首页 | 本学科首页   官方微博 | 高级检索  
     检索      

稻瘟病菌群体的分子遗传学研究——广东省与云南省稻瘟病菌群体遗传及致病型结构的比较分析
引用本文:吴伟怀,王玲,程贯忠,朱有勇,潘庆华.稻瘟病菌群体的分子遗传学研究——广东省与云南省稻瘟病菌群体遗传及致病型结构的比较分析[J].中国农业科学,2004,37(5):675-675.
作者姓名:吴伟怀  王玲  程贯忠  朱有勇  潘庆华
作者单位:1. 华南农业大学资源环境学院植物抗病遗传学研究室,广州,510642
2. 云南农业大学云南植物病理学实验室,昆明,650201
基金项目:国家863计划资助项目(2001AA222231),国家自然科学基金资助项目(30170599),教育部优秀青年教师资助计划资助项目(2015号),广东省自然科学基金资助项目(000575,021006),广东省农业科技攻关计划重大专项资助项(2003A20401),广东省农业厅合作基金资助项
摘    要: 通过基于SRAP标记的分子指纹分析法对由广东省和云南省各40个菌株构成的试验群体进行了遗传结构分析。在相似性系数取0.83时,80个供试菌株被分为25个宗谱;其中广东群体9个宗谱,宗谱频率为22.5%;云南群体16个宗谱,宗谱频率为40.0%,由此说明,后者比前者的遗传多样性高。有趣的是,在25个宗谱中并不存在两个群体共有的宗谱,由此推测它们之间存在明显的遗传特异性或异质性。另一方面,利用中国、日本和IRRI的3套鉴别品种分别对80个供试菌株进行了致病型结构分析。结果表明,在上述3套鉴别品种中,广东群体分别

关 键 词:稻瘟病菌  遗传多样性  遗传特异性  致病型多样性  致病型特异性

Studies on Molecular Genetics of Rice Blast Fungus Population--Comparison of Genetic and Pathotypic Structures of Two Rice Blast Fungus Populations Derived from Guangdong and Yunnan Provinces of China
WU Wei-huai,WANG Ling,CHENG Guan-zhong,ZHU You-yong,PAN Qing-hua.Studies on Molecular Genetics of Rice Blast Fungus Population--Comparison of Genetic and Pathotypic Structures of Two Rice Blast Fungus Populations Derived from Guangdong and Yunnan Provinces of China[J].Scientia Agricultura Sinica,2004,37(5):675-675.
Authors:WU Wei-huai  WANG Ling  CHENG Guan-zhong  ZHU You-yong  PAN Qing-hua
Institution:WU Wei-huai1,WANG Ling1,CHENG Guan-zhong1,ZHU You-yong2,PAN Qing-hua1
Abstract:Genetic structure of the rice blast fungus population, which is composed of two subpopulations and eachconsists of 40 isolates derived from Guangdong (GD) and Yunnan (YN) Provinces of China, was characterized by SRAP(sequence-related amplified polymorphism) marker-based DNA fingerprinting. A total of 80 isolates were divided into 25genetic lineages at similarity coefficient of 0.83. Among the 25 lineages, 9 and 16 lineages were belong to GD and YNsubpopulations, respectively, indicating that genetic diversity of YN subpopulation is certainly higher than that of GDsubpopulation. Interestingly, there is no any common lineage to both subpopulations, indicating that there is a high geneticspecificity / heterogenecity between the two subpopulations. On the other hand, pathotypic structures of the twosubpopulations were characterized with three sets of differential cultivars constructed in China, Japan, and IRRI (InternationalRice Research Institute). By the three differential sets, 16, 30 and 20 pathotypes were detected in GD subpopulation, while12, 31 and 16 pathotypes were detected in YN subpopulation, indicating that genetic diversity can not be accounted for thepathotypic diversity presented in the two subpopulations. However, there is a high pathotypic specificity between the twosubpopulations, which is consistent with the genetic specificity characterized by the DNA fingerprinting. The results fromthis study suggest that genetic and pathotypic structures of the pathogen populations should be dissected with theirdiversity and specificity, respectively.
Keywords:Magnaporthe grisea  Genetic diversity  Genetic specificity  Pathotypic diversity  Pathotypic specificity
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《中国农业科学》浏览原始摘要信息
点击此处可从《中国农业科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号