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Artykuły w czasopismach na temat „Nematodes”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Ono, Masaya, Yoichi Hayakawa, and Toyoshi Yoshiga. "Bacterial feeding nematodes ingest haemocytes in the haemocoel of the insect Galleria mellonella." Parasitology 147, no. 3 (2019): 279–86. http://dx.doi.org/10.1017/s0031182019001550.

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AbstractInsect parasitic nematodes have acquired mechanisms to evade their host immune response for successful parasitism. Despite the importance of understanding of the evolution of evasion mechanisms from host immunity, insect immune response against non-parasitic nematodes has not been well studied. In our previous study, we demonstrated that a non-insect parasitic nematode Caenorhabditis elegans was not encapsulated by haemocytes in the larvae of the greater wax moth Galleria mellonella. To understand how nematodes influence insect haemocytes to escape encapsulation, we examined the effect

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Grewal, Parwinder S., Edwin E. Lewis, and Sudha Venkatachari. "Allelopathy: a possible mechanism of suppression of plant-parasitic nematodes by entomopathogenic nematodes." Nematology 1, no. 7 (1999): 735–43. http://dx.doi.org/10.1163/156854199508766.

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Abstract A possible mechanism of suppression of a plant-parasitic nematode Meloidogyne incognita by entomopathogenic nematodes is described. Heat-killed entomopathogenic nematodes Steinernema feltiae and S. riobrave temporarily suppressed penetration of the root-knot nematode M. incognita into tomato roots, but live nematodes had no effect. Infective juvenile M. incognita were repelled from all entomopathogenic nematode treatments that included their symbiotic bacteria. They were repelled by Galleria mellonella cadavers infected with S. carpocapsae, S. feltiae, and S. riobrave and from cell-fr

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Xu, Zhen, Yong-Qiang Zhao, Dong-Jing Yang, Hou-Jun Sun, Cheng-Ling Zhang, and Yi-Ping Xie. "Attractant and repellent effects of sweet potato root exudates on the potato rot nematode, Ditylenchus destructor." Nematology 17, no. 1 (2015): 117–24. http://dx.doi.org/10.1163/15685411-00002856.

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Potato rot nematode (Ditylenchus destructor) is one of the most damaging pests of sweet potato in the northern region of China. Glasshouse and field experiments were conducted to explore the main invasion route used by potato rot nematodes during infection of sweet potato plants. The nematode’s host location behaviour was also investigated. Results suggested that substantial yield losses of sweet potato caused by D. destructor parasitism depend upon the existence of wounds on seedling roots. Therefore, reducing the number of nematodes that invade through such wounds would be an effective contr

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Gabrielle Lino De Andrade, Larissa, Elvira Maria Regis Pedrosa, Ênio Farias França e Silva, Mário Monteiro Rolim, Ivis Andrei Campos e Silva, and Edinalda Andrade Silva. "Mobilidade de Pratylenchus coffeae em Solos com Diferentes Texturas e Níveis de Salinidade." Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde 28, no. 5 (2024): 586–93. https://doi.org/10.17921/1415-6938.2024v28n5p586-593.

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O nematoide das lesões radiculares Pratylenchus coffeae parasita importantes culturas agronômicas no Brasil e no mundo. A salinidade do solo é outro fator que limita drasticamente a produtividade das culturas. Além disso, a textura do solo tem grande importância na movimentação e distribuição dos nematoides no solo. Objetivou-se neste estudo avaliar a mobilidade de juvenis e adultos de P. coffeae em solos de diferentes texturas sob diferentes níveis de salinidade. O dispositivo experimental consistiu em colunas de PVC com 10 cm de comprimento × 4,4 cm de diâmetro interno, preenchidas com solos

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Yeates, G. W. "Abundance, diversity, and resilience of nematode assemblages in forest soilsThis article is one of a selection of papers published in the Special Forum on Towards Sustainable Forestry — The Living Soil: Soil Biodiversity and Ecosystem Function." Canadian Journal of Forest Research 37, no. 2 (2007): 216–25. http://dx.doi.org/10.1139/x06-172.

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Forest litter and soil may contain >10 × 106 individual nematodes·m–2 and, regionally, >400 species. Root-feeding nematodes may be pathogenic to young plants; microbial-feeding nematodes may increase turnover of the microbial pool; predacious and omnivorous nematodes represent higher trophic levels. The spatial distribution and abundance of nematode species in forests reflect soil type, soil fertility, climate, canopy and understorey plant species, litter depth, forest age, and management. Nematodes may be important in forest nurseries; they occur throughout the rooting depth of forest t

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Bird, A. F. "The influence of the actionmycete,Pasteuria penetrans, on the host–parasite relationship of the plant-parasitic nematode,Meloidogyne javanica." Parasitology 93, no. 3 (1986): 571–80. http://dx.doi.org/10.1017/s0031182000081270.

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SUMMARYThe actinomycete,Pasteuria penetrans, is a specific endoparasite of various plant-parasitic nematodes. When parasitizing the root-knot nematode (Meloidogyne javanical) the nematode's capacity to reproduce is destroyed and feeding on and stimulation of the plant host are unaffected even though the bulbous body of the female nematode becomes filled with spores. Parasitism by the actinomycete does not alter the rate of growth in the early stages of nematode development although the non-parasitized female grows more rapidly than the parasitized one for a short time immediately after the fin

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Townsend, Monica L., Don C. Steinkraus, and Donn T. Johnson. "Mortality Response of Green June Beetle (Coleoptera: Scarabaeidae) to Four Species of Entomopathogenic Nematodes." Journal of Entomological Science 29, no. 2 (1994): 268–75. http://dx.doi.org/10.18474/0749-8004-29.2.268.

