NEMATODA: HETERODERINAE) SLOVENIJE Project1:Monografija 25.7.2009 21:39 Page 3
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JOURNAL of NEMATOLOGY Description of Heterodera
JOURNAL OF NEMATOLOGY Article | DOI: 10.21307/jofnem-2020-097 e2020-97 | Vol. 52 Description of Heterodera microulae sp. n. (Nematoda: Heteroderinae) from China a new cyst nematode in the Goettingiana group Wenhao Li1, Huixia Li1,*, Chunhui Ni1, Deliang Peng2, Yonggang Liu3, Ning Luo1 and Abstract 1 Xuefen Xu A new cyst-forming nematode, Heterodera microulae sp. n., was 1College of Plant Protection, Gansu isolated from the roots and rhizosphere soil of Microula sikkimensis Agricultural University/Biocontrol in China. Morphologically, the new species is characterized by Engineering Laboratory of Crop lemon-shaped body with an extruded neck and obtuse vulval cone. Diseases and Pests of Gansu The vulval cone of the new species appeared to be ambifenestrate Province, Lanzhou, 730070, without bullae and a weak underbridge. The second-stage juveniles Gansu Province, China. have a longer body length with four lateral lines, strong stylets with rounded and flat stylet knobs, tail with a comparatively longer hyaline 2 State Key Laboratory for Biology area, and a sharp terminus. The phylogenetic analyses based on of Plant Diseases and Insect ITS-rDNA, D2-D3 of 28S rDNA, and COI sequences revealed that the Pests, Institute of Plant Protection, new species formed a separate clade from other Heterodera species Chinese Academy of Agricultural in Goettingiana group, which further support the unique status of Sciences, Beijing, 100193, China. H. microulae sp. n. Therefore, it is described herein as a new species 3Institute of Plant Protection, Gansu of genus Heterodera; additionally, the present study provided the first Academy of Agricultural Sciences, record of Goettingiana group in Gansu Province, China. -
Root-Parasitic Nematodes of Rice
Articlebibliographique ROOT-PARASITIC NEMATODES OF RICE Renaud FORTUNERand Georges MERNY ORSTOM, Laboratoire de Nématologie, B.P. TT 51, Abidjan, Côte d’Ivoire and ORSTOM, Laboratoire de Biologie des Sols, 70-74 route d’Aulnay, 93140 Bondy, France Geographicaldistribution of nematodes Hirschmanniella of which several species have associated with rice been observed associated with rice. H. oryzae is the most frequently encountered inal1 countries whererice is grown, except Europe. Another More than one hundred species of nematodes species, H. spinicaudata, iscommon inWest have been reported from upland and paddyrice Africa andhas been observed once inSouth in many countries (Tab. 1).Their frequency and America. In WestAfrica a geographical gradient importance are very variable and, in mostcases is observed in the distribution of both species : the existence of a parasitic relationship withrice H. spinicaudata is highly prevalent in the humid is probable but has not been demonstrated. countries ,like Ivory Coast whereas H. oryzae is Manyspecies of rootnematodes have been foundmostly in the Sahelian regions (North observed both in dry and irrigatedfields but very Senegal) ; a balanced mixture of both species is few species are found in both situations. Several observed in intermediategeographical areas surveys made by the authors in WestAfrica have (Gambia). shown that a relatively low number of species Ten recognizedspecies of Pratylenchus have are adapted to permanently flooded conditions. been identified parasitizing rice. The most fre- When the field is only temporarily flooded, the quent is P. brachyurus, rather common in Afri- number of species present is higherand the can upland rice fields, which has been observed nematode fauna tends to ressemble that observedonce in South America ; P. -
DNA Barcoding Evidence for the North American Presence of Alfalfa Cyst Nematode, Heterodera Medicaginis Tom Powers
