Eight Colletotrichum Species, Including a Novel Species, Are Associated With Areca Palm Anthracnose in Hainan, China
文献类型： 外文期刊
作者： Cao, Xueren 1 ; Xu, Xiangming 2 ; Che, Haiyan 1 ; West, Jonathan S. 3 ; Luo, Daquan 1 ;
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, Hainan, Peoples R China
2.NIAB EMR, E Malting ME19 6BJ, Kent, England
3.Rothamsted Res, Harpenden AL5 2JQ, Herts, England
关键词： etiology; fungi; tropical plants
期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）
ISSN： 0191-2917
年卷期： 2020 年 104 卷 5 期
页码：
收录情况： SCI
摘要： Genus Colletotrichum is one of the most important genera of plantpathogenic fungi affecting numerous species, particularly tropical and subtropical crops and fruit trees. In this study, 43 Colletotrichum strains were isolated from areca palm leaves with anthracnose symptoms in 11 areca palm plantations in eight counties of Hainan, China. Based on the morphology, phylogenetic analysis of six loci (internal transcribed spacer, actin, chitin synthase 1, glyceraldehyde-3-phosphate dehydrogenase, p-tubulin, and mating type locus MAT1-2), and pathogenicity tests, eight Colletotrichum species were distinguished, comprising five previously known species (C. cordylinicola, C. fructicola, C. gloeosporioides, C. siamense, and C. tropicale), one unidentified Colletotrichum species, a new species (C. arecicola) in the gloeosporioides species complex, and C. karstii in the boninense species complex. C. siamense was the most common species found in areca palm in Hainan, followed by C. arecicola. Pathogenicity tests showed that all eight species could cause anthracnose symptoms on areca palm leaves using a wound inoculation method and that the isolates from the gloeosporioides species complex caused larger lesions than the isolates from the boninense species complex. Further research is needed to understand the epidemiology of these pathogenic species on areca palm in order to develop management strategies.
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