High Genetic Diversity and Species Complexity of Diaporthe Associated With Grapevine Dieback in China
文献类型： 外文期刊
作者： Manawasinghe, Ishara S. 1 ; Dissanayake, Asha J. 1 ; Li, Xinghong 1 ; Liu, Mei 1 ; Wanasinghe, Dhanushka N. 2 ; Xu, 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing Key Lab Environm Friendly Management Frui, Beijing, Peoples R China
2.Mae Fah Luang Univ, Ctr Excellence Fungal Res, Mueang Chiang Rai, Thailand
3.Univ Elect Sci & Technol China, Ctr Bioinformat, Sch Life Sci & Technol, Chengdu, Sichuan, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
5.McMaster Univ, Dept Biol, Hamilton, ON, Canada
6.China Agr Univ, Coll Plant Protect, Beijing, Peoples R China
关键词： novel species; new host record; network analysis; phylogeography; phomopsis
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： Grapevine trunk diseases have become one of the main threats to grape production worldwide, with Diaporthe species as an emerging group of pathogens in China. At present, relatively little is known about the taxonomy and genetic diversity of Chinese Diaporthe populations, including their relationships to other populations worldwide. Here, we conducted an extensive field survey in six provinces in China to identify and characterize Diaporthe species in grape vineyards. Ninety-four isolates were identified and analyzed using multi-locus phylogeny. The isolates belonged to eight species, including three novel taxa, Diaporthe guangxiensis (D. guangxiensis), Diaporthe hubeiensis (D. hubeiensis), Diaporthe viniferae (D. viniferae), and three new host records, Diaporthe gulyae (D. gulyae), Diaporthe pescicola (D. pescicola), and Diaporthe unshiuensis (D. unshiuensis). The most commonly isolated species was Diaporthe eres (D. eres). In addition, high genetic diversity was observed for D. eres in Chinese vineyards. Haplotype network analysis of D. eres isolates from China and Europe showed a close relationship between samples from the two geographical locations and evidence for recombination. In comparative pathogenicity testing, D. gulyae was the most aggressive taxon, whereas D. hubeiensis was the least aggressive. This study provides new insights into the Diaporthe species associated with grapevines in China, and our results can be used to develop effective disease management strategies.
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