Genetic Analysis of Colletotrichum siamense Populations from Different Hosts and Counties in Hainan, China, Using Microsatellite Markers
文献类型： 外文期刊
作者： Cao, Xueren 1 ; Zhang, Qun 2 ; He, Yongxiang 3 ; Che, Haiyan 1 ; Lin, Yating 1 ; Luo, Daquan 1 ; West, Jonathan S. 4 ; Xu, Xiangming 5 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, Minist Agr, Haikou 571101, Peoples R China
2.Chinese Acad Trop Agr Sci, Anal & Test Ctr, Haikou 571101, Peoples R China
3.Hainan Univ, Coll Plant Protect, Haikou 570228, Peoples R China
4.Rothamsted Res, Harpenden AL5 2JQ, England
5.NIAB EMR, New Rd, East Malling, Kent ME19 6BJ, England
关键词： fungi; pathogen diversity; tropical plants
期刊名称：PLANT DISEASE （ 影响因子：4.5； 五年影响因子：5.0 ）
ISSN： 0191-2917
年卷期： 2023 年 107 卷 1 期
页码：
收录情况： SCI
摘要： Colletotrichum siamense was demonstrated as the dominant species among Colletotrichum spp. that infected rubber tree, areca palm, and coffee in Hainan, China. However, the extent of genetic differentiation within the species C. siamense in relation to geographical regions and host species is not known. In this study, 112 C. siamense isolates were genotyped with 12 microsatellite markers. In total, there were 99 multilocus genotypes. Results from permutational multivariate analysis of variance and analysis of molecular variance indicated that there was no significant genetic differentiation between fungal populations with respect to host, location (county), and year. Discriminant analysis of principal components and STRUCTURE analysis showed that C. siamense isolates grouped into three clusters; further analysis confirmed that there were significant (P < 0.001) genetic differences among the three clusters. However, each cluster had isolates from different hosts, counties, or years, supporting the lack of genetic differentiation with respect to host, county, and year. Statistical analyses of allelic associations indicated some evidence for recombination within the populations defined on the basis of host or county. The present findings provide insights into the genetic structure of C. siamense on the three perennial host species in Hainan and suggest that the disease on these three crops can be effectively considered as one disease and, hence, needs to be controlled simultaneously in mixed plantations.
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