that are resistant to banana aphids.

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Picaza, Ador R., and Douglas M. Doloriel. "An Agent-Based Computer Simulation on Banana Bunchy Top Disease." International Journal of Environment, Agriculture and Biotechnology 3, no. 2 (2018): 637–40. http://dx.doi.org/10.22161/ijeab/3.2.43.

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., Yasmin, T., S. Khalid ., M. H. Soomro ., S. A. Malik ., H. Shah ., and I. Ahmad . "Specificity of Host-pathogen Interaction of Banana Bunchy Top Disease." Journal of Biological Sciences 1, no. 4 (March 15, 2001): 212–13. http://dx.doi.org/10.3923/jbs.2001.212.213.

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Dale, J. L., D. A. Phillips, and J. N. Parry. "Double-stranded RNA in Banana Plants with Bunchy Top Disease." Journal of General Virology 67, no. 2 (February 1, 1986): 371–75. http://dx.doi.org/10.1099/0022-1317-67-2-371.

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Efendi, Rizki Anwar, Suparman SHK, and Harman Hamidson. "BIOLOGY OF Pentalonia nigronervosa COQUEREL ON VARIOUS ZINGIBERACEOUS CROPS." BIOVALENTIA: Biological Research Journal 8, no. 2 (July 9, 2022): 118–29. http://dx.doi.org/10.24233/biov.8.2.2022.308.

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Pentalonia nigronervosa Coquerel (Hemiptera; Aphididae) is the main vector of banana bunchy top disease caused by Banana Bunchy Top Virus (BBTV). The disease is an important and most damaging disease to the crop because infected bananas fail to produce fruits. As the vector of BBTV, P. nigronervosa is able to lives not only on banana plants but also on others plants, especially those belong to Family Zingiberaceae. The objective of this research was to reveal the biology of P. nigronervosa on banana and other plant species belong to Family Zingiberaceae commonly found around banana cultivation areas. The research was conducted in the Laboratory of Entomology, Department of Plant Protection, Faculty of Agriculture, Sriwijaya University from June to December 2021. The research was an experimental research arranged in a Completely Randomized Design using plant species as treatment and was replicated 10 times of replications. Young suckers of banana and zingiberaceous plants were used to rear the banana aphid where all biological aspects of the aphid were observed. P. nigronervosa and the young suckers were placed in a transparent pot covered with transparent plastic with a window made from cheese cloth to facilitate air movement. Room temperature was set to approximately 25oC since the aphid grow and reproduce well under such temperature. The results showed that P. nigronervosa are able to live and reproduce not only on banana but also on seven species of Zingiberaceous plants with little variation of some morphological and biological parameters. The significant different was found between biological characteristics of the aphid lived on torch ginger and cardamom which had longer life cycle but smaller fecundity compared to other experimental hosts used in the research.

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Arimbawa, I. Made, Gusti Ngurah Alit Susanta Wirya, and I. Putu Sudiarta. "First report of Banana bunchy top virus on heliconia (Heliconia spp.) in Bali, Indonesia." Jurnal Hama dan Penyakit Tumbuhan Tropika 22, no. 1 (March 31, 2022): 77–82. http://dx.doi.org/10.23960/jhptt.12277-82.

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Banana bunchy top virus (BBTV) mostly infects Musa spp. which causes banana bunchy top disease (BBTD), the most devastating viral disease in banana cultivation all over the world. During field survey in Sekar Bumi Tropical Farm located in Kerta Village, 15 heliconia plant samples showed green streak on lamina leaves that similar to common BBTD symptoms were collected. Further research was then conducted to identify molecular characteristic of BBTD in heliconia showing green streak. Molecular identification was conducted using polymerase chain reaction (PCR). Specific primers to amplified DNA target were used in this study: mRep/F (5’-GCGTGAAACGCACAAAAGGCC-3’) and mRep/R (5’-GCATACGTTGTCAAACCTTCTCCTC-3’). The expected 240 bp fragment target of partial master replication (mRep) gene was successfully amplified from ten out of 15 samples. Sequence analysis confirmed that the symptomatic heliconia samples were infected with BBTV and falls into the same clade with BBTV from the Asian Group.

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Niyongere, C., E. Ateka, T. Losenge, G. Blomme, and P. Lepoint. "SCREENING MUSA GENOTYPES FOR BANANA BUNCHY TOP DISEASE RESISTANCE IN BURUNDI." Acta Horticulturae, no. 897 (May 2011): 439–47. http://dx.doi.org/10.17660/actahortic.2011.897.60.

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Smith, M. C., J. Holt, L. Kenyon, and C. Foot. "Quantitative epidemiology of Banana Bunchy Top Virus Disease and its control." Plant Pathology 47, no. 2 (April 1998): 177–87. http://dx.doi.org/10.1046/j.1365-3059.1998.00230.x.