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Four species of entomopathogenic nematodes, Steinernema carpocapsae (Weiser) (All strain), S. feltiae (Filipjev) (NC strain), S. glaseri (Steiner), and Heterorhabditis bacteriophora Poinar, were tested in the laboratory for their effect on larvae of the green June beetle, Cotinus nitida L. When nematodes were injected into the foregut of larvae (ca. 1,000 nematodes per larva), S. carpocapsae, S. feltiae, S. glaseri, and H. bacteriophora caused similar mortality (65, 45, 65, and 63%, respectively). At a concentration of 10 nematodes per larva, S. carpocapsae produced significantly higher mortal

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Hai, Tang, and Ji Ya Qi Du. "The Response of the Free-Living Nematodes Species and Quantity to Grazing Intensity of Meadow Grassland." Advanced Materials Research 518-523 (May 2012): 5185–88. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.5185.

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Abstract. To study of meadow grassland soil free lifing nematodes types and quantities under the grazing intensity, the results show that we captured 13 species free lifing nematodes in different grazing area.With the increase of the grazing intensity the total number of Free life nematodes gradually reduce, among them Bacterial feeding nematode and Omnivorous predator nematode gradually reduced with the increase of nematode grazing intensity and the Fungal-feeding nematodes quantities gradually increased . the number of the Bacterial feeding nematode and Fungal-feeding nematodes gradually dec

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ÇAKMAK, Taylan. "The nematode assemblages of a lake ecosystem (Lake Korugöl Natural Park, Düzce, West Black Sea Cost of Türkiye): ecology and biodiversity patterns with first reports of 10 genera to the Türkiye nematofauna." Turkish Journal of Entomology 47, no. 3 (2023): 283–94. http://dx.doi.org/10.16970/entoted.1273242.

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This research was conducted to reveal the soil nematode fauna of Korugöl, Düzce and to contribute to the nematode diversity of the Western Black Sea Region of Türkiye. Field studies within the scope of the study were implemented in 2021. As a result of the study, 29 families, 45 genera and 46 nematode taxa were identified. 10 nematode taxon, namely Aporcelinus, Baladorylaimus, Dorylaimoides, Euteratocephalus, Labronemella, Laimydorus, Lindseyus, Metateratocephalus, Paractinolaimus and Tripylella are the first report for Türkiye's nematofauna. Classification of nematodes according to their feed

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Gede Swibawa, I., and Titik Nur Aeny. "KARAKTERISTIK KOMUNITAS NEMATODA DI PADANG GOLF SUKARAME (PGS) BANDAR LAMPUNG." Jurnal Hama dan Penyakit Tumbuhan Tropika 7, no. 2 (2007): 80–90. http://dx.doi.org/10.23960/j.hptt.2780-90.

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ABSTRACTCharacteristic of Nematodes Community at PGS Golf Course Bandar Lampung. Golf course is a unique ecosystem where plant parasitic nematodes inhabit and become important pest because they reduce the quality of the grass. The pest problems on golf course can be indicated by its characteristics of nematode community. Survey on nematodes community at PGS Golf Course Bandar Lampung was conducted from March to December 2004. The objective was to study the characteristics of nematode community in the part of golf courses hole (green, collar, apron, and fairway). Soil samples were taken from fi

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Bekal, Sadia, Terry L. Niblack, and Kris N. Lambert. "A Chorismate Mutase from the Soybean Cyst Nematode Heterodera glycines Shows Polymorphisms that Correlate with Virulence." Molecular Plant-Microbe Interactions® 16, no. 5 (2003): 439–46. http://dx.doi.org/10.1094/mpmi.2003.16.5.439.

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Parasitism genes from phytoparasitic nematodes are thought to be essential for nematode invasion of the host plant, to help the nematode establish feeding sites, and to aid nematodes in the suppression of host plant defenses. One gene that may play several roles in nematode parasitism is chorismate mutase (CM). This secreted enzyme is produced in the nematode's esophageal glands and appears to function within the plant cell to manipulate the plant's shikimate pathway, which controls plant cell growth, development, structure, and pathogen defense. Using degenerate polymerase chain reaction prim

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Kimpinski, J., Y. A. Papadopoulos, B. R. Christie, K. B. McRae, and C. E. Gallant. "Invasion and reproduction of Pratylenchus penetrans in birdsfoot trefoil cultivars." Phytoprotection 80, no. 3 (2005): 179–84. http://dx.doi.org/10.7202/706191ar.

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Greenhouse trials were conducted to determine the levels of invasion of birdsfoot trefoil(Lotus corniculatus) cultivars and lines by the root-lesion nematode (Pratylenchuspenetrans). Numbersof nematodesin roots grown in 50-cm3 polystyrene starter pots were determined 6 weeks after planting. Nematodes were detected in the roots of all cultivars and lines, though the degree of invasion varied significantly. In the first screening trial, carried out in 1994 on 23 cultivars and lines, NB90-104, Upstart, and Viking harbored the lowest population densities of nematodes with levels below 1 000 g-1 of

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Yeates, Gregor W., Surinder Saggar, Carolyn B. Hedley, and Chris F. Mercer. "Increase in 14C-carbon translocation to the soil microbial biomass when five species of plant-parasitic nematodes infect roots of white clover." Nematology 1, no. 3 (1999): 295–300. http://dx.doi.org/10.1163/156854199508298.

