Journal of nematology最新文献

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Morphological and Molecular Characterization of a Novel Fungal-feeding Stem Nematode Ditylenchoides agaricivorus n. sp. (Tylenchida: Anguinidae) from Intercepted Samples.
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2025-02-27 eCollection Date: 2025-02-01 DOI: 10.2478/jofnem-2025-0003
Che-Chang Liang, Pei-Chen Chen
{"title":"Morphological and Molecular Characterization of a Novel Fungal-feeding Stem Nematode <i>Ditylenchoides agaricivorus</i> n. sp. (Tylenchida: Anguinidae) from Intercepted Samples.","authors":"Che-Chang Liang, Pei-Chen Chen","doi":"10.2478/jofnem-2025-0003","DOIUrl":"https://doi.org/10.2478/jofnem-2025-0003","url":null,"abstract":"<p><p>A new species of the genus <i>Ditylenchoides</i>, <i>D. agaricivorus</i> n. sp., collected from coconut fiber used as growing media for staghorn ferns and intercepted during import quarantine, is described and illustrated herein based on morphological and molecular studies. The new species is characterized by a body length of 728 (612-846) μm and 641 (511-720) μm in female and male, respectively, delicate stylet 8.0 (7.4-8.4) μm long, six lines in the lateral field, median bulb of esophagus well-developed, muscular with crescentic valve, post-vulval uterine sac well-developed, 36 (22-52) μm long, female tail elongate-conoid with finely rounded terminus. The results of phylogenetic analyses based on sequences of the D2D3 expansion region of 28S rRNA and ITS confirmed the close molecular relationship between <i>D. agaricivorus</i> n. sp., and other <i>Ditylenchoides</i> species such as <i>D. africanus</i>, <i>D. arachis</i>, <i>D. destructor</i>, <i>D. halictus</i>, <i>D. myceliophagus</i> and <i>D. persicus</i>. <i>Ditylenchoides agaricivorus</i> n. sp. was successfully reared on the <i>Rhizoctonia solani</i> and <i>Agaricus biporus</i>. However, <i>D. agaricvorus</i> n. sp. did not reproduce when culturing on <i>Lentinula edodes</i>, <i>Pleurotus erungii</i>, <i>Volcariella volvacea</i>, <i>A. bitorquis</i>, nor on callused carrot disks, and alfalfa seedlings.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"57 1","pages":"20250001"},"PeriodicalIF":1.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11868796/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143542366","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 finding of Bursaphelenchus xylophilus in pine plantations of the Republic of Armenia.
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2025-02-21 eCollection Date: 2025-02-01 DOI: 10.2478/jofnem-2025-0004
E N Arbuzova, G H Karagyan, N I Kozyreva, A G Shchukovskaya, T L Ghrejyan, M Yu Kalashian, K V Akopyan
{"title":"First finding of <i>Bursaphelenchus xylophilus</i> in pine plantations of the Republic of Armenia.","authors":"E N Arbuzova, G H Karagyan, N I Kozyreva, A G Shchukovskaya, T L Ghrejyan, M Yu Kalashian, K V Akopyan","doi":"10.2478/jofnem-2025-0004","DOIUrl":"10.2478/jofnem-2025-0004","url":null,"abstract":"<p><p>In 2022-2023, a survey of drying coniferous plantations in 5 regions of the Republic of Armenia was conducted. Investigations were carried out in plantations of Scots pine <i>Pinus sylvestris</i> L. and Crimean pine <i>Pinus nigra</i> subsp. <i>pallasiana</i> (Lamb.) Holmboe. A total of 125 wood samples were collected and analyzed. For the first time in the territory of the Republic of Armenia, single individuals of pinewood nematode <i>Bursaphelenchus xylophilus</i> (Steiner and Buhrer 1934) Nickle 1981 were found near Hankavan village (Kotayk Province). The nematodes were found in samples from several trees with signs of browning needles. Identification by morphological features corresponded to the description of nematodes of the genus <i>Bursaphelenchus</i> Fuchs, 1937 of <i>xylophilus</i> group. The results of molecular genetic analysis of a fragment of the <i>mitochondrial</i> cytochrome oxidase I (mtCOI) gene showed 100% compliance with the species <i>B. xylophilus</i>. The phylogenetic analysis showed that the identified nematodes are grouped into one cluster with isolates from China, Korea, Portugal, and Japan. It is necessary to thoroughly examine pine plantations on the territory of Armenia to accurately determine the size of the outbreak of this quarantine species.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"57 1","pages":"20250004"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11845123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143483345","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
Evaluation of two free-living, and one entomopathogenic nematode species (Rhabditida) for controlling Bactrocera zonata (Diptera: Tephritidae) in Iraq.
