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Journal articles on the topic 'Pestalotiopsis theae'

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Published: 18 May 2024

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1

Wang, Z. H., Z. X. Zhao, N. Hong, et al. "Characterization of Causal Agents of a Novel Disease Inducing Brown-Black Spots on Tender Tea Leaves in China." Plant Disease 101, no. 10 (2017): 1802–11. http://dx.doi.org/10.1094/pdis-04-17-0495-re.

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A novel disease characterized by small brown-black spots (1 to 2 mm in diameter) on tender tea leaves (Camellia sinensis) has been observed in many regions of Hubei Province, China, which severely affects the yield and quality of tea. Tea leaf samples with typical symptoms were collected from three major tea-cultivation regions of Hubei, and were subjected to pathogen isolation for etiological analysis. As a result, 34 Pestalotiopsis isolates were obtained from 20 samples, and they were identified as Pestalotiopsis theae (14 isolates), P. camelliae (12), and P. clavispora (8), determined by mo

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2

Permana, Erwin Irawan, and Farriza Diyasti. "Surveilans Insidensi Penyakit Gugur Daun Karet Pestalotiopsis sp. di Provinsi Kalimantan Barat." AGROSCRIPT: Journal of Applied Agricultural Sciences 4, no. 1 (2022): 24–31. http://dx.doi.org/10.36423/agroscript.v4i1.971.

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Kejadian penyakit gugur daun karet (GDK) Pestalotiopsis sp. yang ditemukan menyerang Sumatera pada tahun 2019 membuat perhatian banyak pihak karena serangan penyakit ini mampu menurunkan produktivitas karet hingga 80%. Berbagai informasi dikumpulkan terkait penyebaran serangan di Indonesia dan teknik pengendalian guna memperoleh pendekatan yang tepat dalam pengelolaan penyakit GDK Pestalotiopsis sp. Tulisan ini bertujuan mengkonfirmasi keberadaan Pestalotiopsis sp. penyebab penyakit GDK, dan mengetahui kejadian penyakit di wilayah Kalimantan Barat sebagai kantong serangan penyakit. Pengambilan

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3

Nagata, Tadahiro, Yasuo Ando, and Akira Hirota. "Phytotoxins from Tea Gray Blight Fungi,Pestalotiopsis longisetaandPestalotiopsis theae." Bioscience, Biotechnology, and Biochemistry 56, no. 5 (1992): 810–11. http://dx.doi.org/10.1271/bbb.56.810.

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4

Shimada, A., I. Takahashi, T. Kawano, and Y. Kimurab. "Chloroisosulochrin, Chloroisosulochrin Dehydrate, And Pestheic Acid, Plant Growth Regulators, Produced By Pestalotiopsis Theae." Zeitschrift für Naturforschung B 56, no. 8 (2001): 797–803. http://dx.doi.org/10.1515/znb-2001-0813.

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New plant growth regulators, named chloroisosulochrin, chloroisosulochrin dehydrate and pestheic acid, have been isolated from the culture filtrate of Pestalotiopsis theae grown on a Raulin-Thom medium. Their structures have been established by spectroscopic and chemical methods. The biological activities of these compounds have been examined using bioassay methods with lettuce and rice seedlings

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5

Yang, Xiaoping, and Huiqing Zhang. "Synergistic interaction of tea saponin with mancozeb against Pestalotiopsis theae." Crop Protection 40 (October 2012): 126–31. http://dx.doi.org/10.1016/j.cropro.2012.04.013.

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6

Tuset, J. J., C. Hinarejos, and J. L. Mira. "First Report of Leaf Blight on Sweet Persimmon Tree by Pestalotiopsis theae in Spain." Plant Disease 83, no. 11 (1999): 1070. http://dx.doi.org/10.1094/pdis.1999.83.11.1070c.