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Abstract Clonal white clover growing in pots was inoculated with Heterodera trifolii, Meloidogyne hapla, Meloidogyne trifoliophila, Pratylenchus sp., or Xiphinema diversicaudatum, pulse-labelled with 14C and after 15 days the distribution of 14C in compartments of the soil: plant: nematode system determined. Nematode inoculation had no effect on shoot, root and soil microbial biomasses, but the nematode treatments significantly affected the distribution of 14C in these compartments. The greatest translocation of 14C to the soil was in pots with X. diversicaudatum, M. hapla or M. trifoliophila.

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Kang, Heonil, Hwanseok Je, and Insoo Choi. "Occurrence and Distribution of Root-Knot Nematodes in Kiwifruit Orchard." Research in Plant Disease 29, no. 1 (2023): 45–51. http://dx.doi.org/10.5423/rpd.2023.29.1.45.

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The study was conducted to investigate the infestation and distribution of plant-parasitic nematodes on kiwi orchards in Korea. Plant parasitic nematodes genus and densities were investigated at a total of 102 sites in Jeollanam-do, Gyeongsangnam-do, and Jeju-do, which are the main production areas of domestic kiwi orchards. Plant parasitic nematodes detected were of 9 genera, including root-knot nematodes (Meloidogyne spp.), spiral nematodes (Helicotylenchus spp.), and needle nematodes (Paratylenchus spp.), and 56% of the 102 plantations were infected with root-knot nematodes. Root-knot nemat

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STEPEK, G., A. E. LOWE, D. J. BUTTLE, I. R. DUCE, and J. M. BEHNKE. "Anthelmintic action of plant cysteine proteinases against the rodent stomach nematode,Protospirura muricola,in vitroandin vivo." Parasitology 134, no. 1 (2006): 103–12. http://dx.doi.org/10.1017/s0031182006001302.

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Cysteine proteinases from the fruit and latex of plants, including papaya, pineapple and fig, were previously shown to have a rapid detrimental effect,in vitro, against the rodent gastrointestinal nematodes,Heligmosomoides polygyrus(which is found in the anterior small intestine) andTrichuris muris(which resides in the caecum). Proteinases in the crude latex of papaya also showed anthelmintic efficacy against both nematodesin vivo. In this paper, we describe thein vitroandin vivoeffects of these plant extracts against the rodent nematode,Protospirura muricola, which is found in the stomach. As

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Wu, Wentao. "Marigold (Tagete erecta): An Effective Meloidogyne incognita Trap Plant." International Journal of Agriculture and Biology 25, no. 02 (2021): 271–76. http://dx.doi.org/10.17957/ijab/15.1666.

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Root-knot nematodes (Meloidogyne spp.) are soil-borne pathogens that can cause severe damage to agricultural production. The most common approaches to prevent root-knot nematode infections are based on crop rotation with non-host plants, use of chemical insecticides, biological control methods, and use of nematode-antagonistic or trap plants. Marigolds (Tagetes erecta) are used as nematode-killing plants, but there is controversy over the mechanism through which they control root-knot nematodes. This study confirmed that marigold root-exudates are lethal to root-knot nematodes, illustrated tha

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Karabörklü, Salih, Abdurrahman Ayvaz, Semih Yilmaz, and Ugur Azizoglu. "Fungi associated with free-living soil nematodes in Turkey." Archives of Biological Sciences 67, no. 4 (2015): 1173–83. http://dx.doi.org/10.2298/abs150204093k.

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Free-living soil nematodes have successfully adapted world-wide to nearly all soil types from the highest to the lowest of elevations. In the current study, nematodes were isolated from soil samples and fungi associated with these free-living soil nematodes were determined. Large subunit (LSU) rDNAs of nematode-associated fungi were amplified and sequenced to construct phylogenetic trees. Nematode-associated fungi were observed in six nematode strains belonging to Acrobeloides, Steinernema and Cephalobus genera in different habitats. Malassezia and Cladosporium fungal strains indicated an asso

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Lubis, Khairunnisa, Siwi Indarti, and Nugroho Susetya Putra. "Plant Parasitic Nematode Abundance and Diversity in Potato (Solanum tuberosum) Cultivation at Various Altitudes in Wonosobo and Banjarnegara." Jurnal Perlindungan Tanaman Indonesia 25, no. 2 (2021): 99. http://dx.doi.org/10.22146/jpti.26018.

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Plant-parasitic nematodes are one of the causes of yield loss in potato cultivation. Currently, information on the diversity, abundance, and dominance of potato parasitic nematode genera is not available. This research aimed to determine the pattern of distribution, abundance, and dominance of parasitic nematode genera on potato plant (Solanum tuberosum) in Wonosobo and Banjarnegara Districts at various altitudes i.e.: 1,250--1,500; 1,500--1,750; 1,750--2,000; and 2,000--2,250 meters above sea level (m.a.s.l.). Soil rhizosphere and root samples were collected, and nematodes were extracted usin

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Togashi, Katsumi, and Ichirow Kaihotsu. "Unilateral to bilateral distribution pattern of the pine wood nematode Bursaphelenchus xylophilus within bodies of the insect vector Monochamus alternatus depends on nematode load." Nematology 17, no. 5 (2015): 601–6. http://dx.doi.org/10.1163/15685411-00002894.