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2025-02-15 eCollection Date: 2025-02-01 DOI: 10.2478/jofnem-2025-0001
Saif Abdulhussein Alghanimi, Ali Asghar Talebi, Reihaneh Gholami Ghavamabad, Majid Pedram
{"title":"Evaluation of two free-living, and one entomopathogenic nematode species (Rhabditida) for controlling <i>Bactrocera zonata</i> (Diptera: Tephritidae) in Iraq.","authors":"Saif Abdulhussein Alghanimi, Ali Asghar Talebi, Reihaneh Gholami Ghavamabad, Majid Pedram","doi":"10.2478/jofnem-2025-0001","DOIUrl":"https://doi.org/10.2478/jofnem-2025-0001","url":null,"abstract":"<p><p>Fruit flies (Diptera: Tephritidae) are among the most serious agricultural pests globally, causing significant economic losses in fruit production and posing major quarantine concerns for many countries. <i>Bactrocera zonata</i>, one of the most harmful species in the family Tephritidae, has recently established in Iraq. Entomopathogenic nematodes (EPNs) and potential EPNs can be used as vital tools in integrated pest management (IPM) programs for both organic and conventional production systems. In our study, three species - two native and free-living, and the other, a native EPN - were isolated from various orchards in Iraq. Their pathogenicity was evaluated in laboratory and greenhouse experiments against the soil-dwelling third-instar larvae of <i>B. zonata</i>. In laboratory bioassays, mortality rates varied from 70-98% for <i>Oscheius myriophilus</i>, 12-58% for <i>Acrobeloides saeedi</i>, and 14-56% for <i>Heterorhabditis bacteriophora</i> 12 days post-treatment. The mean lethal concentration (LC<sub>50</sub>) values, measured by infective juveniles (IJs)/larva, were 7.08 for <i>O. myriophilus</i>, 104.49 for <i>A. saeedi</i>, and 97.74 for <i>H. bacteriophora</i> in data set 1. They were 13.50, 86.04, and 86.67 IJs/larva, respectively, in data set 2. These values were determined for third-instar larvae in laboratory tests conducted 12 days post-treatment at 25°C and 60% relative humidity (RH). Under greenhouse conditions, applications of <i>O. myriophilus</i>, <i>H. bacteriophora</i>, and <i>A. saeedi</i> resulted in 50.00-91.75% mortality in fruit tests at a concentration of 250 IJs/larva, and 33.58-67.82% mortality in soil tests against <i>B. zonata</i>, at a concentration of 1,000 IJs/larva 19 days after treatment. Our results suggest that two presently studied free-living native nematodes are potential EPNs, and together with native isolate of <i>Heterorhabditis bacteriophora</i>, could be integrated into pest management programs against <i>B. zonata</i> in Iraqi orchards.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"57 1","pages":"20250001"},"PeriodicalIF":1.4,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11829747/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441242","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
Identification, distribution, and hosts of Meloidogyne spp. infecting horticultural crops in Florida, USA with focus on Meloidogyne enterolobii.
