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


ABSTRACT: 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.

SUBMITTER: Cai ZY 

PROVIDER: S-EPMC6450485 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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

Cai Zhi-Ying ZY   Liu Yi-Xian YX   Shi Yu-Ping YP   Dai Li-Ming LM   Li Lan-Lan LL   Mu Hong-Jun HJ   Lv Mei-Lin ML   Liu Xiao-Yong XY  

Mycobiology 20190330 1


A new species of <i>Alternaria</i> causing leaf spots on the rubber tree (<i>Hevea brasiliensis</i>) in Yunnan, China, was isolated, examined, and illustrated. Morphologically, it belongs to the section <i>Porri</i> of <i>Alternaria</i>, 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 wit  ...[more]

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