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Monochamus alternatusadults carry the pine wood nematodeBursaphelenchus xylophilus. The nematodes are present in the tracheal system of vector beetles. It is known that carrying more than 10 000 nematodes causes drastic reduction in the lifespan and flight activity of beetles. To understand the effects of heavy nematode loads, 41 newly emergedM. alternatusadults were examined for lateral distribution of nematodes within the insect body. The nematodes were distributed unevenly between right and left sides of the beetle body at small nematode loads, whereas they were distributed evenly between t

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Liang, Lian-Ming, Cheng-Gang Zou, Jianping Xu, and Ke-Qin Zhang. "Signal pathways involved in microbe–nematode interactions provide new insights into the biocontrol of plant-parasitic nematodes." Philosophical Transactions of the Royal Society B: Biological Sciences 374, no. 1767 (2019): 20180317. http://dx.doi.org/10.1098/rstb.2018.0317.

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Plant-parasitic nematodes (PPNs) cause severe damage to agricultural crops worldwide. As most chemical nematicides have negative environmental side effects, there is a pressing need for developing efficient biocontrol methods. Nematophagous microbes, the natural enemies of nematodes, are potential biocontrol agents against PPNs. These natural enemies include both bacteria and fungi and they use diverse methods to infect and kill nematodes. For instance, nematode-trapping fungi can sense host signals and produce special trapping devices to capture nematodes, whereas endo-parasitic fungi can kil

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Togashi, Katsumi, and Shota Jikumaru. "Transmission of Bursaphelenchus mucronatus (Nematoda: Aphelenchoididae) through feeding wounds by Monochamus saltuarius (Coleoptera: Cerambycidae)." Nematology 3, no. 4 (2001): 325–33. http://dx.doi.org/10.1163/156854101317020240.

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AbstractThe transmission of Bursaphelenchus mucronatus by its vector beetle, Monochamus saltuarius, was investigated. Fortythree beetles were reared individually under outdoor conditions and characteristics of their complete transmission curves of B. mucronatus were determined. The averaged nematode-transmission curves exhibited by beetles carrying more than 10 000, 1000 to 9999, and 100 to 999 nematodes at their emergence had a peak of 568, 146 and 12 nematodes per 5 days, respectively. The peaks appeared during a period from 20 to 30 days after beetle emergence. Backward stepwise regression

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Haegeman, Annelies, John T. Jones, and Etienne G. J. Danchin. "Horizontal Gene Transfer in Nematodes: A Catalyst for Plant Parasitism?" Molecular Plant-Microbe Interactions® 24, no. 8 (2011): 879–87. http://dx.doi.org/10.1094/mpmi-03-11-0055.

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The origin of plant parasitism within the phylum Nematoda is intriguing. The ability to parasitize plants has originated independently at least three times during nematode evolution and, as more molecular data has emerged, it has become clear that multiple instances of horizontal gene transfer (HGT) from bacteria and fungi have played a crucial role in the nematode's adaptation to this new lifestyle. The first reported HGT cases in plant-parasitic nematodes were genes encoding plant cell wall–degrading enzymes. Other putative examples of HGT were subsequently described, including genes that ma

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Rosenzweig, W. D., D. Premachandran, and D. Pramer. "Role of trap lectins in the specificity of nematode capture by fungi." Canadian Journal of Microbiology 31, no. 8 (1985): 693–95. http://dx.doi.org/10.1139/m85-131.

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Seven adhesive-producing nematode-trapping fungi were tested for their ability to capture nine different nematodes. The nematodes included species that are free living as well as plant and insect parasites. The fungi displayed no selectivity. Each fungus was able to trap and consume all of the different nematodes tested. A study of cuticle surface saccharides of five of the nematodes revealed the presence on all the nematodes of glucose–mannose and N-acetylgalactosamine residues. L-Fucose residues were not found on any of the nematodes. The involvement of lectins in the capture of prey by nema

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Kumari, Supriya, Vijay Kumar, and Nishi Keshari. "COMPARATIVE ANALYSIS OF SOIL AND POTATO NEMATODE POPULATIONS FROM TWO AGRO-ECOLOGICAL ZONES." International Journal of Advanced Research 13, no. 05 (2025): 1084–88. https://doi.org/10.21474/ijar01/20996.

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The present study investigates the diversity and distribution of nematodes associated with potato (Solanum tuberosum) in two important potato-growing regions of Vaishali district, Bihar Mahnar and Lalganj. Both plant-parasitic and free-living nematodes were isolated from rhizospheric soil and root samples collected during the rabi season. The aim was to identify nematode genera present in these regions and assess their ecological and agricultural significance.Nematodes were extracted using Cobbs sieving and decanting method along with the Baermann funnel technique. Morphological identification

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Eleftherianos, Ioannis, and Christa Heryanto. "Transcriptomic Insights into the Insect Immune Response to Nematode Infection." Genes 12, no. 2 (2021): 202. http://dx.doi.org/10.3390/genes12020202.