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Akhsan, Ni’matuljannah, Sofian Sofian, and Irwansyah Irwansyah. "Karakteristik Dan Intensitas Penyakit Banana bunchy top virus (BBTV) Tanaman Pisang Di Beberapa Kecamatan Di Kabupaten Kutai Kartanegara." Agrifarm : Jurnal Ilmu Pertanian 8, no. 2 (January 16, 2020): 51. http://dx.doi.org/10.24903/ajip.v8i2.790.

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Banana is a fruit commodity that is consumed by many people. Banana dwarf disease is an important disease, because its presence has spread in banana plants in Indonesia. This study aims to identify the characteristics and intensity of BBTV attacks on banana plants with different planting patterns, sanitation and weed control. This research was conducted in 5 districts in Kutai Kartanegara Regency, namely Samboja, Muara Jawa, Loa Janan, Muara Badak, Loa Kulu. The method used is a survey method that is conducting direct observations in the field using modified score assessments based on morphology of diseased plants (Brooks, 1999). The data obtained were processed to determine the intensity of disease per plot with the formula of disease severity (Agrios, 1997). Disease intensity data were compared based on different banana cropping conditions, sanitation and weed control.Based on the survey results it can be concluded that, in banana tree land with a monoculture pattern, in sanitation and with weed control, the intensity of BBTV disease is higher compared to mixed cropping patterns, without sanitation and without weed control. The character of attack is generally in the assessment score 3 with the characteristics: (1) the edge of the leaf is quite severe yellowing, (2) the existence of leaf narrowing or twisting (3) the occurrence of distortion, dwarf and necrosis (4) found more than four infected banana stems in a clump.

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Ondh-Obame, Jean Alban, Auguste Ndoutoume Ndong, Pamphile Nguema Ndoutoumou, Priscilla Chancia Mindze Assembe, Ignace Davy Mendoume Minko, and Kowir Pambo Bello. "Prévalence du Banana Bunchy Top Disease (BBTD) dans la zone de Ntoum au Gabon." International Journal of Biological and Chemical Sciences 14, no. 3 (June 18, 2020): 739–49. http://dx.doi.org/10.4314/ijbcs.v14i3.8.

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Le Banana Bunchy Top Disease (BBTD) est la maladie virale la plus dévastatrice du bananier impactant considérablement sa production. Le BBTD a été signalé au Gabon pour la première fois par la FAO avec une prévalence de plus de 90%. La présente étude vise à déterminer la prévalence du BBTD, la sévérité et l’importance du vecteur dans la zone de Ntoum. Après une enquête, 1800 pieds de bananiers dans 6 foyers d’infestation, ont été examinés de façon aléatoire avec un système de notation randomisé en transect croisé X. La méthode d’enquête par observation visuelle des symptômes du BBTD avec une échelle de notation de 1 à 5 a été utilisée. Les foyers d’infestation retenus présentent une sévérité de la maladie avancée avec le symptôme visuel de niveau 5 prépondérant et une prévalence moyenne de 21%. Le vecteur, Pentalonia nigronervosa est un insecte présent dans la zone mais à des niveaux d’importance variable. Il serait souhaitable d’évaluer la résistance variétale des Musa spp. et de montrer l’influence des facteurs biotiques et abiotiques sur la propagation de la maladie.Mots clés : Bananier, Pentalonia nigronervosa, foyers d’infestation, sévérité, importance du vecteur. English Title: Prevalence of Banana Bunchy Top Disease (BBTD) in the Ntoum area in Gabon Banana Bunchy Top Disease (BBTD) is the banana's most devastating viral disease, with a significant impact on its production. BBTD was first reported in Gabon by FAO with a prevalence of more than 90%. This study aims to determine the prevalence of BBTD, the severity and importance of the vector in the Ntoum area. After a survey, 1800 feet of banana trees in 6 outbreaks, were examined randomly with a randomized scoring system in transect crossed X. The method of visual observation of BBTD symptoms with a rating scale of 1 to 5 was used. The selected outbreaks have an advanced disease severity with the predominant level 5 visual symptom and an average prevalence of 21%. The vector, Pentalonia nigronervosa is an insect present in the area but at varying levels. It would be desirable to assess the varietal resistance of Musa spp. and to show the influence of biotic and abiotic factors on the spread of the disease.Keywords: Banana, Pentalonia nigronervosa, source of infestation, severity, importance of vector.

