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 inMycobiology Vol. 47; no. 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 Journal Article
LanguageKorean
Published 한국균학회 31.03.2019
Subjects
Ascomycota
taxonomy
morphology
Alternaria yunnanensis
multi-loci molecular phylogeny
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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, smoothwalled 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.
Bibliography:The Korean Society of Mycology
KISTI1.1003/JNL.JAKO201913649330857
ISSN:1229-8093
2092-9323