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During July 1998, a leaf blight caused by Pestalotiopsis theae (Saw.) Stey. was observed at an incidence of 18 to 20% in sweet persimmon (Diospyros kaki L.fil.) orchards in Huelva Province (southwestern Spain). Symptoms appeared on leaves as large grayish brown circular ringspots. Usually, they were solitary, but occasionally, two to three spots occurred on an affected leaf. In severe cases, lesions developed on more than one-third of the leaf, resulting in defoliation. Small black acervular conidiomata were visible in the surface of spots. These conidiomata produced fusiform conidia that were

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7

Akone, Sergi Herve, Mustapha El Amrani, Wenhan Lin, Daowan Lai, and Peter Proksch. "Cytosporins F–K, new epoxyquinols from the endophytic fungus Pestalotiopsis theae." Tetrahedron Letters 54, no. 49 (2013): 6751–54. http://dx.doi.org/10.1016/j.tetlet.2013.10.005.

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8

Liu, Shun-Zhi, Guang-Xin Xu, Feng-Ming He, et al. "New Sorbicillinoids with Tea Pathogenic Fungus Inhibitory Effect from Marine-Derived Fungus Hypocrea jecorina H8." Marine Drugs 20, no. 3 (2022): 213. http://dx.doi.org/10.3390/md20030213.

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Four new dimeric sorbicillinoids (1–3 and 5) and a new monomeric sorbicillinoid (4) as well as six known analogs (6–11) were purified from the fungal strain Hypocrea jecorina H8, which was obtained from mangrove sediment, and showed potent inhibitory activity against the tea pathogenic fungus Pestalotiopsis theae (P. theae). The planar structures of 1–5 were assigned by analyses of their UV, IR, HR-ESI-MS, and NMR spectroscopic data. All the compounds were evaluated for growth inhibition of tea pathogenic fungus P. theae. Compounds 5, 6, 8, 9, and 10 exhibited more potent inhibitory activities

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9

KIMURA, Yasuo, Ayumi KOUGE, Kazuto NAKAMURA, et al. "Pesthetoxin, a New Phytotoxin Produced by the Gray Blight Fungus,Pestalotiopsis theae." Bioscience, Biotechnology, and Biochemistry 62, no. 8 (1998): 1624–26. http://dx.doi.org/10.1271/bbb.62.1624.

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10

Chen, Y., W. X. Wang, A. F. Zhang, X. Yang, and Y. L. Xu. "First Report of Pestalotiopsis theae on Loquat (Eriobotrya japonica) in Anhui Province of China." Plant Disease 97, no. 4 (2013): 558. http://dx.doi.org/10.1094/pdis-08-12-0710-pdn.

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Loquat, Eriobotrya japonica (Thunb.) Lindl., is an important fruit that is widely planted and used as an ornamental in Jingxian, Anhui Province, China. Loquat branches with severely spotted leaves and fruits were observed in this region in 2012. Symptoms on leaves consisted of small (0.5 to 1.2 cm in diameter), circular to oblong, greenish-brown lesions that coalesced to form isolated or confluent, dark brown spots. On fruit, the disease appeared as circular to elongated, sunken spots. Expanding lesions spread over the surface resulting in death of the fruit. Acervuli were observed within lesi

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11

Mukhtar, I., H. Li, X. Quan, et al. "First Report of Pestalotiopsis theae Causing Leaf Spot of Ixora chinensis in China." Plant Disease 103, no. 2 (2019): 370. http://dx.doi.org/10.1094/pdis-06-18-1030-pdn.

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12

GUO, Long-Fang, Gao-Ran LIU та Ling LIU. "Caryophyllene-type sesquiterpenoids and α-furanones from the plant endophytic fungus Pestalotiopsis theae". Chinese Journal of Natural Medicines 18, № 4 (2020): 261–67. http://dx.doi.org/10.1016/s1875-5364(20)30032-7.

