Taxonomy and Identification of Principal Foliar Nematode Species (Aphelenchoides and Litylenchus)
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Two New Nematode Genera, Safianema (Anguinidae) and Discotylenchus (Tylenchidae), with Descriptions of Three New Species
Proc. Helminthol. Soc. Wash. 47(1), 1980, p. 85-94 Two New Nematode Genera, Safianema (Anguinidae) and Discotylenchus (Tylenchidae), with Descriptions of Three New Species MOHAMMAD RAFIQ SIDDIQI Commonwealth Institute of Helminthology, St. Albans, Hertfordshire, England ABSTRACT: Safianema gen.n. is proposed under Anguininae, family Anguinidae. It differs from Di- tylenchus in having esophageal glands forming a long diverticulum over the intestine. It is compared with Pseudhalenchus whose diagnosis is amended. Safianema lutonense gen.n., sp.n. is described from peaty soil under oak in Luton, England. Safianema anchilisposomum (Tarjan, 1958) comb.n., S. damnatum (Massey, 1966) comb.n., and S. hylobii (Massey, 1966) comb.n. are proposed for species previously in Pseudhalenchus. Discotylenchus gen.n. is close to Filenchus but has a strongly tapering lip region with a distinct disc at the apex. Two new species of this genus are described—D. discretus (type species) from apple and cabbage soils at Damascus, Syria, and D. attenuatus from bush soil at Ibadan, Nigeria. From peaty soil underneath an oak tree at Luton Hoo, Luton, Bedfordshire, England, Safianema lutonense gen.n., sp.n. was collected by my daughter Safia Fatima Siddiqi; the new genus is named after her and the name is neuter in gender. Discotylenchus gen.n. is proposed under Tylenchidae for two new species, D. discretus (type species) and D. attenuatus, described below. The families Anguinidae and Tylenchidae were defined and differentiated from each other by Siddiqi (1971). Thus the genera Ditylenchus Filipjev, 1936 and Tylenchus Bastian, 1865 which were associated together under Tylenchidae for a long time were separated into two families, the former genus belonging to Anguinidae and the latter to Tylenchidae. -
Beech Leaf Disease Symptoms Caused by Newly Recognized Nematode Subspecies Litylenchus Crenatae Mccannii (Anguinata) Described from Fagus Grandifolia in North America
Received: 30 July 2019 | Revised: 24 January 2020 | Accepted: 27 January 2020 DOI: 10.1111/efp.12580 ORIGINAL ARTICLE Beech leaf disease symptoms caused by newly recognized nematode subspecies Litylenchus crenatae mccannii (Anguinata) described from Fagus grandifolia in North America Lynn Kay Carta1 | Zafar A. Handoo1 | Shiguang Li1 | Mihail Kantor1 | Gary Bauchan2 | David McCann3 | Colette K. Gabriel3 | Qing Yu4 | Sharon Reed5 | Jennifer Koch6 | Danielle Martin7 | David J. Burke8 1Mycology & Nematology Genetic Diversity & Biology Laboratory, USDA-ARS, Beltsville, Abstract MD, USA Symptoms of beech leaf disease (BLD), first reported in Ohio in 2012, include in- 2 Soybean Genomics & Improvement terveinal greening, thickening and often chlorosis in leaves, canopy thinning and mor- Laboratory, Electron Microscopy and Confocal Microscopy Unit, USDA-ARS, tality. Nematodes from diseased leaves of American beech (Fagus grandifolia) sent by Beltsville, MD, USA the Ohio Department of Agriculture to the USDA, Beltsville, MD in autumn 2017 3Ohio Department of Agriculture, Reynoldsburg, OH, USA were identified as the first recorded North American population of Litylenchus crena- 4Agriculture & Agrifood Canada, Ottawa tae (Nematology, 21, 2019, 5), originally described from Japan. This and other popu- Research and Development Centre, Ottawa, lations from Ohio, Pennsylvania and the neighbouring province of Ontario, Canada ON, Canada showed some differences in morphometric averages among females compared to 5Ontario Forest Research Institute, Ministry of Natural Resources and Forestry, Sault Ste. the Japanese population. Ribosomal DNA marker sequences were nearly identical to Marie, ON, Canada the population from Japan. A sequence for the COI marker was also generated, al- 6USDA-FS, Delaware, OH, USA though it was not available from the Japanese population. -
Morphological, Molecular and Phylogenetic Study of Filenchus