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Ngatat, Sergine, Rachid Hanna, Jules Lienou, Richard T. Ghogomu, Sidonie Prisca K. Nguidang, Aime C. Enoh, Bertrand Ndemba, et al. "Musa Germplasm A and B Genomic Composition Differentially Affects Their Susceptibility to Banana Bunchy Top Virus and Its Aphid Vector, Pentalonia nigronervosa." Plants 11, no. 9 (April 29, 2022): 1206. http://dx.doi.org/10.3390/plants11091206.

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Banana bunchy top disease (BBTD), caused by the banana bunchy top virus (BBTV, genus Babuvirus), is the most destructive viral disease of banana and plantain (Musa spp.). The virus is transmitted persistently by the banana aphid, Pentalonia nigronervosa Coquerel (Hemiptera: Aphididae). While research efforts have focused on screening Musa genotypes for BBTD resistance, comparatively little work has been carried out to identify resistance to banana aphids. This study assessed 44 Musa germplasm of different A and B genome composition for the performance of banana aphids under semicontrolled environmental screenhouse conditions and in a field trial established in a BBTD endemic location. In the screenhouse, the AA diploid Calcutta 4 had the lowest apterous aphid density per plant (9.7 ± 4.6) compared with AAB triploid Waema, which had the highest aphid densities (395.6 ± 20.8). In the field, the highest apterous aphid density per plant (29.2 ± 6.7) occurred on the AAB triploid Batard and the lowest (0.4 ± 0.2) on the AA diploid Pisang Tongat. The AA diploid Tapo was highly susceptible to BBTD (100% infection) compared with the genotypes Balonkawe (ABB), PITA 21 (AAB), Calcutta 4 (AA), and Balbisiana Los Banos (BB), which remained uninfected. The Musa genotypes with apparent resistance to BBTD and least susceptibility to aphid population growth provide options for considering aphid and BBTD resistance in banana and plantain breeding programs.

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Gogoi, Shankar Hemanta, Ranima Mishra, and Palash Deb Nath. "Association of phytoplasmas with banana bunchy top viral disease in banana plants in Assam, India." Phytopathogenic Mollicutes 9, no. 1 (2019): 147. http://dx.doi.org/10.5958/2249-4677.2019.00074.4.

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Nkengla-Asi, Lilian, Aman Bonaventure Omondi, Vincent Che Simo, Elizabeth Assam, Sergine Ngatat, and Brenda Boonabaana. "Gender dynamics in banana seed systems and impact on banana bunchy top disease recovery in Cameroon." Outlook on Agriculture 49, no. 3 (May 1, 2020): 235–44. http://dx.doi.org/10.1177/0030727020918333.

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Enhancing opportunities for women and men in banana production is vital for promoting gender equity in sub-Saharan Africa. This study investigated the gendered differences in access to and decision-making over banana production resources and services in banana bunchy top disease affected areas in Cameroon. A mixed methods approach was used, comprising an intra-household survey ( n = 109 households). Six sex disaggregated focus group discussions and key informant interviews were organized to collect primary data in three communities in Ambam District in Southern Cameroon. These data were used to compare men and women in resource access and production within households and villages. Men had greater say in decision-making over productive resources and information services even when women were more involved in actual seed and site selection. Planting materials were mainly sourced from old fields although men were more likely to buy banana seeds than women farmers. In practical terms, access to and decision-making over production resources and services by women in the banana seed systems is vital for equitable outcomes. Disease pressure on banana production experienced in southern Cameroon may influence gendered access to resources upsetting resource access equity. In theoretical terms, the study reveals dimensions of gender linked differences in resource control even where participation was evident. Thus, it indicates the need for in-depth understanding of power and social relations within households and the communities. This study reveals the nexus of disease challenge and resource access in banana systems. The study will be of interest to development practitioners, researchers and extension agents.

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Dato, Kéladomé Maturin Géoffroy, Mahougnon Robinson Dégbègni, Mintodê Nicodème Atchadé, Martine Zandjanakou Tachin, Mahouton Norbert Hounkonnou, and Bonaventure Aman Omondi. "Spatial parameters associated with the risk of banana bunchy top disease in smallholder systems." PLOS ONE 16, no. 12 (December 3, 2021): e0260976. http://dx.doi.org/10.1371/journal.pone.0260976.

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The Banana Bunchy Top Disease (BBTD), caused by the Banana Bunchy Top Virus (BBTV) is the most important and devastating in many tropical countries. BBTD epidemiology has been little studied, mixed landscape smallholder systems. The relative risks associated with this disease vary between geographical areas and landscapes. This work analyzed the management and vegetation conditions in smallholder gardens to assess the factors linked to landscape-level BBTV transmission and management. Mapping was done in this study area which is in a BBTD-endemic region, involving farmers actively managing the disease, but with household-level decision making. A spatial scanning statistic was used to detect and identify spatial groups at the 5% significance threshold, and a Poisson regression model was used to explore propagation vectors and the effect of surrounding vegetation and crop diversity. Spatial groups with high relative risk were identified in three communities, Dangbo, Houéyogbé, and Adjarra. Significant associations emerged between the BBTD prevalence and some crop diversity, seed systems, and BBTD management linked factors. The identified factors form important candidate management options for the detailed assessment of landscape-scale BBTD management in smallholder communities.