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Papers in Plant Pathology Plant Pathology Department 8-4-2018 DNA barcoding evidence for the North American presence of alfalfa cyst nematode, Heterodera medicaginis Tom Powers Andrea Skantar Timothy Harris Rebecca Higgins Peter Mullin See next page for additional authors Follow this and additional works at: https://digitalcommons.unl.edu/plantpathpapers Part of the Other Plant Sciences Commons, Plant Biology Commons, and the Plant Pathology Commons This Article is brought to you for free and open access by the Plant Pathology Department at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Papers in Plant Pathology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Authors Tom Powers, Andrea Skantar, Timothy Harris, Rebecca Higgins, Peter Mullin, Saad Hafez, Zafar Handoo, Tim Todd, and Kirsten S. Powers JOURNAL OF NEMATOLOGY Article | DOI: 10.21307/jofnem-2019-016 e2019-16 | Vol. 51 DNA barcoding evidence for the North American presence of alfalfa cyst nematode, Heterodera medicaginis Thomas Powers1,*, Andrea Skantar2, Tim Harris1, Rebecca Higgins1, Peter Mullin1, Saad Hafez3, Abstract 2 4 Zafar Handoo , Tim Todd & Specimens of Heterodera have been collected from alfalfa fields 1 Kirsten Powers in Kearny County, Kansas and Carbon County, Montana. DNA 1University of Nebraska-Lincoln, barcoding with the COI mitochondrial gene indicate that the species is Lincoln NE 68583-0722. not Heterodera glycines, soybean cyst nematode, H. schachtii, sugar beet cyst nematode, or H. trifolii, clover cyst nematode. Maximum 2 Mycology and Nematology Genetic likelihood phylogenetic trees show that the alfalfa specimens form a Diversity and Biology Laboratory sister clade most closely related to H. -
The Mitochondrial Genome of the Soybean Cyst Nematode, Heterodera Glycines
565 The mitochondrial genome of the soybean cyst nematode, Heterodera glycines Tracey Gibson, Daniel Farrugia, Jeff Barrett, David J. Chitwood, Janet Rowe, Sergei Subbotin, and Mark Dowton Abstract: We sequenced the entire coding region of the mitochondrial genome of Heterodera glycines. The sequence ob- tained comprised 14.9 kb, with PCR evidence indicating that the entire genome comprised a single, circular molecule of ap- proximately 21–22 kb. The genome is the most T-rich nematode mitochondrial genome reported to date, with T representing over half of all nucleotides on the coding strand. The genome also contains the highest number of poly(T) tracts so far reported (to our knowledge), with 60 poly(T) tracts ≥ 12 Ts. All genes are transcribed from the same mitochon- drial strand. The organization of the mitochondrial genome of H. glycines shows a number of similarities compared with Ra- dopholus similis, but fewer similarities when compared with Meloidogyne javanica. Very few gene boundaries are shared with Globodera pallida or Globodera rostochiensis. Partial mitochondrial genome sequences were also obtained for Hetero- dera cardiolata (5.3 kb) and Punctodera chalcoensis (6.8 kb), and these had identical organizations compared with H. gly- cines. We found PCR evidence of a minicircular mitochondrial genome in P. chalcoensis, but at low levels and lacking a noncoding region. Such circularised genome fragments may be present at low levels in a range of nematodes, with multipar- tite mitochondrial genomes representing a shift to a condition in which these subgenomic circles predominate. Key words: mitochondrial, nematode, gene rearrangement, Punctodera, Punctoderinae, Heteroderidae, Heterodera cardio- lata. -
Histopathology of Brassica Oleracea Var. Capitata Subvar
Türk. entomol. derg., 2012, 36 (3): 301-309 ISSN 1010-6960 Orijinal araştırma (Original article) Histopathology of Brassica oleracea var. capitata subvar. alba infected with Heterodera cruciferae Franklin, 1945 (Tylenchida: Heteroderidae) Heterodera cruciferae Franklin, 1945 (Tylenchida: Heteroderidae) ile bulaşık Brassica oleracea var. capitata subvar. alba`nın histopatojisi Sevilhan MENNAN1* Zafar A. HANDOO2 Summary Anatomical changes induced by the cabbage cyst nematode (Heterodera cruciferae) have been insufficiently characterized. Here these changes were described in the root tissues of white head cabbage variety (Yalova F1) commonly grown in the Black Sea region of Turkey, where cabbage-growing areas are heavily infested. In glasshouse experiments conducted at 20 degrees C, susceptible white head cabbage seedlings were inoculated with 0 (untreated control) or 1000 juveniles/300 ml soil. Three, 6, 12, 24, 48, 72 h and 30 days after inoculations, two plants from each treatment were removed, embedded in paraffin by using microwave technique and then examined by photomicrography. Second-stage passed through the vascular system after root penetration and they started to feed as sedentary. In cross section of the roots, large cells in the cortex of infected plants were filled with moderately dense cytoplasm and the walls were heavily stained and ruptured. In longitudinal section, internal walls were perforated. Syncytia that had different degrees of vacuolization, and syncytial nuclei were hypertrophied and deeply indented. Contained conspicuous nucleoli were noticeable 24 h after inoculation. Syncytia originating from endodermal cells possessed ruptured walls around the feeding site of the developing juvenile. White females were observed on the roots 30 days after inoculation, a time at which plant height was reduced and root proliferation increased. -