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13

Marimuthu, Subbagounder, Chinnusamy Karthic, Ashraf A. Mostafa, Nouf Mohammed Al-Enazi, Neveen Abdel-Raouf, and Essam Nageh Sholkamy. "Antifungal activity of Streptomyces sp. SLR03 against tea fungal plant pathogen Pestalotiopsis theae." Journal of King Saud University - Science 32, no. 8 (2020): 3258–64. http://dx.doi.org/10.1016/j.jksus.2020.08.027.

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14

Akone, Sergi Herve, Mustapha El Amrani, Wenhan Lin, Daowan Lai, and Peter Proksch. "ChemInform Abstract: Cytosporins F-K, New Epoxyquinols from the Endophytic Fungus Pestalotiopsis theae." ChemInform 45, no. 16 (2014): no. http://dx.doi.org/10.1002/chin.201416233.

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15

Liu, Shun-Zhi, Xia Yan, Xi-Xiang Tang, Jin-Guo Lin, and Ying-Kun Qiu. "New Bis-Alkenoic Acid Derivatives from a Marine-Derived Fungus Fusarium solani H915." Marine Drugs 16, no. 12 (2018): 483. http://dx.doi.org/10.3390/md16120483.

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Fusarium solani H915 is a fungus derived from mangrove sediments. From its ethyl acetate extract, a new alkenoic acid, fusaridioic acid A (1), three new bis-alkenoic acid esters, namely, fusariumester A1 (2), A2 (3) and B (4), together with three known compounds (5–7), were isolated. The structures of the new compounds were comprehensively characterized by high resolution electrospray ionization-mass spectrometry (HR-ESI-MS), 1D and 2D nuclear magnetic resonance (NMR). Additionally, the antifungal activities against tea pathogenic fungi Pestalotiopsis theae and Colletotrichum gloeosporioides w

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16

Guo, Longfang, Jie Lin, Shubin Niu, Shuchun Liu, and Ling Liu. "Pestalotiones A–D: Four New Secondary Metabolites from the Plant Endophytic Fungus Pestalotiopsis Theae." Molecules 25, no. 3 (2020): 470. http://dx.doi.org/10.3390/molecules25030470.

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Two new xanthone derivatives, pestalotiones A (1) and B (2), one new diphenyl ketone riboside, pestalotione C (7), and one new diphenyl ether, pestalotione D (8), along with five known compounds isosulochrin dehydrate (3), 3,8-dihydroxy-6-methyl-9-oxo-9H-xanthene-1-carboxylate (4), isosulochrin (5), chloroisosulochrin (6), and pestalotether D (9), were isolated from the crude extract of the plant endophytic fungus Pestalotiopsis theae (N635). The structures of the new compounds were unambiguously deduced by HRESIMS and 1D/2D-NMR spectroscopic data. Compound 6 showed modest cytotoxicity against

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17

Zhang, Yuqian, Feiyan Wang, Lijie Wang, et al. "The Response of Growth and Transcriptome Profiles of Tea Grey Blight Disease Pathogen Pestalotiopsis theae to the Variation of Exogenous L-Theanine." International Journal of Molecular Sciences 25, no. 6 (2024): 3493. http://dx.doi.org/10.3390/ijms25063493.

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Tea grey blight disease is one of the most destructive diseases that infects tea and is caused by the pathogen Pestalotiopsis theae (Sawada) Steyaert. L-theanine is a unique non-protein amino acid of the tea plant. Different concentrations of L-theanine exhibit significant inhibitory effects on the growth and sporulation ability of the pathogen causing tea grey blight disease. To understand the effect mechanism of L-theanine on P. theae, transcriptome profiling was performed on the pathogenic mycelium treated with three different concentrations of L-theanine: no L-theanine treatment (TH0), 20

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18

Suwannarach, Nakarin, Kanaporn Sujarit, Jaturong Kumla, Boonsom Bussaban, and Saisamorn Lumyong. "First report of leaf spot disease on oil palm caused by Pestalotiopsis theae in Thailand." Journal of General Plant Pathology 79, no. 4 (2013): 277–79. http://dx.doi.org/10.1007/s10327-013-0453-7.