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Horser, Cathryn L., Robert M. Harding, and James L. Dale. "Banana bunchy top nanovirus DNA-1 encodes the ‘master’ replication initiation protein." Journal of General Virology 82, no. 2 (February 1, 2001): 459–64. http://dx.doi.org/10.1099/0022-1317-82-2-459.

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Banana bunchy top nanovirus has a multicomponent, circular single-stranded DNA genome comprising at least six integral components, BBTV DNA-1 to -6, which have been consistently associated with bunchy top disease worldwide. At least three other components, BBTV S1, S2 and Y, which have been isolated from Taiwanese BBTV isolates, do not appear to be integral components. We show here that both BBTV DNA-1 and S1, which encode replication initiation (Rep) proteins, were capable of self-replication when bombarded into banana embryogenic cell suspensions. However, only BBTV DNA-1 was capable of directing the replication of two other BBTV genomic components, namely BBTV DNA-3 which encodes the coat protein, and DNA-5 which encodes a retinoblastoma binding-like protein. These results indicate that (i) BBTV DNA-1 is the minimal replicative unit of BBTV and encodes the ‘master’ viral Rep and (ii) BBTV S1 is possibly a satellite DNA which is unable to replicate integral BBTV components.

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Jekayinoluwa, Temitope, Jaindra Nath Tripathi, Benjamin Dugdale, George Obiero, Edward Muge, James Dale, and Leena Tripathi. "Transgenic Expression of dsRNA Targeting the Pentalonia nigronervosa acetylcholinesterase Gene in Banana and Plantain Reduces Aphid Populations." Plants 10, no. 4 (March 24, 2021): 613. http://dx.doi.org/10.3390/plants10040613.

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The banana aphid, Pentalonia nigronervosa, is the sole insect vector of banana bunchy top virus (BBTV), the causal agent of banana bunchy top disease. The aphid acquires and transmits BBTV while feeding on infected banana plants. RNA interference (RNAi) enables the generation of pest and disease-resistant crops; however, its effectiveness relies on the identification of pivotal gene sequences to target and silence. Acetylcholinesterase (AChE) is an essential enzyme responsible for the hydrolytic metabolism of the neurotransmitter acetylcholine in animals. In this study, the AChE gene of the banana aphid was targeted for silencing by RNAi through transgenic expression of AChE dsRNA in banana and plantain plants. The efficacy of dsRNA was first assessed using an artificial feeding assay. In vitro aphid feeding on a diet containing 7.5% sucrose, and sulfate complexes of trace metals supported aphid growth and reproduction. When AChE dsRNA was included in the diet, a dose of 500 ng/μL was lethal to the aphids. Transgenic banana cv. Cavendish Williams and plantain cvs. Gonja Manjaya and Orishele expressing AChE dsRNA were regenerated and assessed for transgene integration and copy number. When aphids were maintained on elite transgenic events, there was a 67.8%, 46.7%, and 75.6% reduction in aphid populations growing on Cavendish Williams, Gonja Manjaya, and Orishele cultivars, respectively, compared to those raised on nontransgenic control plants. These results suggest that RNAi targeting an essential aphid gene could be a useful means of reducing both aphid infestation and potentially the spread of the disease they transmit.

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Elayabalan, Sivalingam, Sreeramanan Subramaniam, and Ramasamy Selvarajan. "Banana bunchy top disease (BBTD) symptom expression in banana and strategies for transgenic resistance: A review." Emirates Journal of Food and Agriculture 27, no. 1 (2015): 55. http://dx.doi.org/10.9755/ejfa.v27i1.19197.

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Adegbola, R. O., O. Ayodeji, O. O. Awosusi, G. I. Atiri, and P. Lava Kumar. "First Report of Banana bunchy top virus in Banana and Plantain (Musa spp.) in Nigeria." Plant Disease 97, no. 2 (February 2013): 290. http://dx.doi.org/10.1094/pdis-08-12-0745-pdn.

