Alternaria yunnanensis sp. nov., a New Alternaria Species Causing Foliage Spot of Rubber Tree in China

A new species of Alternaria causing leaf spots on the rubber tree (Hevea brasiliensis) in Yunnan, China, was isolated, examined, and illustrated. Morphologically, it belongs to the section Porri of Alternaria, which produces relatively large conidia and a simple or branched, filamentous long beak. I...

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Published in:Mycobiology 2019, 47(1), , pp.66-75
Main Authors: Cai, Zhi-Ying, Liu, Yi-Xian, Shi, Yu-Ping, Dai, Li-Ming, Li, Lan-Lan, Mu, Hong-Jun, Lv, Mei-Lin, Liu, Xiao-yong
Format: Article
Language:English
Subjects:
Alternaria yunnanensis
Ascomycota
morphology
multi-loci molecular phylogeny
taxonomy
생물학
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Summary:A new species of Alternaria causing leaf spots on the rubber tree (Hevea brasiliensis) in Yunnan, China, was isolated, examined, and illustrated. Morphologically, it belongs to the section Porri of Alternaria, which produces relatively large conidia and a simple or branched, filamentous long beak. It is, however, characterized by conidiophores gradually enlarging near the apex into a clavate conidiogenous cell and long ellipsoid to obclavate, smooth-walled conidia with a long filamentous beak. Molecular phylogenetic analyses based on ITS rDNA, GAPDH, and TEF1-alpha sequences demonstrate that the phytopathogen falls in the clade of the section Porri, being most closely related to A. sidae, A. sennae, A. deseriticola, A. cyamopsidis, A. rostellata, A. nitrimali, A. crassa, and A. thunbergiae.
ISSN:1229-8093
2092-9323
DOI:10.1080/12298093.2019.1575584