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Insects in nature interact with a wide variety of microbial enemies including nematodes. These include entomopathogenic nematodes that contain mutualistic bacteria and together are able to infect a broad range of insects in order to complete their life cycle and multiply, filarial nematodes which are vectored by mosquitoes, and other parasitic nematodes. Entomopathogenic nematodes are commonly used in biological control practices and they form excellent research tools for understanding the genetic and functional bases of nematode pathogenicity and insect anti-nematode immunity. In addition, cl

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Khaithong, Tridate, Brent S. Sipes, and Adelheid R. Kuehnle. "(287) Chloroplast Small Subunit Rubisco Protein Is Ingested by Migratory Endoparasitic Nematodes." HortScience 40, no. 4 (2005): 1080D—1080. http://dx.doi.org/10.21273/hortsci.40.4.1080d.

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Lack of a conclusive evidence of ingestion of plastid components by plant-parasitic nematodes cautions the use of plastid transformation technology for nematode resistance. Nematode-resistant effector proteins generally require ingestion by the nematode to be effective. Transgene-encoded proteins produced in plastids are not known to be exported into the cytoplasm. Disintegration of plant cell organelles after nematode feeding suggests that nematodes possibly ingest plastid components. Proof of ingestion will validate the development of plastid transformation for nematode resistance. Small sub

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Bartlett, Cheryl M. "A new hypothesis concerning attachment of parasitic nematodes (Spirurida: Acuarioidea) to the upper alimentary tract of birds." Canadian Journal of Zoology 69, no. 7 (1991): 1829–33. http://dx.doi.org/10.1139/z91-252.

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A gelatinous caplike structure found in vivo around the anterior end of two species of acuarioid nematode parasites (Skrjabinocerca prima Shikhobalova, 1930 and Skrjabinoclava inornatae Wong and Anderson, 1988) is described, termed a "pileus," and suggested as the means by which the nematodes attach to the oesophageal and proventricular mucosa of their bird hosts (Recurvirostra americana and Catoptrophorus semipalmatus inornatus, respectively). Nematodes were embedded in host tissues to the depth of the posteriormost extent of the pileus, which corresponded to the posteriormost extent of the c

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Upadhyay, Devang, Rinu Kooliyottil, Sivanadane Mandjiny, Floyd L. Inman III, and Leonard D. Holmes. "Mass Production of the Beneficial Nematode Steinernema carpocapsae Utilizing a Fed-Batch Culturing Process." International Journal of Phytopathology 2, no. 1 (2013): 52–58. http://dx.doi.org/10.33687/phytopath.002.01.0076.

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The present study deals with the batch and fed-batch mass production of Steinernema carpocapsae. S. carpocapsae is an entomoparasitic nematode that is used as a biological control agent of soil-borne crop insect pests. The ability and efficiency of fed-batch culture process was successful through the utilization of the nematode’s bacterial symbiont Xenorhabdus nematophila. Results from the fed-batch process were compared to those obtain from the standard batch process. The fed-batch process successively improved the mass production process of S. carpocapsae employing liquid medium technology.

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Hussein, Hany, Manal Adel, and Ivan Gelbič. "Effectiveness of the entomopathogenic nematode Steinernema feltiae in agar gel formulations against larvae of the Colarado potato beetle, Leptinotarsa decemlineata (Say.) (Coleoptera: Chrysomelidae)." Open Life Sciences 7, no. 1 (2012): 77–82. http://dx.doi.org/10.2478/s11535-011-0090-0.

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AbstractThe entomopathogenic nematode Steinernema feltiae strain Ustinov Russia was used on potato foliage to control larvae of the Colorado potato beetle, Leptinotarsa decemlineata (Say.) (Coleoptera: Chrysomelidae). Nematodes were applied in formulations of agar at 4%, 2%, 1% and 0.5% concentrations and compared to a control application of nematodes in water for nematode survival. Agar formulation significantly improved efficacy by increasing nematode survival through reduction in desiccation when compared to water-based formulation. More than 70% of infective juvenile nematodes (IJs) died a

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Schroeder, Jill, Stephen H. Thomas, and Leigh W. Murray. "Yellow (Cyperus esculentus) and purple nutsedge (Cyperus rotundus) are not injured by increasing root-knot nematode (Meloidogyne incognita) population density." Weed Science 47, no. 2 (1999): 201–7. http://dx.doi.org/10.1017/s0043174500091621.

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Greenhouse studies in 1995 and 1996 examined the response of yellow and purple nutsedge to inoculation with increasing densities of southern root-knot nematodes. Yellow and purple nutsedge root and shoot weight, numbers of leaves and tubers produced, and tuber weight were unaffected across 17 nematode inoculum densities that ranged from 0 to 20,000 eggs per 15-cm pot, four times the maximum nematode density recorded under field conditions in New Mexico. Hence, yellow and purple nutsedge do not exhibit a classic threshold response to root-knot nematodes. Moreover, the results suggest that the r

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Mokrini, Fouad, Salah-Eddine Laasli, Youssef Karra, Aicha El Aissami, and Abdelfattah A. Dababat. "Diversity and incidence of plant-parasitic nematodes associated with saffron (Crocus sativus L.) in Morocco and their relationship with soil physicochemical properties." Nematology 22, no. 1 (2019): 87–102. http://dx.doi.org/10.1163/15685411-00003286.