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Plantain and banana (Musa spp.) are among the most important staple crops for food and income generation for the rural and urban populations in the humid forest agroecological zone of West Africa. Until recently, Cucumber mosaic virus (genus Cucumovirus) and Banana streak virus (genus Badnavirus) were the only viruses reported to occur in Musa spp. in West Africa. In 2011, an outbreak of banana bunchy top disease (BBTD) caused by Banana bunchy top virus (BBTV; genus Babuvirus, family Nanoviridae) was reported in Ouémé Département (6°30′N and 2°36′E) in the Republic of Benin (2). BBTV is one of the most economically important pathogens of Musa spp. It is well established in Central Africa and also in Angola, Malawi, and Zambia in Southern Africa (2). Plants infected at early growth stages are severely dwarfed and do not bear fruit. BBTV is transmitted by the banana aphid Pentalonia nigronervosa, which is widespread in Africa (1). The regions in the Republic of Benin affected by BBTV border Ogun State (7°00′N and 3°35′E) of Nigeria. Epidemiological investigations were conducted during May 2012 at 31 locations in Ogun State to determine the potential risk of BBTV spreading into Nigeria. Plants with typical symptoms of BBTD (stunting, narrow and shortened leaves, chlorotic streaks on petioles and pseudostem) were observed in four locations: Ilashe, Odan-Itoro, Ido-Ologun, and Igbogila. Total DNA was extracted from 90 leaf samples randomly collected from symptomatic and asymptomatic banana and plantain plants in these areas. Samples were tested for BBTV by polymerase chain reaction (PCR) using primer pairs, mREP-F and mREP-R, which amplifies a 241-bp of BBTV DNA-mRep segment (1), and Scp-F and Scp-R specific for approximately 1075-bp BBTV DNA-S that encodes coat protein gene (1). The amplicons of expected size were obtained from 17 of 90 samples analyzed (18.8%). BBTV in the symptomatic plants was further confirmed by nucleic acid spot hybridization (NASH) assay using DIG-labeled 1,075-bp probe corresponding to coat protein gene and chromogenic detection as per the previously described protocol (3). The DIG-probe specifically reacted with nucleic acid from the symptomatic plants, but not with negative controls, providing conclusive evidence for the BBTV. The PCR products of DNA-mRep segment amplified from three banana plants infected with BBTV collected in Ilashe (Ipokia Local Government Area) were purified and sequenced in both directions. The sequences of these isolates were 100% identical with each other (GenBank Accession Nos. JX290301, JX290302, and JX290303). A BLASTn search revealed 100% nucleotide sequence identity with a BBTV isolate from Benin (JQ437548) and 99 to 100% identity with DNA-mRep sequences of several other BBTV isolates from Africa, Australia, India, and the South Pacific. Further analysis of the 241-bp mRep gene sequences with Neighbor-Joining phylogenetic analysis grouped the BBTV isolate with the South Pacific isolates. To our knowledge, this is the first report of BBTV in Nigeria. This underscores need for surveys to assess the extent of BBTV spread in Nigeria and strict implementation of phytosanitary measures, including restrictions on the movement of planting material from disease-affected regions, to prevent further spread of this important disease. References: (1) P. L. Kumar et al. Virus Res. 159:171, 2011. (2) B. Lokossou et al. New Dis. Rep. 25:13, 2012. (3) W. S. Xie and J. S. Hu. Phytopathol. 85:339, 1995.

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Nkengla-Asi, Lilian, Favour Eforuoku, Olamide Olaosebikan, Temitope Adejoju Ladigbolu, Delphine Amah, Rachid Hanna, and P. Lava Kumar. "Gender Roles in Sourcing and Sharing of Banana Planting Material in Communities with and without Banana Bunchy Top Disease in Nigeria." Sustainability 13, no. 6 (March 17, 2021): 3310. http://dx.doi.org/10.3390/su13063310.

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Banana bunchy top disease (BBTD) is the most devastating disease of banana and plantain (Musa spp.). The disease spreads through the use of infected vegetative propagules and the banana aphid (Pentalonia nigronervosa) is the virus vector. This study seeks to understand the gender dimensions and sociocultural aspects of banana seed (vegetative propagule) sourcing and sharing practices among men and women farmers, and its influence on BBTD spread and disease control efforts. Data were collected from 300 banana farmers (187 men and 113 women) in BBTD and non-BBTD areas in southwest Nigeria. The results revealed that seed sharing within the communities is a social responsibility with members expected to share banana seed with the needy mainly as gifts rather than sold for cash. Men farmers mostly sourced seed from old fields, while women sourced seed from relatives. Harvesting of banana seed was predominantly the responsibility of men with women as helpers. Both men and women farmers in the non-BBTD area cultivated larger farm sizes and harvested more banana planting material than farmers in the BBTD area. The existing seed sourcing practices among men and women farmers heighten the risk of BBTD spread. Awareness raising on disease spread through infected seeds should consider gender-differentiated roles and social practices to reduce its spread within communities.