Alvani et al., J Plant Pathol Microbiol 2015, S:3 Plant Pathology & Microbiology http://dx.doi.org/10.4172/2157-7471.S3-001 Research Article Open Access Morphological, Molecular and Phylogenetic Study of Filenchus aquilonius as a New Species for Iranian Nematofauna and Some Other Known Nematodes from Iran Based on D2D3 Segments of 28 srRNA Gene Somaye Alvani1, Esmat Mahdikhani Moghaddam1*, Hamid Rouhani1 and Abbas Mohammadi2 1Department of Plant Pathology, Ferdowsi University of Mashhad, Mashhad, Iran 2Department of Plant Pathology, University of Birjand, Birjand, Iran Abstract Ziziphus zizyphus is very important crop in Iran. Because there isn’t any research of plant parasitic nematodes on Z. zizyphus, authors were encouraged to work on it. Nematodes isolated from the soil samples by whitehead method (1965) and permanent slides were prepared. Among the species Filenchus aquilonius is redescribed for the first time from Southern Khorasan province.F. aquilonius is characterized by lip region rounded, not offset, with fine annuls; four incisures in lateral line; Stylet moderately developed, 10-11.8 µm long with rounded knobs; Hemizonid immediately in front of excretory pore; Deirids at the level of excretory pore; Spermatheca an axial chamber and offset pouch; Tail about 120-157 µm, tapering gradually to a pointed terminus. For molecular identification the large subunit expansion segments of D2/D3 were performed for F. aquilonius to examine the phylogenetic relationships with other Tylenchids. DNA sequence data revealed that F. aquilonius had closet phylogenetic affinity withIrantylenchus vicinus as a sister group and with other Filenchus species for this region and placed them in one clade with 100% for bootstap value support. -
Description of Seinura Italiensis N. Sp.(Tylenchomorpha
JOURNAL OF NEMATOLOGY Article | DOI: 10.21307/jofnem-2020-018 e2020-18 | Vol. 52 Description of Seinura italiensis n. sp. (Tylenchomorpha: Aphelenchoididae) found in the medium soil imported from Italy Jianfeng Gu1,*, Munawar Maria2, 1 3 Lele Liu and Majid Pedram Abstract 1Technical Centre of Ningbo Seinura italiensis n. sp. isolated from the medium soil imported from Customs (Ningbo Inspection and Italy is described and illustrated using morphological and molecular Quarantine Science Technology data. The new species is characterized by having short body (477 Academy), No. 8 Huikang, Ningbo, (407-565) µm and 522 (469-590) µm for males and females, respec- 315100, Zhejiang, P.R. China. tively), three lateral lines, stylet lacking swellings at the base, and ex- 2Laboratory of Plant Nematology, cretory pore at the base or slightly anterior to base of metacorpus; Institute of Biotechnology, College females have 58.8 (51.1-69.3) µm long post-uterine sac (PUS), elon- of Agriculture and Biotechnology, gate conical tail with its anterior half conoid, dorsally convex, and Zhejiang University, Hangzhou, ventrally slightly concave and the posterior half elongated, narrower, 310058, Zhejiang, P.R. China. with finely rounded to pointed tip and males having seven caudal papillae and 14.1 (12.6-15.0) µm long spicules. Morphologically, the 3Department of Plant Pathology, new species is similar to S. caverna, S. chertkovi, S. christiei, S. hyr- Faculty of Agriculture, Tarbiat cania, S. longicaudata, S. persica, S. steineri, and S. tenuicaudata. Modares University, Tehran, Iran. The differences of the new species with aforementioned species are *E-mail: [email protected] discussed. -
Mitochondrial COI Gene Is Valid to Delimitate Tylenchidae (Nematoda: Tylenchomorpha) Species
JOURNAL OF NEMATOLOGY Article | DOI: 10.21307/jofnem-2020-038 e2020-38 | Vol. 52 Mitochondrial COI gene is valid to delimitate Tylenchidae (Nematoda: Tylenchomorpha) species Mengxin Bai1, Xue Qing2,*, Kaikai Qiao1, 3, Xulan Ning1, Shun Xiao1, Xi Cheng1 and Abstract 1, Guokun Liu * Tylenchidae is a widely distributed soil-inhabiting nematode family. 1Key Laboratory of Biopesticide Regardless their abundance, molecular phylogeny based on rRNA and Chemical Biology, Ministry genes is problematic, and the delimitation of taxa in this group remains of Education, Fujian Agriculture poorly documented and highly uncertain. Mitochondrial Cytochrome and Forestry University, 350002, Oxidase I (COI) gene is an important barcoding gene that has been Fuzhou, Fujian, China. widely used species identifications and phylogenetic analyses. 