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Summary Saffron (Crocus sativus) fields in Morocco’s Taliouine and Taznakht regions were surveyed between January and April 2018 to study the diversity and incidence of plant-parasitic nematodes and assess the effects of soil physicochemical properties on the nematodes. Fourteen nematode genera were identified in soil and root samples collected from 66 saffron fields. The most common plant-parasitic nematodes in the Taliouine region were Pratylenchus spp. and Helicotylenchus spp. In the Taznakht region, the most common nematodes were Pratylenchus spp., Tylenchorhynchus spp. and Ditylenchus dip

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Hauri, Kayleigh C., and Zsofia Szendrei. "A Meta-analysis of Interactions Between Insect Herbivores and Plant-Parasitic Nematodes." Environmental Entomology 51, no. 1 (2021): 1–10. http://dx.doi.org/10.1093/ee/nvab131.

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Abstract Insect herbivores and plant-parasitic nematodes are global, economically devastating pests that are present in nearly every crop and natural system worldwide. Although they may be spatially separated, they indirectly interact with each other by altering both plant chemical defense and nutrition. However, the outcome of these interactions is highly variable across different focal species. We performed a meta-analysis to determine how plant and nematode traits influence insect herbivore growth and reproduction, as well as nematode abundance and reproduction. We investigated how interact

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Hallmann, Johannes, and Björn Niere. "Efficacy of sedimentation basins of a nematology laboratory in retaining plant-parasitic nematodes." Nematology 16, no. 1 (2014): 9–18. http://dx.doi.org/10.1163/15685411-00002739.

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Laboratories working with regulated plant-parasitic nematodes need to ensure that those nematodes are contained within the quarantine facility. Solid or liquid waste produced during the nematode extraction process has to be deposited in such a way that there is no risk of nematodes spreading. Autoclaving works well for solid waste but uses substantial amounts of energy and thus is often considered too expensive for the enormous amount of wastewater accumulating during nematode extraction. Therefore, there is considerable interest in using less energy-consuming alternatives, such as sedimentati

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DEWI, KARTIKA, and ENDANG PURWANINGSIH. "A checklist of nematode parasites from Indonesian murids." Zootaxa 3608, no. 7 (2013): 531–46. http://dx.doi.org/10.11646/zootaxa.3608.7.1.

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A checklist of nematode parasites from Indonesian murids with their geographic distribution is presented. This checklist is compiled from three sources: the catalogue of nematode parasites of Museum Zoologicum Bogoriense (unpublished specimens in the collection), data from our previous research and articles on nematodes of Indonesian murids. This checklist is presented as a list of nematode parasites with host information, and a host list with information on their nematodes. This paper reports 38 nominal species of nematodes and 13 species identified to the generic level only. The nematodes re

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Hu, Yani, Jiahao Shi, Fangfang Qiang, Changhai Liu, and Ning Ai. "Characteristics of Soil Nematode Communities in Pure Populus hopeiensis Forests in the Loess Hilly Region and Their Responses to Precipitation." Agronomy 15, no. 6 (2025): 1341. https://doi.org/10.3390/agronomy15061341.

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To clarify the response mechanisms of soil nematodes as bioindicators of ecosystem health to precipitation variations in loess hilly forests, this study investigated soil nematodes in pure Populus hopeiensis forests across different precipitation gradients in Wuqi County. Through soil physicochemical analysis and high-throughput sequencing of soil nematodes, we analyzed the characteristics of soil nematode communities and their responses to precipitation variation. The results demonstrated the following: (1) Dominant genera and trophic groups of soil nematodes were significantly influenced by

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Garcia, Orlando, Dana Garibaldi, Krissa Jhaveri, Jake Lanoue, and Pushpa Soti. "Soil Nematode Trophic Group Composition and Influence on Growth of Amaranthus palmeri and Parthenium hysterophorus." Journal of Agricultural Science 14, no. 11 (2022): 19. http://dx.doi.org/10.5539/jas.v14n11p19.

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Weeds have a significant impact on agricultural systems. They not only cause a loss in crop yield by competing with them for resources, but they can also serve hosts for several pests and parasties such as plant parasitic nematodes casusing additional crop loss. The aim of this study was to analyze plant-nematode feedback in two major weeds, Amaranthus palmeri S Watson and Parthenium hysterophorus L. First, a field survey was conducted to determine the rhizosphere nematode trophic groups associated with these two plants in the summer of 2020 and 2021. Then a 6-week greenhouse study was conduct

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McLeish, L. J., G. N. Berg, J. M. Hinch, L. V. Nambiar, and M. R. Norton. "Plant parasitic nematodes in white clover and soil from white clover pastures in Australia." Australian Journal of Experimental Agriculture 37, no. 1 (1997): 75. http://dx.doi.org/10.1071/ea96046.

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Summary. Seventeen sites, including locations in all the major white clover growing regions of Australia, were surveyed for the presence of plant parasitic nematodes in autumn and spring 1993. Trifolium repens L. cvv. Haifa and Irrigation, plus 1 other cultivar, were sampled at each site and nematodes extracted from roots, stems and soil. Thirteen genera of plant parasitic nematodes were detected. The clover cyst nematode, Heterodera trifolii, and root knot nematodes, Meloidogyne spp., were each recorded at over 75% of the sites. The most common genera of plant parasitic nematodes detected wer

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Edwards, M. "Resistance and tolerance of grapevine rootstocks to plant parasitic nematodes in vineyards in north-east Victoria." Australian Journal of Experimental Agriculture 29, no. 1 (1989): 129. http://dx.doi.org/10.1071/ea9890129.

