Three Colletotrichum Species, Including a New Species, are Associated to Leaf Anthracnose of Rubber Tree in Hainan, China

A - Papers appearing in refereed journals

Cao, X., Xu, X., Che, H., West, J. S. and Luo, D. 2018. Three Colletotrichum Species, Including a New Species, are Associated to Leaf Anthracnose of Rubber Tree in Hainan, China. Plant Disease. 103 (1), pp. 117-124.

AuthorsCao, X., Xu, X., Che, H., West, J. S. and Luo, D.
Abstract

Colletotrichum gloeosporioides and C. acutatum have been reported to be causal agents of anthracnose disease of rubber tree. Recent investigations have shown that both C. gloeosporioides and C. acutatum are species complexes. The identities of Colletotrichum species causing anthracnose disease of rubber tree in Hainan, China, are unknown. In this study, 106 isolates obtained from rubber tree with symptoms of anthracnose were collected from 12 counties of Hainan and identified at the species complex level based on the ITS sequences and colony morphologies. Seventy-four isolates were identified as C. gloeosporioides species complex and the other 32 isolates as C. acutatum species complex. Forty-two isolates were selected for further multilocus phylogenetic analyses in order to identify the isolates to the species level. Twenty-six isolates from the C. gloeosporioides species complex were characterized for partial sequences of seven gene regions (ACT, TUB2, CHS-1, GAPDH, ITS, ApMat, and GS), and the other 16 isolates from the C. acutatum species complex for five gene regions (ACT, TUB2, CHS-1, GAPDH, and ITS). Three species were identified: C. siamense and C. fructicola from the C. gloeosporioides species complex, and a new species C. wanningense from the C. acutatum species complex. Artificial inoculation of rubber tree leaves confirmed the pathogenicity of the three species. The present study improves the understanding of species causing anthracnose on rubber tree and provides useful information for the effective control of the disease.

KeywordsFungi; Causal agent; Tropical plants; Crop type; Pathogen detection
Year of Publication2018
JournalPlant Disease
Journal citation103 (1), pp. 117-124
Digital Object Identifier (DOI)doi:10.1094/PDIS-02-18-0374-RE
PubMed ID30398958
Open accessPublished as bronze (free) open access
Funder project or codePathogen surveillance and monitoring
Output statusE-publication ahead of print
Publication dates
Online06 Nov 2018
Publication process dates
Accepted08 Jul 2018
PublisherAmerican Phytopathological Society (APS)
American Phytopathological Society (APS)
Copyright licensePublisher copyright
ISSN0191-2917

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