2 However, currently COI data are only available for one species in Department of Plant Pathology, Tylenchidae. In present study, we newly obtained 27 COI sequences Nanjing Agricultural University, from 12 species and 26 sequences from rRNA genes. The results Nanjing, 210095, China. suggest that the COI gene is valid to delimitate Tylenchidae species 3State Key Laboratory of Cotton but fails to resolve phylogenetic relationships. Biology, Institute of Cotton Research of CAAS, 455000, Keywords Anyang, Henan, China. Lelenchus leptosoma, Phylogeny, 28S rRNA, 18S rRNA, Species *E-mails: [email protected]; identification. [email protected] This paper was edited by Zafar Ahmad Handoo. Received for publication January 3, 2020. Tylenchidae is a widely distributed soil-inhabiting 2006; Subbotin et al., 2006). However, rRNA genes nematode family characterized by a weak stylet, an are problematic in Tylenchidae phylogeny and the undifferentiated non-muscular pharyngeal corpus, unresolved status is unlikely to be improved by intensive and a filiform tail. -
PCR-RFLP and Sequencing Analysis of Ribosomal DNA of Bursaphelenchus Nematodes Related to Pine Wilt Disease(L)
Fundam. appl. Nemalol., 1998,21 (6), 655-666 PCR-RFLP and sequencing analysis of ribosomal DNA of Bursaphelenchus nematodes related to pine wilt disease(l) Hideaki IvVAHORI, Kaku TSUDA, Natsumi KANZAKl, Katsura IZUI and Kazuyoshi FUTAI Cmduate School ofAgriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan. Accepted for publication 23 December 1997. Summary -A polymerase chain reaction - restriction fragment polymorphism (PCR-RFLP) analysis was used for the discri mination of isolates of Bursaphelenchus nematode. The isolares of B. xylophilus examined originared from Japan, the United Stares, China, and Canada and the B. mucronatus isolates from Japan, China, and France. Ribosomal DNA containing the 5.8S gene, the internai transcribed spacer region 1 and 2, and partial regions of 18S and 28S gene were amplified by PCR. Digestion of the amplified products of each nematode isolate with twelve restriction endonucleases and examination of resulting RFLP data by cluster analysis revealed a significant gap between B. xylophllus and B. mucronatus. Among the B. xylophilus isolares examined, Japanese pathogenic, Chinese and US isolates were ail identical, whereas Japanese non-pathogenic isolares were slightly distinct and Canadian isolates formed a separate cluster. Among the B. mucronalUS isolates, two Japanese isolares were very similar to each other and another Japanèse and one Chinese isolare were identical to each other. The DNA sequence data revealed 98 differences (nucleotide substitutions or gaps) in 884 bp investigated between B. xylophilus isolare and B. mucronmus isolate; DNA sequence data of Aphelenchus avenae and Aphelenchoides fragariae differed not only from those of Bursaphelenchus nematodes, but also from each other. -
2020.01.27.921304.Full.Pdf
bioRxiv preprint doi: https://doi.org/10.1101/2020.01.27.921304; this version posted January 28, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 A novel metabarcoding strategy for studying nematode 2 communities 3 4 Md. Maniruzzaman Sikder1, 2, Mette Vestergård1, Rumakanta Sapkota3, Tina Kyndt4, 5 Mogens Nicolaisen1* 6 7 1Department of Agroecology, Aarhus University, Slagelse, Denmark 8 2Department of Botany, Jahangirnagar University, Savar, Dhaka, Bangladesh 9 3Department of Environmental Science, Aarhus University, Roskilde, Denmark 10 4Department of Biotechnology, Ghent University, Ghent, Belgium 11 12 13 *Corresponding author 14 Email: [email protected] 15 16 Abstract 17 Nematodes are widely abundant soil metazoa and often referred to as indicators of soil health. 18 While recent advances in next-generation sequencing technologies have accelerated 19 research in microbial ecology, the ecology of nematodes remains poorly elucidated, partly due 20 to the lack of reliable and validated sequencing strategies. Objectives of the present study 21 were (i) to compare commonly used primer sets and to identify the most suitable primer set 22 for metabarcoding of nematodes; (ii) to establish and validate a high-throughput sequencing 23 strategy for nematodes using Illumina paired-end sequencing. In this study, we tested four 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.01.27.921304; this version posted January 28, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. -