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Three grapevine rootstock trials in North-East Victoria, Australia, were sampled over several summers to determine nematode populations and the resistance or the tolerance of some commonly used winegrape varieties and rootstocks to plant parasitic nematodes. Rootstocks on which nematodes failed to reproduce or reproduced poorly were considered resistant, rootstocks which supported high populations of nematodes with no apparent effect on yield were considered tolerant. Susceptible rootstocks supported high numbers of nematodes and yielded poorly. The varieties studied were: Shiraz, Chardonnay,

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Nabilah, Nabilah, I. Gede Swibawa, Radix Suharjo, and Yuyun Fitriana. "DIVERSITY AND ABUNDANCE OF NEMATODES IN GUAVA (Psidium guajava L.) CULTIVATION IN LAMPUNG." JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA 21, no. 2 (2021): 134–43. http://dx.doi.org/10.23960/jhptt.221134-143.

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Diversity and abundance of nematodes in guava (Psidium guajava L.) cultivation in Lampung. Crystal guava agroecosystem is inhabited by many species of plant parasitic nematodes. However, information regarding this topic was still limited. This study aimed to understand the species dominancy of nematodes in crystal guava cultivation in Lampung. Sampling was carried out in three locations of guava crystal plantations: Lampung Timur, Lampung Tengah, and Tanggamus. The laboratory analysis was done at the Plant Pest Science Laboratory and Agricultural Biotechnology Laboratory, Universitas Lampung.

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Potter, J. W., and A. W. McKeown. "Nematode biodiversity in Canadian agricultural soils." Canadian Journal of Soil Science 83, Special Issue (2003): 289–302. http://dx.doi.org/10.4141/s01-064.

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The biodiversity of soil-inhabiting nematodes in Canada is incompletely known, as large areas of Canada’s landmass have not been surveyed for nematode fauna. Nematodes considered as indigenous are generally well adapted to a variety of ecological niches and climatic zones. Much of the available information is based on agricultural ecosystems and agricultural species, and thus is biased toward conditions in disturbed ecosystems and away from “primeval” ecology. Introduced nematode species are frequently quite pathogenic, even to exotic host plants from the same geographic point of origin. Estim

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Rahman, Mati Ur, Peng Chen, Xiuyu Zhang, and Ben Fan. "Predacious Strategies of Nematophagous Fungi as Bio-Control Agents." Agronomy 13, no. 11 (2023): 2685. http://dx.doi.org/10.3390/agronomy13112685.

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Plant-parasitic nematodes significantly threaten agriculture and forestry, causing various diseases. They cause annual losses of up to 178 billion dollars worldwide due to their parasitism. Nematophagous fungi (NF) are valuable in controlling or reducing parasitic nematode diseases by killing nematodes through predatory behavior. This article summarizes the strategic approaches adopted by NF to capture, poison, or consume nematodes for food. NF are classified based on their attacking strategies, including nematode trapping, endoparasitism, toxin production, and egg and female parasitism. Moreo

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Kawanobe, Masanori, Soh Sugihara, Naoko Miyamaru, et al. "Distribution of Root-Lesion and Stunt Nematodes, and Their Relationship with Soil Properties and Nematode Fauna in Sugarcane Fields in Okinawa, Japan." Agronomy 10, no. 6 (2020): 762. http://dx.doi.org/10.3390/agronomy10060762.

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Sugarcane cultivation in Japan has not yet focused on suppressing plant-parasitic nematodes. For proper nematode management, it is essential to know the spatial distribution of economically important plant-parasitic nematodes and free-living nematodes that play important roles in terrestrial ecosystems. We aimed to reveal nematode fauna and soil properties in 85 sugarcane fields of three major sugarcane producing islands in Japan, and to examine their relationship by using the mixed-effect model and by visualizing the spatial distributions using the inverse distance weighting (IDW) approach. T

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Diakhate, Sidy, Florence Khady Ngom, and Saïdou Nourou Sall. "Controlling plant-parasitic nematodes in sandy soil in the Senegal River Valley using composts based on potentially nematicidal plants." Journal of Applied Biosciences 145 (January 31, 2020): 14892–901. http://dx.doi.org/10.35759/jabs.145.5.

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Objective: This study in the Senegal River Basin evaluated the effect of three types of compost, made from manure combined with straw, Calotropis procera (Sodom Apple) or Crotalaria juncea (Indian Hemp) , on plant-parasitic as well as free-living nematodes and on the growth of tomato plants. Methodology and results: This study was performed in a greenhouse where a Mongal tomato was grown during 3 months in a soil that had been abandoned due to infestation by nematodes. The treatments were composts of straw, Calotropis procera Crotalaria juncea and control without compost. The soils amended wit

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Ekine, Emmanuel Green, and Chinonye Oluchi Ezenwaka. "Phyto-parasitic nematodes of bell pepper plant and farm soil in Abua, Rivers State, Nigeria." Science World Journal 19, no. 1 (2024): 275–78. http://dx.doi.org/10.4314/swj.v19i1.38.

