Population structure of Phytophthora infestans in China - geographic clusters and presence of the EU genotype Blue_13
文献类型: 外文期刊
第一作者: Huang, S. W.
作者: Huang, S. W.;van der Lee, T.;Kessel, G.;Zhu, J. H.;Jin, G. H.;Lan, C. Z.;Zhu, S. X.;Jacobsen, E.;Zhang, R. F.;Liu, B. W.;Zhao, Z. J.
作者机构:
关键词: Blue_13;China;clonal lineage;genotyping;late blight;population structure
期刊名称:PLANT PATHOLOGY ( 影响因子:2.59; 五年影响因子:2.924 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The population structure of Phytophthora infestans in China was studied and three mitochondrial haplotypes (Ia, IIa, IIb) were observed. Genetic analysis with 10 highly informative SSR markers identified 68 different genotypes, including three dominant clonal lineages. In the Chinese P. infestans population, the genotypes were strongly clustered according to their geographic origin. One of dominant clonal lineages was genetically similar to Blue_13, a dominant clonal lineage found in Europe since 2004. This is the first report of Blue_13 outside Europe. Only one mating type (A1) was found in the northern and southeastern provinces, but in southern and northwestern China both mating types were observed. The mating type ratio and SSR allele frequencies indicate that in China the sexual cycle of P. infestans is rare. These results emphasize that the migration of asexual propagules and the generation of subclonal variation are the dominant driving factors of the population structure of P. infestans in China. They may also have implications for the role of monitoring P. infestans populations in potato late blight management strategies in China.
分类号: S432.1
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