Transcriptome Profiling of the Root-Knot Nematode Meloidogyne Enterolobii During Parasitism and Identification of Novel Effector Proteins
Ecole Doctorale de Sciences de la Vie et de la Santé Unité de recherche : UMR ISA INRA 1355-UNS-CNRS 7254 Thèse de doctorat Présentée en vue de l’obtention du grade de docteur en Biologie Moléculaire et Cellulaire de L’UNIVERSITE COTE D’AZUR par NGUYEN Chinh Nghia Etude de la régulation du transcriptome de nématodes parasites de plante, les nématodes à galles du genre Meloidogyne Dirigée par Dr. Bruno FAVERY Soutenance le 8 Décembre, 2016 Devant le jury composé de : Pr. Pierre FRENDO Professeur, INRA UNS CNRS Sophia-Antipolis Président Dr. Marc-Henri LEBRUN Directeur de Recherche, INRA AgroParis Tech Grignon Rapporteur Dr. Nemo PEETERS Directeur de Recherche, CNRS-INRA Castanet Tolosan Rapporteur Dr. Stéphane JOUANNIC Chargé de Recherche, IRD Montpellier Examinateur Dr. Bruno FAVERY Directeur de Recherche, UNS CNRS Sophia-Antipolis Directeur de thèse Doctoral School of Life and Health Sciences Research Unity: UMR ISA INRA 1355-UNS-CNRS 7254 PhD thesis Presented and defensed to obtain Doctor degree in Molecular and Cellular Biology from COTE D’AZUR UNIVERITY by NGUYEN Chinh Nghia Comprehensive Transcriptome Profiling of Root-knot Nematodes during Plant Infection and Characterisation of Species Specific Trait PhD directed by Dr Bruno FAVERY Defense on December 8th 2016 Jury composition : Pr. Pierre FRENDO Professeur, INRA UNS CNRS Sophia-Antipolis President Dr. Marc-Henri LEBRUN Directeur de Recherche, INRA AgroParis Tech Grignon Reporter Dr. Nemo PEETERS Directeur de Recherche, CNRS-INRA Castanet Tolosan Reporter Dr. Stéphane JOUANNIC Chargé de Recherche, IRD Montpellier Examinator Dr. Bruno FAVERY Directeur de Recherche, UNS CNRS Sophia-Antipolis PhD Director Résumé Les nématodes à galles du genre Meloidogyne spp. -
JOURNAL of NEMATOLOGY Nothotylenchus Andrassy N. Sp. (Nematoda: Anguinidae) from Northern Iran
JOURNAL OF NEMATOLOGY Article | DOI: 10.21307/jofnem-2018-025 Issue 0 | Vol. 0 Nothotylenchus andrassy n. sp. (Nematoda: Anguinidae) from Northern Iran Parisa Jalalinasab,1 Mohsen Nassaj 2 1 Hosseini and Ramin Heydari * Abstract 1Department of Plant Protection, College of Agriculture and Natural Nothotylenchus andrassy n. sp. is described and illustrated from resources, University of Tehran, moss (Sphagnum sp.) based on morphology and molecular analyses. Karaj, Iran. Morphologically, this new species is characterized by a medium body size, six incisures in the lateral fields, and a delicate stylet (8–9 µm 2Academic Center for Education, long) with clearly defined knobs. Pharynx with fusiform, valveless, non- Culture and Research, Guilan muscular and sometimes indistinct median bulb. Basal pharyngeal Branch Rasht, Guilan, Iran bulb elongated and offset from the intestine; a long post-vulval uterine *E-mail: [email protected]. sac (55% of vulva to anus distance); and elongate, conical tail with pointed tip. Nothotylenchus andrassy n. sp. is morphologically similar This paper was edited by Zafar to five known species of the genus, namely Nothotylenchus geraerti, Ahmad Handoo. Nothotylenchus medians, Nothotylenchus affinis, Nothotylenchus Received for publication December buckleyi, and Nothotylenchus persicus. The results of molecular 5, 2017. analysis of rRNA gene sequences, including the D2–D3 expansion region of 28S rRNA, internal transcribed spacer (ITS) rRNA and partial 18S rRNA gene are provide for the new species. Key words 18S rRNA, D2–D3 region, Molecular, Morphology, Moss, Sphagnum sp., ITS rRNA. The genus Nothotylenchus Thorne, 1941 belongs well resolved in the phylogenetic analysis using the to subfamily Anguinidae Nicoll, 1935 within the D2–D3 expansion segments of 28S, ITS, and partial family Anguinidae Nicoll, 1935. -
Invasive Species Compendium Detailed Coverage of Invasive Species Threatening Livelihoods and the Environment Worldwide