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Bell pepper farming significantly contributes to economic development in Abua. However, phyto-parasitic nematodes are endemic in the area and affect quality of crop yield. Hence, this study was undertaken to investigate the dynamics of occurrence of nematodes in bell pepper roots and soil samples of the farms in Abua. Roots and soil from the root rhizosphere were simultaneously collected at 0-20 cm depth using an improvised soil auger and knife. Modified sieve plate technique was employed for nematode detection and a pictorial key was used for nematode identification at the genera level. An ov

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Tanney, Joey B., and Leonard J. Hutchison. "Encapsulation and immobilization of a mycophagous nematode by two Sphaerobolus species." Botany 89, no. 11 (2011): 745–51. http://dx.doi.org/10.1139/b11-060.

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A defence mechanism against nematodes produced by Sphaerobolus stellatus Tode and Sphaerobolus iowensis L.B. Walker is described for the first time. Within 24 h of introduction, some individuals of a mycophagous nematode ( Aphelenchoides sp.) exhibited lethargic behaviour marked by the cessation of feeding and a reduction in movement. The anterior portion of the affected nematodes appeared swollen and was encapsulated with an amorphous material of unknown composition. The nematode stylet could not penetrate this encapsulating matrix, preventing further hyphal grazing and subsequently leading t

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Lesta, Lesta, Riski Meliya Ningsih, Badriyah Badriyah, and Nita Anggi Felisha. "Diversity and Population of Non-Parasitic Nematodes in Various Accessions of Pepper (Piper nigrum L.) Bangka Island." Media Pertanian 10, no. 1 (2025): 39–45. https://doi.org/10.37058/mp.v10i1.14892.

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Nematodes are soil organisms that play an essential role in agricultural ecosystems, both as plant pathogens and soil health indicators. Non-parasitic nematodes or free-living nematodes play an essential role in soil food webs. This study aims to analyze the diversity and population of non-parasitic nematodes in Piper nigrum L. from various pepper accessions on Bangka Island. soil samples taken from seven locations and extracting nematodes using centrifugation flotation techniques. Nematodes were identified based on morphological characteristics by using a stereo and binocular microscopes and

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Lambert, Kris N., Keith D. Allen, and Ian M. Sussex. "Cloning and Characterization of an Esophageal-Gland-Specific Chorismate Mutase from the Phytoparasitic Nematode Meloidogyne javanica." Molecular Plant-Microbe Interactions® 12, no. 4 (1999): 328–36. http://dx.doi.org/10.1094/mpmi.1999.12.4.328.

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Root-knot nematodes are obligate plant parasites that alter plant cell growth and development by inducing the formation of giant feeder cells. It is thought that nematodes inject secretions from their esophageal glands into plant cells while feeding, and that these secretions cause giant cell formation. To elucidate the mechanisms underlying the formation of giant cells, a strategy was developed to clone esophageal gland genes from the root-knot nematode Meloidogyne javanica. One clone, shown to be expressed in the nematode's esophageal gland, codes for a potentially secreted chorismate mutase

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Deepak, Kumar, Kamboj Rubal, and Kumar Vinod. "Role of Predatory Nematodes in Bio-Management of Plant Parasitic Nematodes." Science World a monthly e magazine 2, no. 2 (2022): 153–59. https://doi.org/10.5281/zenodo.6109570.

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Plant-parasitic nematodes are prey for predatory nematodes, which feed on soil microbes. Because of their persistent connection with plant-parasitic nematodes in the rhizosphere, they lower populations of plant-parasitic nematodes in practically all soils, and they also release nutrients in plant-available forms, which may help plants better bear nematode burden on their roots. The predation of plant nematodes by nematodes of the orders Mononchida, Diplogasterida, Dorylaimida, and Aphelenchida has been examined. However, the evidence available in field/natural circumstances is insufficient to

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Varodi, E. I., A. M. Malega, Y. I. Kuzmin, and V. V. Kornyushin. "Helminths of Wild Predatory Mammals of Ukraine. Nematodes." Vestnik Zoologii 51, no. 3 (2017): 187–202. http://dx.doi.org/10.1515/vzoo-2017-0026.

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Abstract The article summarizes information on the nematodes parasitic in wild Carnivora of Ukraine. Totally, 50 species of nematodes are known to parasitise carnivorans in the country, 30 species were registered in the present study. Nematodes were found in 14 species of examined hosts from the families Canidae, Mustelidae and Felidae. Maximum diversity of nematodes of carnivorans was observed in Polissia (forest zone in the north of the country) and in Kherson Region in the south. Hosts from the family Canidae harboured 19 nematode species; studied species of the Mustelidae were infected wit

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Prasad, N., and R. Kant. "Dynamics of plant parasitic and free living nematode populations in sugarcane Saccharum officinarum in Fiji." New Zealand Plant Protection 70 (July 31, 2017): 321. http://dx.doi.org/10.30843/nzpp.2017.70.85.

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   Parasitic nematodes are one of the main constraints in the production of sugarcane, Saccharum officinarum, in Fiji and other sugarcane-growing countries. Both plant parasitic and free-living nematodes are associated with roots of the plant, and the level of infestation affects both soil health and cane yield. This study examined the dynamics of plant parasitic and free-living nematode populations in sugarcane crops in Drasa Estate, Lautoka, Fiji. Soil samples to quantify nematode populations were collected ve times during the crop cycle. There was an exponential increase i

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