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2025-01-24 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0042
Gabrieli Riva, Janete A Brito, Clemen de Oliveira, Marcus Marin, Mengyi Gu, Hung Xuan Bui, Johan Desaeger
{"title":"Identification, distribution, and hosts of <i>Meloidogyne</i> spp. infecting horticultural crops in Florida, USA with focus on <i>Meloidogyne enterolobii</i>.","authors":"Gabrieli Riva, Janete A Brito, Clemen de Oliveira, Marcus Marin, Mengyi Gu, Hung Xuan Bui, Johan Desaeger","doi":"10.2478/jofnem-2024-0042","DOIUrl":"10.2478/jofnem-2024-0042","url":null,"abstract":"<p><p>Many root-knot nematode (RKN) species in the genus <i>Meloidogyne</i> occur in Florida, including <i>M. enterolobii</i>, a species able to overcome RKN resistance genes in many crops. The distribution of these nematodes in horticultural crops is not well known. A RKN survey was conducted in South and Central Florida aiming to: (i) identify RKN infecting vegetables, fruit, and other crops; (ii) document host plants; (iii) determine RKN distribution; and (iv) gain insight on the relatedness of <i>M. enterolobii</i> obtained in this study with other populations from the USA and other countries. A total of 304 soil and root samples were collected from 56 plant species cultivated in commercial vegetable and fruit farms, research farms, horticultural gardens, Asian vegetable farms, and natural landscapes in 12 counties. <i>Meloidogyne</i> species identification was performed using mitochondrial haplotype-based identification, species-specific primers, DNA sequencing and phylogenetic analysis. RKN were detected in 247 out of 304 (81.25%) root samples collected from September 2019 to January 2023. Five RKN species (<i>M. arenaria</i>, <i>M. enterolobii</i>, <i>M. hapla</i>, <i>M. incognita</i> and <i>M. javanica</i>) were identified. The most prevalent RKN were <i>M. incognita</i> and <i>M. enterolobii</i>, which were found in 25% of the samples. Less prevalent were <i>M. javanica</i>, found in 16%, and <i>M. arenaria</i> and <i>M. hapla</i>, found in 8% and 5% of samples, respectively. Mixed populations of <i>M. enterolobii</i> and <i>M. incognita</i> were found in 1% of the samples. Phylogenetic analysis showed low genetic variability among DNA sequences of <i>M. enterolobii</i> populations from Florida, other states in the USA, and other countries. New host records found in this study include: a worldwide host record, <i>Solanum capsicoides</i> (<i>M. enterolobii</i>); new US continental host records, <i>Vigna unguiculata</i> (<i>M. enterolobii</i>), <i>Opuntia cochenillifera</i> (mixed species - <i>M. enterolobii</i> and <i>M. incognita</i>). Additionally, new state host records found were <i>Cannabis sativa</i>, <i>Colocasia esculenta</i>, and <i>Lilium</i> sp. (<i>M. arenaria</i>), <i>Phaseolus vulgaris</i> (<i>M. enterolobii</i>), <i>Cucumis melo</i> (<i>M. hapla</i>), and <i>Lavandula angustifolia</i> and <i>Helianthus annuus</i> (<i>M. incognita</i>). These findings confirm the predominance of tropical RKN species, and especially of <i>M. enterolobii</i>, in Florida. and provide new insights into the distribution, prevalence, and hosts of RKN species in horticultural crops in Central and South Florida.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240042"},"PeriodicalIF":1.4,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11770197/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052695","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
Opinions and Suggestions on Nematode Faunal Analysis. 对线虫区系分析的意见与建议。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-12-24 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0049
Howard Ferris, Ingrid Varela Benavides
{"title":"Opinions and Suggestions on Nematode Faunal Analysis.","authors":"Howard Ferris, Ingrid Varela Benavides","doi":"10.2478/jofnem-2024-0049","DOIUrl":"10.2478/jofnem-2024-0049","url":null,"abstract":"<p><p>We briefly review the history and development of recognizing nematode assemblages as indicators of environmental conditions. We highlight the effects of spatio-temporal successional changes in nematode assemblages on the auto-regeneration of ecosystem functions after disturbance. We expand on the need for herbivory components in the analysis of soil nematode assemblages in recognition of the important impact of plant parasitism on the resources and productivity of the soil system. Finally, we point out some important areas of research that would enhance the process and value of nematode faunal analysis. We include an evaluation of the current potential for molecular assessment of nematode abundance and function and for the application of artificial intelligence in automated nematode identification.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240049"},"PeriodicalIF":1.4,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11668516/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885873","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
