Journal of nematology最新文献_第5页

Group Movement in Entomopathogenic Nematodes: Aggregation Levels Vary Based on Context. 昆虫病原线虫的群体运动：聚集水平因环境而异

IF 1.4 4区生物学

Journal of nematology Pub Date : 2024-03-14 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0002

Glen Stevens, Muhammad Usman, Sehrish Gulzar, Cassandra Stevens, Eleanor Pimentel, Hilal Erdogan, Paul Schliekelman, Fatma Kaplan, Hans Alborn, Waqas Wakil, David Shapiro-Ilan, Edwin E Lewis

{"title":"Group Movement in Entomopathogenic Nematodes: Aggregation Levels Vary Based on Context.","authors":"Glen Stevens, Muhammad Usman, Sehrish Gulzar, Cassandra Stevens, Eleanor Pimentel, Hilal Erdogan, Paul Schliekelman, Fatma Kaplan, Hans Alborn, Waqas Wakil, David Shapiro-Ilan, Edwin E Lewis","doi":"10.2478/jofnem-2024-0002","DOIUrl":"10.2478/jofnem-2024-0002","url":null,"abstract":"Maintenance of an aggregated population structure implies within-species communication. In mixed-species environments, species-specific aggregations may reduce interspecific competition and promote coexistence. We studied whether movement and aggregation behavior of three entomopathogenic nematode species changed when isolated, as compared to mixed-species arenas. Movement and aggregation of Steinernema carpocapsae, S. feltiae and S. glaseri were assessed in sand. Each species demonstrated significant aggregation when alone. Mixed-species trials involved adding two species of nematodes, either combined in the center of the arena or at separate corners. While individual species became less aggregated than in single-species conditions when co-applied in the same location, they became more aggregated when applied in separate corners. This increased aggregation in separate-corner trials occurred even though the nematodes moved just as far when mixed together as they did when alone. These findings suggest that maintenance of multiple species within the same habitat is driven, at least in part, by species-specific signals that promote conspecific aggregation, and when the species are mixed (as occurs in some commercial formulations involving multiple EPN species), these signaling mechanisms are muddled.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240002"},"PeriodicalIF":1.4,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10940270/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of Meloidogyne hapla on hemp (Cannabis sativa) in Oregon. 俄勒冈州首次报告大麻（Cannabis sativa）上的 Meloidogyne hapla。

IF 1.3 4区生物学

Journal of nematology Pub Date : 2024-03-14 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0008

Lester Núñez-Rodríguez, Hannah Rivedal, Amy Peetz, Cynthia M Ocamb, Inga Zasada

引用次数: 0

Host status and susceptibility of Cannabis sativa cultivars to root-knot nematodes. 大麻栽培品种的寄主状况和对根结线虫的易感性。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2024-03-14 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0003

J Coburn, J Desaeger

{"title":"Host status and susceptibility of Cannabis sativa cultivars to root-knot nematodes.","authors":"J Coburn, J Desaeger","doi":"10.2478/jofnem-2024-0003","DOIUrl":"10.2478/jofnem-2024-0003","url":null,"abstract":"Root-knot nematode host status of hemp cultivars of different uses (fiber, dual, CBD/CBG) and from different regions (Europe, China, US) were evaluated in five different greenhouse trials. None of the tested cultivars showed resistance to any of the tested root-knot nematode species, and all tested hemp cultivars were good hosts for root-knot nematodes, especially to mixed populations of M. javanica and M. incognita. Root gall symptoms on hemp were less severe than on cucumber (and tomato), but reproduction rates were similar. Lower infection and reproduction rates were noted for M. hapla and M. enterolobii, which were probably due to the colder temperatures at the time of the trial, as the same effect was noted for the cucumber control plants. While no negative impact on hemp shoot growth was seen in trials where nematodes were added to pasteurized soil, a significant and visible negative effect on hemp growth was noted when two CBG hemp cultivars were planted in heavily naturally root-knot infested soil. This result indicates that hemp is not only a good host to root-knot nematodes, but also that root-knot can be a limiting factor for hemp production in Florida and other places with high abundance and pressure of root-knot nematodes.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240003"},"PeriodicalIF":1.4,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10940272/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Host status of melon, carrot, and Meloidogyne incognita-susceptible and -resistant cotton, cowpea, pepper, and tomato for M. floridensis from California. 加利福尼亚州甜瓜、胡萝卜以及易感和抗感棉花、豇豆、辣椒和番茄的花叶病毒的寄主状况。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2024-03-14 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0004