Nematoda: Heteroderidae)
Nematology, 2007, Vol. 9(4), 483-497 Morphological and molecular studies on Heterodera sacchari, H. goldeni and H. leuceilyma (Nematoda: Heteroderidae) Zahra TANHA MAAFI 1, Dieter STURHAN 2, Zafar HANDOO 3,MishaelMOR 4, ∗ Maurice MOENS 5 and Sergei A. SUBBOTIN 6,7, 1 Plant Pests and Diseases Research Institute, P.O. Box 1454-Tehran, 19395, Iran 2 c/o Biologische Bundesanstalt für Land- und Forstwirtschaft, Institut für Nematologie und Wirbeltierkunde, Toppheideweg 88, 48161 Münster, Germany 3 Nematology Laboratory, Plant Sciences Institute, Beltsville Agricultural Research Center, Beltsville, MD 20705-2350, USA 4 Department of Nematology, ARO, The Volcani Center, P.O. Box 6, Bet-Dagan, Israel 5 Agricultural Research Centre, Burg. Van Gansberghelaan 96, Merelbeke, 9820, Belgium 6 Plant Pest Diagnostic Center, California Department of Food and Agriculture, 3294 Meadowview Road, Sacramento, CA 95832-1448, USA 7 Centre of Parasitology of A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninskii Prospect 33, Moscow, 117071, Russia Received: 21 December 2006; revised: 12 March 2007 Accepted for publication: 13 March 2007 Summary – Heterodera sacchari, H. leuceilyma and H. goldeni are closely related members of the H. sacchari species complex, which is mainly characterised and distinguished from all other described Heterodera species by the presence of finger-like projections of the strongly developed underbridge in the vulval cone of the cysts. Males are rare in all three species and are described here in H. goldeni for the first time. Reproduction appears to be parthenogenetic. There are only minor morphological distinctions between the three species, particularly after our present studies have emended their original descriptions from various populations. -
Diversidad De Nemátodos Fitoparásitos Asociados Al Cultivo De Maíz En El Municipio De Guasave, Sinaloa
INSTITUTO POLITÉCNICO NACIONAL CENTRO INTERDISCIPLINARIO DE INVESTIGACIÓN PARA EL DESARROLLO INTEGRAL REGIONAL UNIDAD SINALOA Diversidad de nemátodos fitoparásitos asociados al cultivo de maíz en el municipio de Guasave, Sinaloa. TESIS QUE PARA OBTENER EL GRADO DE MAESTRÍA EN RECURSOS NATURALES Y MEDIO AMBIENTE PRESENTA ULISES GONZÁLEZ GÜITRÓN GUASAVE, SINALOA; MÉXICO DICIEMBRE DE 2013 I II III RECONOCIMIENTO A PROYECTOS Y BECAS La investigación se realizó en los laboratorios de Nemátodos y Nutrición Vegetal pertenecientes al centro interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa (CIIDIR-SIN) del Instituto Politécnico Nacional (IPN). El trabajo de maestría estuvo asesorado por el Dr. Manuel Mundo Ocampo y el M.C. Jesús Ricardo Camacho Báez, contando con el apoyo otorgado por el Consejo Nacional de Ciencia y Tecnologia CONACyT, con número de CVU 418291. Se agradece el apoyo al programa Institucional de Formación de Investigadores (PIFI) con el proyecto “Búsqueda de nemátodos potencialmente entomopatógenos asociados al cultivo de maíz en el norte de Sinaloa (segunda etapa)” con clave 20131792. Así como el reconocimiento a INAPI SINALOA por su beca de terminación de tesis y a la Organización de Nematólogos de los Trópicos Americanos (ONTA) por su premio económico con el cual pude asistir al congreso número XLIV en Cancún, México. IV DEDICATORIA El presente trabajo está dedicado a dos personas muy especiales que quiero con todo mi corazón, que supieron hacer de mí una persona consiente y con valores. Las cuales me han ayudado a sobrellevar todo tipo de problemas y situaciones. Me refiero a mis padres Joel González Betancourt e Irma María Güitrón Padilla. -
Brassica Spp.) – 151
