Diversity in Virulence of <I>Xanthomonas oryzae</I> pv. <I>oryzae </I>from Northern Vietnam
スポンサーリンク
概要
- 論文の詳細を見る
A survey of the geographical distribution of pathogenic races of <I>Xanthomonas oryzae </I>pv. <I>oryzae</I> (<I>Xoo</I>) causing bacterial blight (BB) of rice in northern Vietnam was conducted. We characterized strains of <I>Xoo</I> collected from nine regions in this part of Vietnam in 2001 and 2002 using polymerase chain reaction (PCR)-based DNA fingerprinting and virulence analysis. The pathogenicity of Vietnamese 84 strains was tested for their virulence to BB near-isogenic lines with a single resistance gene. Based on virulence analysis using 11 differential lines (IR24, IRBB1, IRBB2, IRBB3, IRBB4, IRBB5, IRBB 7, IRBB10, IRBB11, IRBB21 and Taichung Native 1), each harboring a single resistance gene, four pathotypes (tentatively designated as races G1 to G4) were identified. All strains were virulent to the resistance genes <I>Xa1, Xa2, Xa10, Xa11, Xa14 </I>and<I> Xa18, </I>and <I>xa5</I> and <I>Xa21 </I>were effective against a major portion of the Vietnamese <I>Xoo</I> population; followed by <I>Xa7</I>. Most of the Vietnamese hybrid and improved varieties cultivated in northern Vietnam were susceptible to all races and no Vietnamese variety was resistant to all races. Our study revealed that strains from northern Vietnam comprised two major races (G2 and G3) and two minor races (G1 and G4), which were widely distributed and detected at lower frequencies, respectively, in northern Vietnam. Seventy six strains of <I>Xoo</I> were analyzed by DNA fingerprinting using two PCR-based assays. Two groups, designated as clusters I and II, were respectively identified, in which cluster I contained race G4 strains and cluster II race G1 strains. Combining DNA and pathotype analysis, we hereby present the situation of <I>Xoo</I> recently isolated in northern Vietnam.
著者
-
Furuya Naruto
Faculty Of Agriculture Kyushu University
-
Tsuchiya Kenichi
Faculty Of Agriculture Kyushu University
-
Yoshimura Atsushi
Faculty Of Agriculture Kyushu Univ.
-
TAURA Satoru
Institute of Gene Research, Kagoshima University
-
THUY Bui
Faculty of Agronomy, Hanoi Agricultural University
-
TON Phan
Faculty of Agronomy, Hanoi Agricultural University
-
GOTO Takahiro
Research & Development Laboratory, Sanwa Shurui, Co. Ltd.
関連論文
- Genetic Diversity of Myanmar Rice Cultivars Detected by DNA markers
- Burkholderia gladioli associated with symptoms of bacterial grain rot and leaf-sheath browning of rice plants
- Bacterial Wilt of Russell Prairie Gentian Caused by Burkholderia caryophylli
- Cytogenetical gene mapping by reciprocal translocation and tertiary trisomic analyses in rice(Oryza sativa L. )
- Evaluation of Resistance in Rice Plants to Myanmar Isolates of Xanthomonas oryzae pv. oryzae
- Tillering Behavior of the Rice fine culm 1 Mutant(Crop Physiology and Ecology)
- Differentiation of Phytopathogenic Pseudomonas and Xanthomonas Pathovars and Strains by PCR Analysis for DNA Topoisomerase Genes
- Diversity of Culturable Chitinolytic Bacteria from Rhizospheres of Agronomic Plants in Japan
- Comparative Membrane Protein Characterization of Brazilian Strains of Ralstonia solanacearum
- Genetic Diversity and Ecological Evaluation of Fluorescent Pseudomonads Isolated from the Leaves and Roots of Potato Plants
- Mapping of Bacterial Blight Resistance Gene Xa11 on Rice Chromosome 3
- Diversity in Virulence of Xanthomonas oryzae pv. oryzae from Northern Vietnam
- Biological Control of Xanthomonas Oryzae pv. Oryzae Causing Rice Bacterial Blight Disease by Streptomyces toxytricini VN08-A-12, Isolated from Soil and Leaf-litter Samples in Vietnam