Genetic diversity of the recovered populations of Mesocriconema xenoplax (Nematoda: Criconematidae) from orchards in Fars province, Southern Iran. 伊朗南部法尔斯省果园异斑中线虫恢复种群的遗传多样性。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-12-24 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0048
Ali Asghar Dehghan, Reza Ghaderi, Akbar Karegar, Abbas Mokaram Hesar
{"title":"Genetic diversity of the recovered populations of <i>Mesocriconema xenoplax</i> (Nematoda: Criconematidae) from orchards in Fars province, Southern Iran.","authors":"Ali Asghar Dehghan, Reza Ghaderi, Akbar Karegar, Abbas Mokaram Hesar","doi":"10.2478/jofnem-2024-0048","DOIUrl":"10.2478/jofnem-2024-0048","url":null,"abstract":"<p><p>In this survey, 14 populations of <i>Mesocriconema xenoplax</i> were collected from the rhizosphere of eight fruit and nut trees in Fars province, Southern Iran. The phylogenetic relationships of these populations with other representatives of the species were investigated using sequences of cytochrome c oxidase subunit 1 mitochondrial gene (<i>COI</i>) and D2-D3 expansion fragments of 28S rDNA. Phylogenetic studies indicated a close relationship of the currently sequenced populations with known haplotype groups (HG) in the <i>COI</i> tree and revealed two separate lineages in the 28S rDNA tree. Moreover, the genetic diversity of the populations was analyzed using seven ISSR primers as molecular markers. The estimated genetic diversity among populations regarding associated trees and geographic regions were low values of 3.3% and 5.9%, respectively, indicating high gene flow among the recovered nematode populations. On the other hand, the estimated fixation index (F<sub>ST</sub>) was higher for associated plants than for geographic regions (0.611 <i>vs</i> 0.504) indicating that plant-based population segregation better explains genetic diversity in this species. This work expands our knowledge of the genetic structure of this cosmopolitan species of plant-parasitic nematodes.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240048"},"PeriodicalIF":1.4,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11668531/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885932","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
Morphological Characterization and Assessment of Genetic Variability of Tylenchulus semipenetrans Populations from Southern Iran. 伊朗南部 Tylenchulus semipenetrans 种群的形态特征和遗传变异评估。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-12-15 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0047
Mohammad Rumiani, Miloslav Zouhar, Akbar Karegar, Habiballah Hamzehzarghani, Ahmad Tahmasebi, Milad Rashidifard
{"title":"Morphological Characterization and Assessment of Genetic Variability of <i>Tylenchulus semipenetrans</i> Populations from Southern Iran.","authors":"Mohammad Rumiani, Miloslav Zouhar, Akbar Karegar, Habiballah Hamzehzarghani, Ahmad Tahmasebi, Milad Rashidifard","doi":"10.2478/jofnem-2024-0047","DOIUrl":"10.2478/jofnem-2024-0047","url":null,"abstract":"<p><p>Molecular data should be combined with morphological data to enhance the reliability of phylogenetic and diagnostic studies on nematodes. In this study, the citrus nematode <i>Tylenchulus semipenetrans</i> collected from citrus orchards in different localities in Fars province, southern Iran, was characterized using the partial sequencing of ITS rDNA, D2-D3 of 28S rDNA and COI mtDNA genes. We also morphometrically characterized the second-stage juveniles (J2) and male specimens. The results showed that <i>T. semipenetrans</i> is a genetically homogeneous species, and only minor nucleotide differences were detected among the populations. Phylogenetic studies demonstrated that most Iranian populations were grouped together, and there were no differences among the populations. However, sequence alignment of ITS, D2-D3 of 28S rDNA and COI mtDNA revealed 17, 24, and 16 single nucleotide variations (SNVs) and 11, 12, and 11 single-nucleotide polymorphisms (SNPs), respectively. The results of the morphometric analysis showed slight morphometric differences among and within the populations of <i>T. semipenetrans</i>. The morphometric differences among citrus nematode populations and the haplotype topology of the populations did not correlate with their geographical origin and host type. The constructed phylogenetic trees showed a close relationship between <i>Tylenchulus</i> and <i>Trophotylenchulus</i>. In addition, the phylogenetic relationships showed that <i>T. musicola</i> is the closest taxon to <i>T. semipenetrans.</i> The results of this study provide a better understanding of the diversity of <i>T. semipenetrans</i> populations and may shed light on the genetic variation of citrus nematode.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240047"},"PeriodicalIF":1.4,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11658578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864566","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 Hemicriconemoides kanayaensis (Nematoda: Criconematidae) on Tea Plantations in Iran. 伊朗茶园中 Hemicriconemoides kanayaensis(线虫纲:Criconematidae)的首次报告。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-12-15 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0044