Antoon T Ploeg, Scott Edwards

{"title":"Host status of melon, carrot, and Meloidogyne incognita-susceptible and -resistant cotton, cowpea, pepper, and tomato for M. floridensis from California.","authors":"Antoon T Ploeg, Scott Edwards","doi":"10.2478/jofnem-2024-0004","DOIUrl":"10.2478/jofnem-2024-0004","url":null,"abstract":"The host status of carrot, melon, and susceptible and resistant cultivars of tomato, cotton, cowpea, and pepper for a California isolate of the peach root-knot nematode Meloidogyne floridensis was determined in greenhouse pot experiments. It was compared to a race 3 isolate of M. incognita. Melon was an excellent host for both isolates and roots were heavily galled after the 8-week trial. Carrot was a host for M. incognita, but a poor host for M. floridensis, although both isolates caused similar levels of galling. Susceptible cotton was a good host for M. incognita race 3, but a poor host for M. floridensis. Susceptible tomato, cowpea, and pepper were good hosts for both isolates. The M. incognita resistance in tomato and pepper was broken by M. floridensis. Resistant cowpea was a maintenance host as population levels of M. floridensis remained virtually unchanged over the trial period. We conclude that M. floridensis poses a risk to some important vegetable crops in California, as it reproduces on most vegetable crops, including some cultivars that are resistant to M. incognita. On susceptible crops, the reproduction of M. floridensis was always significantly less than that of M. incognita, and we hypothesize that in mixed species field populations, M. incognita will outcompete M. floridensis. This study demonstrates that efforts to limit the spread and prevent further introductions of M. floridensis in California are important to maintain the effectiveness of plant resistance as a nematode management strategy in vegetable crops.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240004"},"PeriodicalIF":1.4,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10940276/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140143681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A De Novo Whole Genome Assembly and Annotation of Parelaphostrongylus tenuis. Parelaphostrongylus tenuis 的全新全基因组组装和注释。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2024-03-14 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0009

Tyler J Garwood, Jessie E Richards, Marissa G Macchietto, Richard W Gerhold, Stephen A Kania, John R Garbe, Nicholas M Fountain-Jones, Peter A Larsen, Tiffany M Wolf

引用次数: 0

First report of Pratylenchus penetrans (Nematoda: Pratylenchidae) associated with artichokes in Vietnam. 越南首次报告与朝鲜蓟有关的 Pratylenchus penetrans（线虫纲：Pratylenchidae）。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2024-01-23 eCollection Date: 2023-02-01 DOI: 10.2478/jofnem-2023-0060

Thi Duyen Nguyen, Huu Tien Nguyen, Thi Mai Linh LE, Quang Phap Trinh

{"title":"First report of Pratylenchus penetrans (Nematoda: Pratylenchidae) associated with artichokes in Vietnam.","authors":"Thi Duyen Nguyen, Huu Tien Nguyen, Thi Mai Linh LE, Quang Phap Trinh","doi":"10.2478/jofnem-2023-0060","DOIUrl":"10.2478/jofnem-2023-0060","url":null,"abstract":"Pratylenchus penetrans is one of the world's most common and destructive root-lesion nematodes and can parasitize more than 400 plant species. P. penetrans has been reported to cause serious damage to artichokes in several countries, such as Greece, Brazil, and France. Until now, there have been no reports of P. penetrans associated with artichokes in Vietnam. In this study, we recorded this species in artichoke fields in Lam Dong province, Vietnam with an average density of 50 nematodes/100g of soil (frequency of appearance at 64.7%). This nematode was associated with symptoms such as yellowing leaves, stunt, and root necrosis of artichokes in Vietnam, indicating its high damaging potential and a need for suitable control strategies. The identification of this species in our study was confirmed by morphology, morphometric data, and molecular characterization of 18S and 28S rRNA regions. Our study also provides the first molecular data of P. penetrans in Vietnam. The inclusion of molecular data for P. penetrans in Vietnam represents a significant contribution to the scientific community and a pivotal advancement in addressing nematode-related challenges in agriculture. This dataset serves as an invaluable reference for various molecular-focused endeavors, including but not limited to molecular identification, pathogenicity studies, and the development of effective management strategies.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"55 1","pages":"20230060"},"PeriodicalIF":1.4,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10805579/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139541716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meloidogyne spp. in Eucalypts - Reproduction and Damage to Seedling Growth. 桉树中的 Meloidogyne spp.