II.3. BRASSICA CROPS (BRASSICA SPP.) – 151 Chapter 3. Brassica crops (Brassica spp.) This chapter deals with the biology of Brassica species which comprise oilseed rape, turnip rape, mustards, cabbages and other oilseed crops. The chapter contains information for use during the risk/safety regulatory assessment of genetically engineered varieties intended to be grown in the environment (biosafety). It includes elements of taxonomy for a range of Brassica species, their centres of origin and distribution, reproductive biology, genetics, hybridisation and introgression, crop production, interactions with other organisms, pests and pathogens, breeding methods and biotechnological developments, and an annex on common pathogens and pests. The OECD gratefully acknowledges the contribution of Dr. R.K. Downey (Canada), the primary author, without whom this chapter could not have been written. The chapter was prepared by the OECD Working Group on the Harmonisation of Regulatory Oversight in Biotechnology, with Canada as the lead country. It updates and completes the original publication on the biology of Brassica napus issued in 1997, and was initially issued in December 2012. Data from USDA Foreign Agricultural Service and FAOSTAT have been updated. SAFETY ASSESSMENT OF TRANSGENIC ORGANISMS: OECD CONSENSUS DOCUMENTS, VOLUME 5 © OECD 2016 152 – II.3. BRASSICA CROPS (BRASSICA SPP.) Introduction The plants within the family Brassicaceae constitute one of the world’s most economically important plant groups. They range from noxious weeds to leaf and root vegetables to oilseed and condiment crops. The cole vegetables are perhaps the best known group. Indeed, the Brassica vegetables are a dietary staple in every part of the world with the possible exception of the tropics. -
Exotic Nematodes of Grains CP
INDUSTRY BIOSECURITY PLAN FOR THE GRAINS INDUSTRY Generic Contingency Plan Exotic nematodes affecting the grains industry Specific examples detailed in this plan: Maize cyst nematode (Heterodera zeae), Soybean cyst nematode (Heterodera glycines) and Chickpea cyst nematode (Heterodera ciceri) Plant Health Australia August 2013 Disclaimer The scientific and technical content of this document is current to the date published and all efforts have been made to obtain relevant and published information on these pests. New information will be included as it becomes available, or when the document is reviewed. The material contained in this publication is produced for general information only. It is not intended as professional advice on any particular matter. No person should act or fail to act on the basis of any material contained in this publication without first obtaining specific, independent professional advice. Plant Health Australia and all persons acting for Plant Health Australia in preparing this publication, expressly disclaim all and any liability to any persons in respect of anything done by any such person in reliance, whether in whole or in part, on this publication. The views expressed in this publication are not necessarily those of Plant Health Australia. Further information For further information regarding this contingency plan, contact Plant Health Australia through the details below. Address: Level 1, 1 Phipps Close DEAKIN ACT 2600 Phone: +61 2 6215 7700 Fax: +61 2 6260 4321 Email: [email protected] Website: www.planthealthaustralia.com.au An electronic copy of this plan is available from the web site listed above. © Plant Health Australia Limited 2013 Copyright in this publication is owned by Plant Health Australia Limited, except when content has been provided by other contributors, in which case copyright may be owned by another person. -
Vovlas Et Al., EJPP Page 1 Integrative Diagnosis and Parasitic Habits of Cryphodera Brinkmani a Non-Cyst Forming Heteroderid Ne
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC Vovlas et al., EJPP Page 1 Integrative diagnosis and parasitic habits of Cryphodera brinkmani a non-cyst forming heteroderid nematode intercepted on Japanese white pine bonsai trees imported into Italy Nicola Vovlas1, Nicola Trisciuzzi2, Alberto Troccoli1, Francesca De Luca1, Carolina Cantalapiedra-Navarrete3, Juan E. Palomares-Rius4, and Pablo Castillo3 1 Istituto per la Protezione delle Piante (IPP), Consiglio Nazionale delle Ricerche (CNR), U.O.S. di Bari, Via G. Amendola 122/D, 70126 Bari, Italy 2 Centro Ricerca e Sperimentazione in Agricoltura (CRSA) “Basile Caramia”, Via Cisternino, 281 Locorotondo (BA), Italy 3 Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Apdo. 4084, 14080 Córdoba, Campus de Excelencia Internacional Agroalimentario, ceiA3, Spain 4 xxxxxxxxxxxxxxxxxxx, Japan Received: ______/Accepted ________. *Author for correspondence: P. Castillo E-mail: [email protected] Fax: +34957499252 Short Title: New Heterodera elachista on corn in northern Italy Vovlas et al., EJPP Page 2 Abstract The non-cyst forming heteroderid nematode Cryphodera