Molecular diversity of Rice grassy stunt virus in Vietnam

Ta Hoang-Anh, Nguyen Doan-Phuong, Causse Sandrine, Nguyen Thanh Duc, Ngo Vinh-Vien, Hebrard Eugénie. 2013. Molecular diversity of Rice grassy stunt virus in Vietnam. Virus Genes, 46 (2) : 383-386.

Quartile : Q3, Sujet : GENETICS & HEREDITY / Quartile : Q4, Sujet : VIROLOGY

Résumé : Rice grassy stunt virus (RGSV, Tenuivirus) recently emerged on rice in Vietnam, causing high yield losses during 2006–2009. The genetic diversity of RGSV is poorly documented. In this study, the two genes encoded by each ambisense segment RNA3 and RNA5 of RGSV isolates from six provinces of South Vietnam were sequenced. P3 and Pc3 (RNA3) have unknown function, P5 (RNA5) encodes the putative silencing suppressor, and Pc5 (RNA5) encodes the nucleocapsid protein (N). The sequences of 17 Vietnamese isolates were compared with reference isolates from North and South Philippines. The average nucleotide diversity among the isolates was low. We confirmed a higher variability of RNA3 than RNA5 and Pc3 than P3. No relationships between the genetic diversity and the geographic distribution of RGSV isolates could be ascertained, likely because of the long-distance migration of the insect vector. This data will contribute to a better understanding on the RGSV epidemiology in South Vietnam, a prerequisite for further management of the disease and rice breeding for resistance.

Mots-clés libres : Nucleocapsid Protein, Mekong Delta, Rice Stripe Virus, Silence Suppressor, EMBL Nucleotide Sequence Database

Agences de financement hors UE : Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Institut de Recherche pour le Développement, King Abdullah University of Science and Technology

Auteurs et affiliations

• Ta Hoang-Anh, PPRI (VNM)
• Nguyen Doan-Phuong, PPRI (VNM)
• Causse Sandrine, IRD (FRA)
• Nguyen Thanh Duc, Agricultural Genetics Institute (VNM)
• Ngo Vinh-Vien, IRD (FRA)
• Hebrard Eugénie, IRD (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/604371/)

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