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Ahmed Rao, Saghir, Mazhar Ali Qureshi ., Abdul Latif Khanzada ., Muhammad Ali Khanzad ., Muhammad Aslam Rajpu ., and Khalid Iqbal Rajput . "Occurrence and Incidence of Banana Bunchy Top Disease in Southern Part of Sindh." Plant Pathology Journal 1, no. 2 (April 15, 2002): 74–75. http://dx.doi.org/10.3923/ppj.2002.74.75.

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Hyder, Muhammad Zeeshan, Shahzad Hussain Shah, Shahid Hameed, and Syed Muhammad Saqlan Naqvi. "Evidence of recombination in the Banana bunchy top virus genome." Infection, Genetics and Evolution 11, no. 6 (August 2011): 1293–300. http://dx.doi.org/10.1016/j.meegid.2011.04.015.

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Shekhawat, Upendra K. S., Thumballi R. Ganapathi, and Ashok B. Hadapad. "Transgenic banana plants expressing small interfering RNAs targeted against viral replication initiation gene display high-level resistance to banana bunchy top virus infection." Journal of General Virology 93, no. 8 (August 1, 2012): 1804–13. http://dx.doi.org/10.1099/vir.0.041871-0.

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The banana aphid-transmitted Banana bunchy top virus (BBTV) is the most destructive viral pathogen of bananas and plantains worldwide. Lack of natural sources of resistance to BBTV has necessitated the exploitation of proven transgenic technologies for obtaining BBTV-resistant banana cultivars. In this study, we have explored the concept of using intron-hairpin-RNA (ihpRNA) transcripts corresponding to viral master replication initiation protein (Rep) to generate BBTV-resistant transgenic banana plants. Two ihpRNA constructs namely ihpRNA-Rep and ihpRNA-ProRep generated using Rep full coding sequence or Rep partial coding sequence together with its 5′ upstream regulatory region, respectively, and castor bean catalase intron were successfully transformed into banana embryogenic cells. ihpRNA-Rep- and ihpRNA-ProRep-derived transgenic banana plants, selected based on preliminary screening for efficient reporter gene expression, were completely resistant to BBTV infection as indicated by the absence of disease symptoms after 6 months of viruliferous aphid inoculation. The resistance to BBTV infection was also evident by the inability to detect cDNAs coding for viral coat protein, movement protein and Rep protein by RT-PCR from inoculated transgenic leaf extracts. Southern analysis of the two groups of transgenics showed that ihpRNA transgene was stably integrated into the banana genome. The detection of small interfering RNAs (siRNAs) derived from the ihpRNA transgene sequence in transformed BBTV-resistant plants positively established RNA interference as the mechanism underlying the observed resistance to BBTV. Efficient screening of optimal transformants in this vegetatively propagated non-segregating fruit crop ensured that all the transgenic plants assayed were resistant to BBTV infection.

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Harding, R. M., T. M. Burns, and J. L. Dale. "Virus-like particles associated with banana bunchy top disease contain small single-stranded DNA." Journal of General Virology 72, no. 2 (February 1, 1991): 225–30. http://dx.doi.org/10.1099/0022-1317-72-2-225.

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Lepoint, P. C. E., R. Sibomana, C. Niyongere, and G. Blomme. "CULTURAL PRACTICES FOR BANANA BUNCHY TOP DISEASE MANAGEMENT: A SUSTAINABLE OPTION FOR BURUNDIAN SMALLHOLDERS?" Acta Horticulturae, no. 986 (April 2013): 111–17. http://dx.doi.org/10.17660/actahortic.2013.986.9.

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Su, Hong-Ji, Ting-Hsuan Hung, and Meng-Ling Wu. "First Report of Banana Streak Virus Infecting Banana Cultivars (Musa spp.) in Taiwan." Plant Disease 81, no. 5 (May 1997): 550. http://dx.doi.org/10.1094/pdis.1997.81.5.550a.

