Whole genome resequencing reveal patterns of genetic variation within Colletotrichum acutatum species complex from rubber trees in China

IF 2.4 3区生物学 Q3 GENETICS & HEREDITY

Fungal Genetics and Biology Pub Date : 2023-06-01 DOI:10.1016/j.fgb.2023.103801

Xianbao Liu, Boxun Li, Jimiao Cai, Tao Shi, Yang Yang, Yanli Feng, Guixiu Huang

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引用次数: 1

Abstract

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 taxonomic 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 undetermined. 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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全基因组重测序揭示了中国橡胶树炭疽菌(Colletotrichum actuatum)种复合体的遗传变异模式

尖锐炭疽病菌(Colletotrichum acutatum)具有广泛的寄主范围和寄主偏好、不同的繁殖模式和不同的寄主感染策略等重要特征。利用比较基因组学的研究试图找到这些特征之间的相关性。本文以橡胶树为研究对象，采用多位点技术和基因系谱一致性分析方法，研究了尖锐炭疽菌(Colletotrichum acutatum)种群的系统发育关系和分类地位。结果表明，优势种为C. australisinense，其次为C. bannaense，菌株YNJH17109为C. laticiphilum。菌株YNLC510和YNLC511的分类地位尚未确定。利用全基因组单核苷酸多态性分析，将18株澳大利亚血吸虫分成4个居群，其中一个居群来源于两个居群的杂交。此外，菌株LD1687、GD1628和YNLC516不属于任何群体，被认为是两个或两个以上群体的混种。分裂分解网络分析也为中国橡胶树中尖锐炭疽病种复合体的遗传重组提供了证据。总体而言，观察到一个弱的系统地理亚结构。分析还揭示了种群间形态特征和毒力水平的显著差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fungal Genetics and Biology 生物-遗传学

CiteScore

6.20

自引率

3.30%

发文量

审稿时长

85 days

期刊介绍： Fungal Genetics and Biology, formerly known as Experimental Mycology, publishes experimental investigations of fungi and their traditional allies that relate structure and function to growth, reproduction, morphogenesis, and differentiation. This journal especially welcomes studies of gene organization and expression and of developmental processes at the cellular, subcellular, and molecular levels. The journal also includes suitable experimental inquiries into fungal cytology, biochemistry, physiology, genetics, and phylogeny. Fungal Genetics and Biology publishes basic research conducted by mycologists, cell biologists, biochemists, geneticists, and molecular biologists. Research Areas include: • Biochemistry • Cytology • Developmental biology • Evolutionary biology • Genetics • Molecular biology • Phylogeny • Physiology.