brinkmani was detected in Italy parasitizing roots of Japanese white pine bonsai (Pinus parviflora) trees imported from Japan. Morphology and morphometrical traits of the intercepted population on this new host for C. brinkmani were in agreement with the original description, except for some minor differences on male morphology. Integrative molecular data for this species were obtained using D2-D3 expansion regions of 28S rDNA, ITS1-rDNA, the partial 18S rDNA, and the protein-coding mitochondrial gene, cytochrome oxidase c subunit I (COI). The phylogenetic relationships of this species with other representatives of non-cyst and cyst-forming Heteroderidae using ITS1 are presented and indicated that C. -
Biology of Rice Root Nematode Hirschmanniella Oryzae (Luc & Godey, 1964)
University of Yangon Research Journal 2019, Vol.9, No.2 491 BIOLOGY OF RICE ROOT NEMATODE HIRSCHMANNIELLA ORYZAE (LUC & GODEY, 1964) IN HLAING THARYAR TOWNSHIP Hla Hla Maw1, Aye Kyi2 and Thant Thant Phone3 Abstract Hirschmanniella oryzae species is known as rice root nematode. This species is endo-parasitic and causes rice root rot disease. Diseased rice plants were collected from the rice fields of Hlaingtharyar Township. The H. oryzae nematodes were extracted from the roots of these rice plants. The biology of H. oryzae in this study field was observed that juvenile to adult took 1 week and adult to juvenile 3 weeks, juvenile to juvenile 4 weeks and adult to adult 4 weeks. Three generations had occurred during the rice growing season. Keywords: biology, rice root nematode, Hirschmanniella oryzae Introduction Rice is the dominant staple food crop in the developing countries. Almost 90 percent of rice is produce and consumed in Asia, and 96 percent in developing countries (FAO, 2004). In Myanmar, rice is the national food crop. Rice production needed for local consumption as well as for export. However, rice crop is subjected to a number of pests and diseases and plant parasitic nematodes are generally regarded as potentially serious constraints to crop productively. Among the rice diseases, nematode infestation can result in yield losses of up to 30 percent in general (Doberman and Fairhurst, 2000). More than one hundred species of plant parasitic nematodes have been found associated with cultivated rice. Four major species occur in the rice growing areas of Myanmar. They are rice stem nematode, Ditylenchus angustus, White tip nematode, Aphelenchoides besseyi, rice root-knot nematode, Meloidogyne graminicola and rice root nematode, Hirschmanniella oryzae (Mya Mya, 1983). -
Rapid Identification of Cyst (Heterodera Spp., Globodera Spp
MEC995.fm Page 1223 Saturday, August 12, 2000 3:15 PM Molecular Ecology (2000) 9, 1223–1232 RapidBlackwell Science, Ltd identification of cyst (Heterodera spp., Globodera spp.) and root-knot (Meloidogyne spp.) nematodes on the basis of ITS2 sequence variation detected by PCR-single-strand conformational polymorphism (PCR-SSCP) in cultures and field samples J. P. CLAPP,* C. D. VAN DER STOEL† and W. H. VAN DER PUTTEN† *Department of Biosciences, The University of Kent, Canterbury CT2 7NJ, UK, †Department of Multi-trophic Interactions, Netherlands Institute of Ecology, Centre for Terrestrial Ecology, Postbus 40, 6666 ZG, Heteren, The Netherlands Abstract Cyst and root-knot nematodes show high levels of gross morphological similarity. This presents difficulties for the study of their ecology in natural ecosystems. In this study, cyst and root-knot nematode species, as well as some ectoparasitic nematode species, were identified using the second internal transcribed spacer (ITS2) sequence variation detected by polymerase chain reaction-single-strand conformational polymorphism (PCR-SSCP). The ITS2 region was sufficiently variable within the taxa investigated to allow species to be separated on the basis of minor sequence variation. The PCR primers used in this study were effective for 12 species with three genera within the Heteroderinae (Globodera pallida, G. rostochiensis, Heterodera arenaria/avenae, H. ciceri, H. daverti, H. hordecalis, H. mani, H. schachtii, H. trifolii, Meloidogyne ardenensis, M. duytsi and M. maritima). However, pathotypes of Globodera pallida and G. rostochiensis could not be distinguished. The method was tested at two coastal dune locations in The Netherlands (one in the lime- poor dunes of the north and one in calcareous dunes of the south) to determine the popu- lation structure of cyst nematodes.