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Banana (Musa sapientam L.) is an economically important crop for both export and local consumption in Taiwan. Recently, leaf symptoms characteristic of banana streak disease (1) were found on banana cv. Mysore (AAB group) introduced from Australia in the germ plasm collection of the Taiwan Banana Research Institute. The citrus mealybug (Planococus citri) has been shown to transmit banana streak virus (BSV) but not banana bunchy top virus or cucumber mosaic virus (CMV) (2). When mealybugs were fed on leaves of diseased Mysore banana and transferred to healthy banana cv. Cavendish seedlings in a growth chamber, the latter developed fine chlorotic streaks characteristic of symptoms caused by BSV within 1 to 3 months. Some chlorotic streaks became necrotic. BSV was detected in diseased but not healthy leaves of Mysore and Cavendish bananas by polymerase chain reaction (PCR) with primer pairs of BSV provided by J. E. Thomas of Queensland Department of Primary Industries. Subsequently, fine chlorotic streaks were observed in leaves of Cavendish banana in several fields in southern Taiwan. Some of these diseased plants developed severe leaf necrosis, causing heart rot of spindle leaves characteristic of symptoms caused by CMV. Presence of BSV in these plants was verified by PCR assay. However, CMV was also detected by double antibody sandwich-enzyme-linked immunosorbent assay with a monoclonal antibody to CMV, indicating that these plants were simultaneously infected by both viruses. This is the first report of BSV infecting Musa spp. in Taiwan. References: (1) B. E. L. Lockhart. Phytopathology 76:995, 1986. (2) B. E. L. Lockhart. 1995 Food & Fertilizer Technol. Center (ASPAC) Tech. Bull. 143. 11 pp.

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Irwansyah, Irwansyah, Sofian Sofian, and Ni'matuljannah Akhsan. "Identifikasi Karakteristik Gejala Serangan Banana Bunchy Top Virus (BBTV) dan Intensitasnya pada Tanaman Pisang di Beberapa Kecamatan di Kabupaten Kutai Kartanegara." Jurnal Agroekoteknologi Tropika Lembab 2, no. 1 (August 1, 2019): 55. http://dx.doi.org/10.35941/jatl.2.1.2019.2536.55-60.

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Banana is one of the fruit commodities that are consumed by many people. Banana dwarf disease is an important disease in Indonesia.This study aims to identify the characteristics of BBTV attack symptoms on banana plants and the physical characteristics of banana plants which are attacked by different planting patterns, sanitation and weed control.This research was carried out in several sub-districts in Kutai Kartanegara District, namely Samboja sub-district, Muara Jawa sub-district, Loa Janan sub-district, Muara Badak sub-district, Loa Kulu sub-district. The method used is the survey method, which is direct observation in the field using a modified score based on the appearance of the sick morphology of the plant (Brooks, 1999).Data obtained from each plot was processed to determine the intensity of each-plot disease using the formula for calculating disease severity (Agrios, 1997). Disease intensity data are compared based on sampling land conditions. Based on the results of a survey conducted at several observation points spread across 5 sub-districts, it can be concluded that the symptom severity is higher in mixed-crop, uses sanitation and weed control compared to monoculture, without sanitation and weed control. The average score of the assessment is a score of 3 with characteristics: (1) the edges of the leaves turn yellow quite severe, (2) the narrowing of the leaves or twisting (3) the occurrence of distortion, dwarf and necrosis (4) found more than four infected banana stems in clump.

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Selvarajan, R., M. Mary Sheeba, V. Balasubramanian, R. Rajmohan, N. Lakshmi Dhevi, and T. Sasireka. "Molecular Characterization of Geographically Different Banana bunchy top virus Isolates in India." Indian Journal of Virology 21, no. 2 (October 2010): 110–16. http://dx.doi.org/10.1007/s13337-010-0020-1.

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Niyongere, C., T. Losenge, E. M. Ateka, N. Ntukamazina, P. Ndayiragije, A. Simbare, P. Cimpaye, P. Nintije, P. Lepoint, and G. Blomme. "Understanding banana bunchy top disease epidemiology in Burundi for an enhanced and integrated management approach." Plant Pathology 62, no. 3 (August 21, 2012): 562–70. http://dx.doi.org/10.1111/j.1365-3059.2012.02676.x.

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Ngatat, Sergine, R. Hanna, P. L. Kumar, S. M. Gray, M. Cilia, R. T. Ghogomu, and D. A. Fontem. "Relative susceptibility of Musa genotypes to banana bunchy top disease in Cameroon and implication for disease management." Crop Protection 101 (November 2017): 116–22. http://dx.doi.org/10.1016/j.cropro.2017.07.018.

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Das, Tanmoy, and Amrita Banerjee. "Distribution, molecular characterization and diversity of banana bunchy top virus in Tripura, India." VirusDisease 29, no. 2 (May 2, 2018): 157–66. http://dx.doi.org/10.1007/s13337-018-0451-7.

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Alabi, Tunrayo R., Julius Adewopo, Ojo Patrick Duke, and P. Lava Kumar. "Banana Mapping in Heterogenous Smallholder Farming Systems Using High-Resolution Remote Sensing Imagery and Machine Learning Models with Implications for Banana Bunchy Top Disease Surveillance." Remote Sensing 14, no. 20 (October 18, 2022): 5206. http://dx.doi.org/10.3390/rs14205206.

