Emergence of Southern Rice Black-Streaked Dwarf Virus in the Centuries-Old Chinese Yuanyang Agrosystem of Rice Landraces

Southern rice black-streaked dwarf virus (SRBSDV), which causes severe disease symptoms in rice ( L.) has been emerging in the last decade throughout northern Vietnam, southern Japan and southern, central and eastern China. Here we attempt to quantify the prevalence of SRBSDV in the Honghe Hani rice...

Full description

Saved in:
Bibliographic Details
Published in:Viruses 2019-10, Vol.11 (11), p.985-13
Main Authors: Alonso, Pascal, Gladieux, Pierre, Moubset, Oumaima, Shih, Pei-Jung, Mournet, Pierre, Frouin, Julien, Blondin, Laurence, Ferdinand, Romain, Fernandez, Emmanuel, Julian, Charlotte, Filloux, Denis, Adreit, Henry, Fournier, Elisabeth, Ducasse, Aurélie, Grosbois, Vladimir, Morel, Jean-Benoit, Huang, Huichuan, Jin, Baihui, He, Xiahong, Martin, Darren P, Vernière, Christian, Roumagnac, Philippe
Format: Article
Language:English
Subjects:
Agricultural sciences
Cultural heritage
Disease
Dwarf disease
honghe hani rice terraces system
host genotyping
Life Sciences
Rice
southern rice black-streaked dwarf virus
virus emergence
virus prevalence
Viruses
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Southern rice black-streaked dwarf virus (SRBSDV), which causes severe disease symptoms in rice ( L.) has been emerging in the last decade throughout northern Vietnam, southern Japan and southern, central and eastern China. Here we attempt to quantify the prevalence of SRBSDV in the Honghe Hani rice terraces system (HHRTS)-a Chinese 1300-year-old traditional rice production system. We first confirm that genetically diverse rice varieties are still being cultivated in the HHRTS and categorize these varieties into three main genetic clusters, including the modern hybrid varieties group (MH), the Hongyang improved modern variety group (HY) and the traditional landraces group (TIL). We also show over a 2-year period that SRBSDV remains prevalent in the HHRTS (20.1% prevalence) and that both the TIL (17.9% prevalence) and the MH varieties (5.1% prevalence) were less affected by SRBSDV than were the HY varieties (30.2% prevalence). Collectively we suggest that SRBSDV isolates are freely moving within the HHRTS and that TIL, HY and MH rice genetic clusters are not being preferentially infected by particular SRBSDV lineages. Given that SRBSDV can cause 30-50% rice yield losses, our study emphasizes both the need to better monitor the disease in the HHRTS, and the need to start considering ways to reduce its burden on rice production.
ISSN:1999-4915
1999-4915
DOI:10.3390/v11110985