Characteristics and distribution of Colletotrichum species in coffee plantations in Hainan, China

A - Papers appearing in refereed journals

Cao, X. R., Xu, X. M., Che, H. Y., West, J. S. and Luo, D. Q. 2019. Characteristics and distribution of Colletotrichum species in coffee plantations in Hainan, China. Plant Pathology. 68 (6), pp. 1146-1156.

AuthorsCao, X. R., Xu, X. M., Che, H. Y., West, J. S. and Luo, D. Q.
Abstract

Anthracnose caused by Colletotrichum species is a serious disease on a range of economically important hosts. To determine the Colletotrichum species in coffee plantations in Hainan, China, 55 isolates were obtained from Coffea arabica (arabica) and C. canephora var. robusta (robusta) in five counties. Initially, partial sequences of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) were used to measure fungal genetic diversity. Then a subset of 23 isolates
was selected to represent the range of genetic diversity, varieties and geographic origin for further multilocus phylogenetic analyses. These isolates belong to eight known Colletotrichum species from three Colletotrichum species complexes, including gloeosporioides (C. endophytica, C. fructicola, C. ledongense, C. siamense and C. tropicale), boninense (C. karstii), gigasporum (C. gigasporum), and one singleton species (C. brevisporum). Of these, C. siamense was isolated in all sampled counties and C. fructicola was identified in three counties. The other six species were isolated only in one or two counties. Only C. siamense and C. fructicola were isolated from arabica, whereas all eight species were isolated from robusta. Occurrence of C. brevisporum, C. endophytica, C. ledongense and C. tropicale in coffee has not been reported previously. Pathogenicity tests showed that all eight species were pathogenic to coffee leaves and fruit. In vitro tests showed that Colletotrichum isolates from coffee in Hainan were most sensitive to
prochloraz, less sensitive to carbendazim, propiconazole and difenoconazole, and least sensitive to myclobutanil.

KeywordsCoffee; Colletotrichum species; Morphological analysis; Multilocus phylogenetic analysis; Pathogenicity
Year of Publication2019
JournalPlant Pathology
Journal citation68 (6), pp. 1146-1156
Digital Object Identifier (DOI)doi:10.1111/ppa.13028
Web address (URL)https://onlinelibrary.wiley.com/doi/10.1111/ppa.13028
Open accessPublished as non-open access
Funder project or code2018YFD0201100
FunderNational Key Research and Development Program of China
Biotechnology and Biological Sciences Research Council
Output statusPublished
Publication dates
Online02 May 2019
Publication process dates
Accepted09 Apr 2019
Copyright licensePublisher copyright
PublisherWiley
ISSN0032-0862

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