() Invasive Species Compendium Detailed coverage of invasive species threatening livelihoods and the environment worldwide Filter by type Search Datasheet Additional resources (datasheet/additionalresources/6381? scientificName=Aphelenchoides%20fragariae) Aphelenchoides fragariae (strawberry crimp nematode) Toolbox Invasives Open Data (https://ckan.cabi.org/data/) Horizon Scanning Tool (https://www.cabi.org/HorizonScanningTool) Mobile Apps (https://play.google.com/store/apps/dev?id=8227528954463674373&hl=en_GB) Country Pest Alerts (https://www.plantwise.org/KnowledgeBank/pestalert/signup) Datasheet Aphelenchoides fragariae (strawberry crimp nematode) Index Identity (datasheet/6381#toidentity) Taxonomic Tree (datasheet/6381#totaxonomicTree) Notes on Taxonomy and Nomenclature (datasheet/6381#tonotesOnTaxonomyAndNomenclature) Description (datasheet/6381#todescription) Distribution Table (datasheet/6381#todistributionTable) / Risk of Introduction (datasheet/6381#toriskOfIntroduction) Hosts/Species Affected (datasheet/6381#tohostsOrSpeciesAffected) Host Plants and Other Plants Affected (datasheet/6381#tohostPlants) Growth Stages (datasheet/6381#togrowthStages) Symptoms (datasheet/6381#tosymptoms) List of Symptoms/Signs (datasheet/6381#tosymptomsOrSigns) Biology and Ecology (datasheet/6381#tobiologyAndEcology) Natural enemies (datasheet/6381#tonaturalEnemies) Pathway Vectors (datasheet/6381#topathwayVectors) Plant Trade (datasheet/6381#toplantTrade) Impact (datasheet/6381#toimpact) Detection and Inspection (datasheet/6381#todetectionAndInspection) -
INTERNATIONAL STANDARDS for PHYTOSANITARY MEASURES (Ispms) ISPM No
INTERNATIONAL STANDARDS FOR PHYTOSANITARY MEASURES 1 to 24 (2005 edition) TC/D/A0450E/1/03.06/500 INTERNATIONAL STANDARDS FOR PHYTOSANITARY MEASURES 1 to 24 (2005 edition) Produced by the Secretariat of the International Plant Protection Convention FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 2006 The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. All rights reserved. Reproduction and dissemination of material in this information product for educational or other non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of material in this information product for resale or other commercial purposes is prohibited without written permission of the copyright holders. Applications for such permission should be addressed to the Chief, Publishing Management Service, Information Division, FAO, Viale delle Terme di Caracalla, 00100 Rome, Italy or by e-mail to [email protected] © FAO 2006 CONTENTS GENERAL INTRODUCTION Endorsement...................................................................................................................................................................... iv Application -
Life-Stage Specific Transcriptomes of a Migratory Endoparasitic Plant
www.nature.com/scientificreports OPEN Life-stage specifc transcriptomes of a migratory endoparasitic plant nematode, Radopholus similis Received: 20 July 2018 Accepted: 2 April 2019 elucidate a diferent parasitic and Published: xx xx xxxx life strategy of plant parasitic nematodes Xin Huang, Chun-Ling Xu, Si-Hua Yang, Jun-Yi Li, Hong-Le Wang, Zi-Xu Zhang, Chun Chen & Hui Xie Radopholus similis is an important migratory endoparasitic nematode, severely harms banana, citrus and many other commercial crops. Little is known about the molecular mechanism of infection and pathogenesis of R. similis. In this study, 64761 unigenes were generated from eggs, juveniles, females and males of R. similis. 11443 unigenes showed signifcant expression diference among these four life stages. Genes involved in host parasitism, anti-host defense and other biological processes were predicted. There were 86 and 102 putative genes coding for cell wall degrading enzymes and antioxidase respectively. The amount and type of putative parasitic-related genes reported in sedentary endoparasitic plant nematodes are variable from those of migratory parasitic nematodes on plant aerial portion. There were no sequences annotated to efectors in R. similis, involved in feeding site formation of sedentary endoparasites nematodes. This transcriptome data provides a new insight into the parasitic and pathogenic molecular mechanisms of the migratory endoparasitic nematodes. It also provides a broad idea for further research on R. similis. Te burrowing nematode, Radopholus similis [(Cobb, 1893) Torne, 1949] is an important migratory endopar- asitic plant nematode that was frst discovered by Cobb in 1891, on the banana roots from Fiji. Previously, it was reported that R.