IF 1.3 4区生物学

Journal of nematology Pub Date : 2024-01-23 eCollection Date: 2023-02-01 DOI: 10.2478/jofnem-2023-0059

José Olívio Lopes Vieira, Renata Cunha Pereira, Mariana Zandomênico Mangeiro, Ricardo Moreira Souza

{"title":"Meloidogyne spp. in Eucalypts - Reproduction and Damage to Seedling Growth.","authors":"José Olívio Lopes Vieira, Renata Cunha Pereira, Mariana Zandomênico Mangeiro, Ricardo Moreira Souza","doi":"10.2478/jofnem-2023-0059","DOIUrl":"10.2478/jofnem-2023-0059","url":null,"abstract":"Eucalypts are cultivated worldwide, but little is known about their status as hosts of root-knot nematodes (RKN) (Meloidogyne spp.). Moreover, information is scarce regarding the nature of the damage caused by RKN to eucalypt seedlings and trees. To investigate these aspects, we separately inoculated Meloidogyne enterolobii, M. javanica and M. incognita in seedlings of the world's most cultivated eucalypts: Eucalyptus dunni, E. grandis, E. cloeziana, E. camaldulensis, E. saligna, Corymbia citriodora, and the hybrid E. grandis × E. urophylla. After six months of greenhouse cultivation, we assessed nematode reproduction and variables that expressed the seedlings' shoot and root growth. We observed a diverse pattern of host statuses to RKN among the eucalypts, and all three Meloidogyne species reduced (p < 0.05) the root system mass, volume and length of E. grandis, E. saligna and the hybrid E. grandis × E. urophylla. Our results reaffirm previous reports indicating that RKN can delay the growth of seedlings in nurseries, who should thus adopt appropriate sanitary measures to avoid RKN establishment and spread. Moreover, the damage caused by RKN to eucalypts after just six months of cultivation suggests that the growth of eucalypt trees may be affected over the course of several years of cultivation.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"55 1","pages":"20230059"},"PeriodicalIF":1.3,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10805518/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139541631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum to: Morphological and Molecular Characterization of Filenchus multistriatus n. sp. (Tylenchomorpha: Tylenchidae) and Data on a Known Species of the Genus from Bushehr Province, Southern Iran. 勘误：Morphological and Molecular Characterization of Filenchus multistriatus n. sp. (Tylenchomorpha: Tylenchidae) and Data on a Known Species of the Genus from Bushehr Province, Southern Iran.

IF 1.3 4区生物学

Journal of nematology Pub Date : 2023-12-31 eCollection Date: 2023-02-01 DOI: 10.2478/jofnem-2023-0046

Somayeh Monemi, Mohammad Reza Atighi, Joaquín Abolafia, Pablo Castillo, Majid Pedram

引用次数: 0

Meloidogyne enterolobii-induced Changes in Guava Root Exudates Are Associated With Root Rotting Caused by Neocosmospora falciformis. Meloidogyne enterolobii 诱导的番石榴根部渗出物变化与 Neocosmospora falciformis 引起的根腐病有关。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2023-12-31 eCollection Date: 2023-02-01 DOI: 10.2478/jofnem-2023-0055

Ricardo M Souza, Denilson F Oliveira, Vicente M Gomes, Abraão J S Viana, Geraldo H Silva, Alan R T Machado