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19

CHAKRABORTY, B. N., P. BASU, R. DAS, A. SAHA, and U. CHAKRABORTY. "Detection of cross reactive antigens between Pestalotiopsis theae and tea leaves and their cellular location." Annals of Applied Biology 127, no. 1 (1995): 11–21. http://dx.doi.org/10.1111/j.1744-7348.1995.tb06647.x.

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20

Shimada, A., I. Takahashi, T. Kawano, and Y. Kimura. "ChemInform Abstract: Chloroisosulochrin, Chloroisosulochrin Dehydrate, and Pestheic Acid, Plant Growth Regulators, Produced by Pestalotiopsis theae." ChemInform 32, no. 51 (2010): no. http://dx.doi.org/10.1002/chin.200151023.

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21

Niu, Siwen, Xi-Xiang Tang, Zuowang Fan, Jin-Mei Xia, Chun-Lan Xie, and Xian-Wen Yang. "Fusarisolins A–E, Polyketides from the Marine-Derived Fungus Fusarium solani H918." Marine Drugs 17, no. 2 (2019): 125. http://dx.doi.org/10.3390/md17020125.

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Five new (fusarisolins A–E, 1 to 5) and three known (6 to 8) polyketides were isolated from the marine-derived fungus Fusarium solani H918, along with six known phenolics (9 to 14). Their structures were established by comprehensive spectroscopic data analyses, methoxyphenylacetic acid (MPA) method, chemical conversion, and by comparison with data reported in the literature. Compounds 1 and 2 are the first two naturally occurring 21 carbons polyketides featuring a rare β- and γ-lactone unit, respectively. All isolates (1 to 14) were evaluated for their inhibitory effects against tea pathogenic

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22

Liu, Ling, Yu Han, Junhai Xiao, et al. "Chlorotheolides A and B, Spiroketals Generated via Diels–Alder Reactions in the Endophytic Fungus Pestalotiopsis theae." Journal of Natural Products 79, no. 10 (2016): 2616–23. http://dx.doi.org/10.1021/acs.jnatprod.6b00550.

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23

Harikamal, Barman, Roy Aniruddha, and Kumar Das Shaon. "Evaluation of plant products and antagonistic microbes against grey blight (Pestalotiopsis theae), a devastating pathogen of tea." African Journal of Microbiology Research 9, no. 18 (2015): 1263–67. http://dx.doi.org/10.5897/ajmr2015.7391.

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24

Zheng, Shiqin, Zhenghua Du, Xiaxia Wang, Chao Zheng, Zonghua Wang, and Xiaomin Yu. "Metabolic Rewiring in Tea Plants in Response to Gray Blight Disease Unveiled by Multi-Omics Analysis." Metabolites 13, no. 11 (2023): 1122. http://dx.doi.org/10.3390/metabo13111122.

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Gray blight disease, which is caused by Pestalotiopsis-like species, poses significant challenges to global tea production. However, the comprehensive metabolic responses of tea plants during gray blight infection remain understudied. Here, we employed a multi-omics strategy to characterize the temporal transcriptomic and metabolomic changes in tea plants during infection by Pseudopestalotiopsis theae, the causal agent of gray blight. Untargeted metabolomic profiling with ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QTOFMS) revealed extensive metabo

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25

Luo, Haiyu, Qiuyan Zhou, Yecheng Deng, Zhiyong Deng, Zhen Qing, and Wenbin Sun. "Antifungal Activity of the Extract and the Active Substances of Endophytic Nigrospora sp. from the Traditional Chinese Medicinal Plant Stephania kwangsiensis." Natural Product Communications 12, no. 12 (2017): 1934578X1701201. http://dx.doi.org/10.1177/1934578x1701201219.

