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《Scientia Agricultura Sinica》 2004-01
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Molecular Genetic Studies on the Rice Blast Fungus Population DNA fingerprinting and pathotype analyses of the isolates selected from the region-specific lineages of Guangdong Province, China

PAN Qing-hua, HU Tie-zhu, WANG Ling, CAI Jiang-qiao (Laboratory of Plant Resistance and Genetics, College of Natural Resource Environment, South China Agricultural University, Guangzhou 510642)  
According to the results of the previous experiment, 27 isolates derived from the region-specific lineages of Guangdong Province (GD), were selected to analyse the relationship between pathotype and lineage using another 10 pairs of SRAP (sequence-related amplified polymorphism) primers. The phylogenetic relationships of these isolates were certainly different from those characterized by the first 10 pairs of SRAP primers in the previous study. On the other hand, pathotypes of 27 isolates were assessed with three sets of differential cultivars from China, Japan and the International Rice Research Institute (IRRI). As to the Chinese differentials, 11 pathotypes were determined, and only two pathotypes were corresponding to their lineages. As to the Japanese differentials, 22 pathotypes were determinated, and 10 pathotypes were specific to their lineages. And to the IRRI's differentials, 16 pathotypes were determinated, and 8 pathotypes were responsible to their lineages. The results from the research suggested that these isolates should be recommended as the candidate differential isolates specific to GD, because they had high diversities of genetics as well as pathogenesis. The relationship between genetic lineage and pathotype is also discussed.
【Fund】: 国家“8 63”计划资助项目 ( 2 0 0 1AA2 2 2 2 3 1);; 国家自然科学基金资助项目 ( 3 0 170 5 99);; 教育部优秀青年教师资助计划项目 ( 2 0 15号 );; 广东省农业科技攻关计划重大专项基金资助项目 ( 2 0 0 3A2 0 40 1);; 广东省自然科学基金资助项目 ( 0 0 0 5 75 0 2 1
【CateGory Index】: S435.11
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