Whole genome resequencing reveal patterns of genetic variation within Colletotrichum acutatum species complex from rubber trees in China
文献类型： 外文期刊
第一作者： Liu, Xianbao
作者： Liu, Xianbao;Li, Boxun;Cai, Jimiao;Shi, Tao;Yang, Yang;Feng, Yanli;Huang, Guixiu
作者机构：
关键词： Colletotrichum acutatum; Multi-locus phylogenetic analysis; Whole-genome re-sequencing; Genomic recombination; Pathogenicity profiling
期刊名称：FUNGAL GENETICS AND BIOLOGY （ 影响因子：3.0； 五年影响因子：3.3 ）
ISSN： 1087-1845
年卷期： 2023 年 167 卷
页码：
收录情况： SCI
摘要： The Colletotrichum acutatum species complex possesses a diverse number of important traits, such as a wide host range and host preference, different modes of reproduction, and different strategies of host infection. Research using comparative genomics has attempted to find correlations between these traits. Here, we used multi-locus techniques and gene genealogical concordance analysis to investigate the phylogenetic relationships and taxo-nomic status of the Colletotrichum acutatum species complex using field isolates obtained from rubber trees. The results revealed that the dominant species was C. australisinense, followed by C. bannaense, while strain YNJH17109 was identified as C. laticiphilum. The taxonomic status of strains YNLC510 and YNLC511 was un-determined. Using whole-genome single nucleotide polymorphism data to analyze population structure, 18 strains of C. australisinense were subsequently divided into four populations, one of which was derived from an admixture of two populations. In addition, the strains LD1687, GD1628, and YNLC516, did not belong to any populations, and were considered to be admixtures of two or more populations. A split decomposition network analysis also provided evidence for genetic recombination within Colletotrichum acutatum species complex from rubber trees in China. Overall, a weak phylogeographic sub-structure was observed. Analysis also revealed significant differences in morphological characters and levels of virulence between populations.
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