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To exploit a new source from medical plants for finding bioactive products, endophytic fungi DBR-5 identified as Nigrospora sp., was isolated from the root tubers of the traditional Chinese medicinal plant Stephania kwangsiensis Lo. The antifungal activities of the extract from its fermentation liquids were determined. The ethyl acetate extract of DBR-5 exhibited high and broad antifungal activities against plant pathogenic fungi, and showed high toxicity to Exserohilum turcicum, Bipolaris maydis, Ceratocystis paradoxa, Alternaria oleracea and Cochliobolus miyabeanus with EC50 values respectiv

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26

He, Yunqiang, Yan Li, Yulin Song, et al. "Amplicon Sequencing Reveals Novel Fungal Species Responsible for a Controversial Tea Disease." Journal of Fungi 8, no. 8 (2022): 782. http://dx.doi.org/10.3390/jof8080782.

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Amplicon sequencing is a powerful tool for analyzing the fungal composition inside plants, whereas its application for the identification of etiology for plant diseases remains undetermined. Here, we utilize this strategy to clarify the etiology responsible for tea leaf brown-black spot disease (LBSD), a noticeable disease infecting tea plants etiology that remains controversial. Based on the ITS-based amplicon sequencing analysis, Didymella species were identified as separate from Pestalotiopsis spp. and Cercospora sp., which are concluded as the etiological agents. This was further confirmed

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27

Douanla-Meli, Clovis, and Ewald Langer. "Pestalotiopsis theae (Ascomycota, Amphisphaeriaceae) on seeds of Diospyros crassiflora (Ebenaceae)." Mycotaxon 107, no. 1 (2009): 441–48. http://dx.doi.org/10.5248/107.441.

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28

Kumhar, Kishor Chand, Azariah Babu, Mitali Bordoloi, Priyanka Benarjee, and Hirakjyoti Rajbongshi. "Comparative Bioefficacy of Fungicides and Trichoderma spp. against Pestalotiopsis theae, Causing Grey Blight in Tea (Camellia sp.): An In Vitro Study." International Journal of Current Research in Biosciences and Plant Biology 3, no. 4 (2016): 20–27. http://dx.doi.org/10.20546/ijcrbp.2016.304.004.

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29

"Pestalotiopsis theae. [Distribution map]." Distribution Maps of Plant Diseases, no. 4) (August 1, 1996). http://dx.doi.org/10.1079/dmpd/20046500284.

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Abstract A new distribution map is provided for Pestalotiopsis theae (Sawada) Steyaert. Hosts: Tea (Camellia sinensis), Camellia spp., persimmon (Diospyros kaki) and others. Information is given on the geographical distribution in Africa, Comoros, Congo, Egypt, Ethiopia, Gabon, Ghana, Guinea, Ivory Coast, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Togo, Uganda, Zaire, Zambia, Zimbabwe, Asia, Bangladesh, Brunei, Cambodia, China, Anhui, Fuijian, Guangdong, Guangxi, Guizhou, Jiangxi, Sichuan, Yunnan, Zhejiang, Georgia, Hong Kong, In

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30

"Pestalotiopsis theae (grey: tea blight)." CABI Compendium CABI Compendium (January 7, 2022). http://dx.doi.org/10.1079/cabicompendium.39785.

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31

HERLIYANA, ELIS NINA, PRADHIPTA OKTAVIANTO, and ULFAH JUNIARTI SIREGAR. "Identification and characterization of Pestalotiopsis spp. causing leaf spot and leaf blight on jabon (Neolamarckia spp.) in Indonesia." Biodiversitas Journal of Biological Diversity 23, no. 12 (2023). http://dx.doi.org/10.13057/biodiv/d231253.

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Abstract. Herliyana EN, Oktavianto P, Siregar UJ. 2022. Identification and characterization of Pestalotiopsis spp. causing leaf spot and leaf blight on jabon (Neolamarckia spp.) in Indonesia. Biodiversitas 23: 6547-6556. Jabon (Neolamarckia spp.) is one of the fast-growing trees with high economic value for industrial plantations. Its monoculture planting system is faced with certain problems, such as the leaf spot and leaf blight diseases caused by Pestalotiopsis sp. Therefore, the aim of this research was to describe the morphology of Pestalotiopsis species through macroscopic and microscopi

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32

Liu, Gaoran, Ruiyun Huo, Yanan Zhai, and Ling Liu. "New Bioactive Sesquiterpeniods From the Plant Endophytic Fungus Pestalotiopsis theae." Frontiers in Microbiology 12 (March 31, 2021). http://dx.doi.org/10.3389/fmicb.2021.641504.