Negin Mirghasemi, Elena Fanelli, Alessio Vovlas, Alberto Troccoli, Salar Jamali, Francesca De Luca
{"title":"First Report of <i>Hemicriconemoides kanayaensis</i> (<i>Nematoda: Criconematidae</i>) on Tea Plantations in Iran.","authors":"Negin Mirghasemi, Elena Fanelli, Alessio Vovlas, Alberto Troccoli, Salar Jamali, Francesca De Luca","doi":"10.2478/jofnem-2024-0044","DOIUrl":"10.2478/jofnem-2024-0044","url":null,"abstract":"<p><p>During a nematode survey in Iran, an abundant population of sheathoid, migratory, root-ectoparasitic nematodes was recovered from a tea, <i>Camellia sinensis</i> (L.), Kuntze plantation for the first time. Morphological and molecular characterization identified the Iranian population as <i>Hemicriconemoides kanayaensis</i>. The morphometrics of <i>H. kanayaensis</i> agreed with the original description. Phylogenetic relationships within <i>Hemicriconemoides</i>-based on ITS region, D2 to D3 expansion regions of the 28S rRNA, and the partial 18S rRNA genes along with the partial mitochondrial COI gene-confirmed the occurrence of <i>H. kanayaensis</i> on the tea plantation in Iran. Principal component analysis (PCA) confirmed the high intraspecific and interspecific variabilities among <i>Hemicriconemoides</i> species and between <i>H. kanayaensis</i> populations.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240044"},"PeriodicalIF":1.4,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11658577/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864559","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 marylandi is Involved in, but not the Primary Cause of Creeping Bentgrass Decline of Putting Greens in Southern California. Meloidogyne marylandi 与南加州果岭匍匐翦股颖衰退有关,但不是主要原因。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-11-23 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0046
A T Ploeg, H Witte, S A Subbotin, I Tandingan De Ley, J Smith Becker, J O Becker
{"title":"<i>Meloidogyne marylandi</i> is Involved in, but not the Primary Cause of Creeping Bentgrass Decline of Putting Greens in Southern California.","authors":"A T Ploeg, H Witte, S A Subbotin, I Tandingan De Ley, J Smith Becker, J O Becker","doi":"10.2478/jofnem-2024-0046","DOIUrl":"10.2478/jofnem-2024-0046","url":null,"abstract":"<p><p>Root-knot nematodes were discovered in severely declining creeping bentgrass putting greens at a golf course in Indian Wells, Riverside County, California. The exhibited disease symptoms included chlorosis, stunted growth, and dieback. Based on morphological examination and measurements of J2 females and males, it was suggested that the causal pathogen was <i>Meloidogyne marylandi</i>. This identification was confirmed by analysis of the D2-D3 expansion segments of 28S rRNA and <i>COI</i> gene sequences. The host status of 28 plant species was evaluated in greenhouse trials. All tested monocots, except rye and <i>Allium</i> species, were found to be hosts, while no reproduction occurred on dicots. Temperature-tank experiments helped determine that the life cycle of <i>M. marylandi</i> was completed between 17-35 °C, with a base temperature of 8.3 °C and a required heat sum of 493 degree-days (DD). In greenhouse trials in pasteurized soil and near-ideal growing conditions, <i>M. marylandi</i> did not cause significant growth reduction of creeping bentgrass cv. Penn A-4, even at very high J2 inoculation densities. It is highly probable that other biotic and abiotic factors contributed to the observed putting green damage.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":"56 1","pages":"20240046"},"PeriodicalIF":1.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11585362/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142709544","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 Mesocriconema xenoplax Parasitizing Sweet Cherry Trees in British Columbia, Canada. 寄生于加拿大不列颠哥伦比亚省甜樱桃树的 Mesocriconema xenoplax 的种群动态。
IF 1.4 4区 生物学
Journal of nematology Pub Date : 2024-11-23 eCollection Date: 2024-03-01 DOI: 10.2478/jofnem-2024-0041
Thomas Forge, Paige Munro
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