{"title":"Meloidogyne enterolobii-induced Changes in Guava Root Exudates Are Associated With Root Rotting Caused by Neocosmospora falciformis.","authors":"Ricardo M Souza, Denilson F Oliveira, Vicente M Gomes, Abraão J S Viana, Geraldo H Silva, Alan R T Machado","doi":"10.2478/jofnem-2023-0055","DOIUrl":"10.2478/jofnem-2023-0055","url":null,"abstract":"Despite the worldwide importance of disease complexes involving root-feeding nematodes and soilborne fungi, there have been few in-depth studies on how these organisms interact at the molecular level. Previous studies of guava decline have shown that root exudates from Meloidogyne enterolobii-parasitized guava plants (NP plants), but not from nematode-free plants (NF plants), enable the fungus Neocosmospora falciformis to rot guava roots, leading to plant death. To further characterize this interaction, NP and NF root exudates were lyophilized; extracted with distinct solvents; quantified regarding amino acids, soluble carbohydrates, sucrose, phenols, and alkaloids; and submitted to a bioassay to determine their ability to enable N. falciformis to rot the guava seedlings' roots. NP root exudates were richer than NF root exudates in amino acids, carbohydrates, and sucrose. Only the fractions NP-03 and NP-04 enabled fungal root rotting. NP-03 was then sequentially fractionated through chromatographic silica columns. At each step, the main fractions were reassessed in bioassay. The final fraction that enabled fungal root rotting was submitted to analysis using high performance liquid chromatography, nuclear magnetic resonance, mass spectrometry, energy-dispersive X-ray fluorescence, and computational calculations, leading to the identification of 1,5-dinitrobiuret as the predominant substance. In conclusion, parasitism by M. enterolobii causes an enrichment of guava root exudates that likely favors microorganisms capable of producing 1,5-dinitrobiuret in the rhizosphere. The accumulation of biuret, a known phytotoxic substance, possibly hampers root physiology and the innate immunity of guava to N. falciformis.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"55 1","pages":"20230055"},"PeriodicalIF":1.4,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10805520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139541537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Population dynamics of Meloidogyne graminicola in soil in different types of direct-seeded rice agroecosystems in Hunan Province, China. 中国湖南省不同类型直播稻农业生态系统土壤中褐飞虱的种群动态。

IF 1.4 4区生物学

Journal of nematology Pub Date : 2023-12-31 eCollection Date: 2023-02-01 DOI: 10.2478/jofnem-2023-0040

Zhuhong Yang, Lu Zhang, Xinwen Li, Yufeng Lin, Shan Ye, Zhong Ding

{"title":"Population dynamics of Meloidogyne graminicola in soil in different types of direct-seeded rice agroecosystems in Hunan Province, China.","authors":"Zhuhong Yang, Lu Zhang, Xinwen Li, Yufeng Lin, Shan Ye, Zhong Ding","doi":"10.2478/jofnem-2023-0040","DOIUrl":"10.2478/jofnem-2023-0040","url":null,"abstract":"The rice root-knot nematode Meloidogyne graminicola is increasingly widely distributed in China and has had a severe incidence in Hunan Province. It is thus necessary to investigate its population dynamics in paddy fields. This study was conducted to ascertain the effect of direct-seeded rice agroecosystems on the population dynamics of M. graminicola and root gall development in rice. The results indicated that the population density of M. graminicola in soil was markedly influenced by the agroecosystem, rainfall and temperature. The population density of M. graminicola J2, and eggs in the soil and root galls, were significantly larger in the dry aerobic rice agroecosystem and in the rain-fed upland agroecosystem than in the lowland double-rice cropping sequence agroecosystem. As it can affect soil moisture rainfall was the key factor affecting the density of nematodes in both the rain-fed upland agroecosystem and the dry aerobic rice agroecosystem. Field flooding was still an effective way to reduce the population density of M. graminicola. In addition, we observed that M. graminicola can lay eggs outside rice roots under laboratory conditions. Therefore, we propose a hypothesis that M. graminicola lays egg masses within roots when the soil moisture is high, but lays eggs outside when the soil moisture is suitable. By clarifying the population dynamics of M. graminicola in different types of direct-seeded rice agroecosystems, this study is conducive to controlling rice root-knot nematodes.","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"55 1","pages":"20230040"},"PeriodicalIF":1.4,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10805519/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139541884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0