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Three new secondary metabolites pestalothenins A–C (1–3), including two new humulane-derived sesquiterpeniods (1 and 2) and one new caryophyllene-derived sesquiterpeniod (3), together with five known compounds (4–8) were isolated from the crude extract of the plant endophytic fungus Pestalotiopsis theae (N635). Their structures were elucidated by the extensive analyses of HRESIMS and NMR spectroscopic data. The absolute configurations of 1–3 were determined by comparison of experimental and calculated electronic circular dichroism (ECD) spectra. The cytotoxic effects of these compounds were ev

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Peredo, Hernán L., and Eduardo Valenzuela F. "Nuevas determinaciones de hongos patógenos forestales en Chile." Boletín Micológico 3, no. 4 (2019). http://dx.doi.org/10.22370/bolmicol.1988.3.4.1554.

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A partir de material vegetal con diferentes síntomas colectados en el Centro Regional de Recolección y Diagnóstico Valdivia, se determinaron los hongos causales. De los organismos, enfermedades o sustratos no determinados válidamente para el país, se describe brevemente la morfología de Pestalotia paeoniae, Pestalotiopsis theae, Harknessia americana, Cladosporium sphaerospermum y Colletotrichum gloeosporioides. Conjuntamente con las descripciones, se entrega sintomatología y sustrato para cada especie fúngica

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Adhikari, Karun, Anupam Raj Khadka, and Kailash Shrestha. "In vitro Antagonism of Trichoderma Isolates and Efficacy of Chemical Fungicides against Mycelial Growth of Pestalotiopsis theae." Journal of the Institute of Agriculture and Animal Science, August 25, 2023, 8–18. http://dx.doi.org/10.3126/jiaas.v37i1.56968.

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Grey leaf blight, one of the most important fungal foliar diseases of tea is caused by Pestalotiopsis spp. An in vitro study was conducted at Agriculture Research Station, Pakhribas to evaluate bio-efficacy of two Trichoderma isolates namely Trichoderma viride and Trichoderma harzianum using dual culture technique. Similarly comparative efficacy of five fungicides viz. Copper Oxychloride 50% WP, Carbendazim 50% WP, Metalaxyl 8% WP + Mancozeb 64 % WP, Carboxin 37.5% WS + Thiram 37.5% WS and Hexaconazole 5% EC at four different concentration of 50 ppm, 100 ppm, 200 ppm and 500 ppm was tested usi

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Sharma, Hemant, Arun Kumar Rai, Rajen Chettri, and Poonam Singh Nigam. "Bioactivites of Penicillium citrinum isolated from a medicinal plant Swertia chirayita." Archives of Microbiology, August 2, 2021. http://dx.doi.org/10.1007/s00203-021-02498-x.

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AbstractEndophytes associated with plants have the property to produce active biomolecules with their possible applications in agro-industrial sectors. This study provides a project work on analyzing various activities of fungal endophytes isolated from Swertia chirayita of Sikkim Himalayan region. Among several fungal endophytes screened, isolate UTCRF6 was found most active with the secretion of enzymes protease, cellulase, amylase and chitinase, as well as other metabolites Indoleacetic acid and siderophores. This endophyte was found active in restricting the growth of phyto-pathogens, incl

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36

Borgohain, Parismita, Purnima Barua, Jagadish Mahanta, and Lakhi Ram Saikia. "Pestalotioid fungi: A rare agent of onychomycosis among agriculture workers." Current Medical Mycology, May 23, 2020. http://dx.doi.org/10.18502/cmm.6.2.2839.