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Banana (and plantain, Musa spp.), in sub-Saharan Africa (SSA), is predominantly grown as a mixed crop by smallholder farmers in backyards and small farmlands, typically ranging from 0.2 ha to 3 ha. The crop is affected by several pests and diseases, including the invasive banana bunchy top virus (BBTV, genus Babuvirus), which is emerging as a major threat to banana production in SSA. The BBTV outbreak in West Africa was first recorded in the Benin Republic in 2010 and has spread to the adjoining territories of Nigeria and Togo. Regular surveillance, conducted as part of the containment efforts, requires the identification of banana fields for disease assessment. However, small and fragmented production spread across large areas poses complications for identifying all banana farms using conventional field survey methods, which is also time-consuming and expensive. In this study, we developed a remote sensing approach and machine learning (ML) models that can be used to identify banana fields for targeted BBTV surveillance. We used medium-resolution synthetic aperture radar (SAR), Sentinel 2A satellite imagery, and high-resolution RGB and multispectral aerial imagery from an unmanned aerial vehicle (UAV) to develop an operational banana mapping framework by combining the UAV, SAR, and Sentinel 2A data with the Support Vector Machine (SVM) and Random Forest (RF) machine learning algorithms. The ML algorithms performed comparatively well in classifying the land cover, with a mean overall accuracy (OA) of about 93% and a Kappa coefficient (KC) of 0.89 for the UAV data. The model using fused SAR and Sentinel 2A data gave an OA of 90% and KC of 0.86. The user accuracy (UA) and producer accuracy (PA) for the banana class were 83% and 78%, respectively. The BBTV surveillance teams used the banana mapping framework to identify banana fields in the BBTV-affected southwest Ogun state of Nigeria, which helped in detecting 17 sites with BBTV infection. These findings suggest that the prediction of banana and other crops in the heterogeneous smallholder farming systems is feasible, with the precision necessary to guide BBTV surveillance in large areas in SSA.

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Omondi, Bonaventure A., Misheck M. Soko, Innocent Nduwimana, Ronald T. Delano, Celestin Niyongere, Alice Simbare, Donald Kachigamba, and Charles Staver. "The effectiveness of consistent roguing in managing banana bunchy top disease in smallholder production in Africa." Plant Pathology 69, no. 9 (September 6, 2020): 1754–66. http://dx.doi.org/10.1111/ppa.13253.

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Dietzgen, RG, and JE Thomas. "Properties of Virus-Like Particles Associated With Banana Bunchy Top Disease in Hawaii, Indonesia and Tonga." Australasian Plant Pathology 20, no. 4 (1991): 161. http://dx.doi.org/10.1071/app9910161.

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Anhalt, M. D., and R. P. P. Almeida. "Effect of Temperature, Vector Life Stage, and Plant Access Period on Transmission of Banana bunchy top virus to Banana." Phytopathology® 98, no. 6 (June 2008): 743–48. http://dx.doi.org/10.1094/phyto-98-6-0743.

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The study of the transmission biology of insect-borne plant viruses is important to develop disease control practices. We characterized the transmission of a nanovirus, Banana bunchy top virus (BBTV), by its aphid vector Pentalonia nigronervosa Coquerel (Hemiptera, Aphididae) with respect to temperature, vector life stage, and plant access time. Adult aphids transmitted BBTV more efficiently than third instar nymphs at all temperatures tested. Adult aphids transmitted the virus more efficiently at 25 and 30°C than at 20°C, but temperature had no impact on transmission efficiency by nymphs. By decoupling the relationship between temperature and aphid BBTV acquisition or inoculation, we determined that temperature affected inoculation events more strongly than acquisition. Longer plant access periods increased viral acquisition and inoculation efficiencies in a range of 60 min to 24 h. Both BBTV acquisition and inoculation efficiencies peaked after 18 h of plant access period. We also show that BBTV transmission by P. nigronervosa requires a latent period. Our results demonstrate that vector transmission of BBTV is affected by temperature, vector life stage, and plant access period.

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Kumar, P. Lava, R. Hanna, O. J. Alabi, M. M. Soko, T. T. Oben, G. H. P. Vangu, and R. A. Naidu. "Banana bunchy top virus in sub-Saharan Africa: Investigations on virus distribution and diversity." Virus Research 159, no. 2 (August 2011): 171–82. http://dx.doi.org/10.1016/j.virusres.2011.04.021.

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Thomas, J. E., and R. G. Dietzgen. "Purification, characterization and serological detection of virus-like particles associated with banana bunchy top disease in Australia." Journal of General Virology 72, no. 2 (February 1, 1991): 217–24. http://dx.doi.org/10.1099/0022-1317-72-2-217.

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Journal articles on the topic 'Banana bunchy top disease'

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