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Background and Purpose: Pestalotioid fungi are ubiquitous environmental molds that have received considerable attention in recent times not only because of their role as a plant pathogen but also owing to their high frequency of retrieval from human diseases. Regarding this, the present study was conducted to investigate onychomycosis caused by pestalotioid fungi, commonly considered important phytopathogens causing grey blight disease in Camellia sinensis. Materials and Methods: A total of 122 agriculture workers were enrolled from Assam, India. Direct microscopic examination was carrie

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Lei, Zhi-Wei, Jianmei Yao, Huifang Liu, Chiyu Ma, and Wen Yang. "Synthesis and Bioactivity of Novel Sulfonate Scaffold-Containing Pyrazolecarbamide Derivatives as Antifungal and Antiviral Agents." Frontiers in Chemistry 10 (June 22, 2022). http://dx.doi.org/10.3389/fchem.2022.928842.

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Novel pyrazolecarbamide derivatives bearing a sulfonate fragment were synthesized to identify potential antifungal and antiviral agents. All the structures of the key intermediates and target compounds were confirmed by nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRMS). The single-crystal X-ray diffraction of the compound T22 showed that pyrazole carbamide is a sulfonate. The in vitro antifungal activities of the target compounds against Colletotrichum camelliae, Pestalotiopsis theae, Gibberella zeae, and Rhizoctonia solani were evaluated at 50 μg/ml. Among the four

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Xu, Guangxin, Feng Ying, Huangming Wu, and Xixiang Tang. "Biocontrol potential of two deep-sea microorganisms against gray blight disease of tea." Egyptian Journal of Biological Pest Control 33, no. 1 (2023). http://dx.doi.org/10.1186/s41938-023-00701-3.

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Abstract Background Gray blight is among the most destructive diseases that affect tea plants worldwide. In this study, microorganisms from deep-sea sediment samples for those with antagonistic effects were screened against gray blight caused by Pestalotiopsis theae. Results Thirty-two and twenty-eight morphologically different deep-sea bacteria and fungi were isolated, respectively. Isolates B5 and A65 clearly inhibited the pathogens in vitro and were prepared as wettable agent powders for evaluation in micro-plot field trials. Foliar application of the 48-h culture of B5 (1 × 108, 2 × 107, 1

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Ma, Wanli, Ming Liu, Lu Liu, et al. "First Report of Pseudopestalotiopsis theae Causing Leaf Spot on Euonymus japonicus in China." Plant Disease, October 3, 2022. http://dx.doi.org/10.1094/pdis-07-22-1722-pdn.

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Euonymus japonicus Thunb., an evergreen shrub, is popular for landscaping in China. In 2021, leaf spot was observed on E. japonicus (about 150 trees) leaves with 40 to 50% disease incidence in Wanzhou urban forest (30°45′N; 108°27′E) of Chongqing, the infected plants were between 5 and 6 years old. The symptoms started to occur from June to July and approximately 30 to 40% of the leaves exhibited leaf spot symptoms from August to September. Initial symptoms appeared as yellow spots of 1.2 to 4.9 mm in diameter, and then expanded to become large and irregular lesions, having white center surrou

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BORA, POPY, L. C. BORA, and R. P. BHUYAN. "Evaluation of some botanicals and microbial bioformulations against grey blight disease of tea (Camellia sinensis)." Indian Journal of Agricultural Sciences 91, no. 1 (2021). http://dx.doi.org/10.56093/ijas.v91i1.110925.

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Abstract:

Grey blight disease of tea (Camellia sinensis) is considered as a major threat to tea plantation owing to adverse affect on yield and quality parameters in tea. In the present study, an effort was made to explore some botanicals and microbial formulations for management of grey blight disease under field condition in the pretext of growing demand of organic tea. Seven botanicals at three concentrations (5.0, 10.0 and 15.0%) and four microbial bioformulations were screened in vitro against Pestalotiopsis theae, the grey blight pathogen. Of the botanicals, significant inhibition was recorded by

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