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Issue: Vol. 439 No. 3: 20 April 2020
Type: Article
Published: 2020-04-20
DOI: 10.11646/phytotaxa.439.3.7
Page range: 255–264
Abstract views: 36
PDF downloaded: 2

Alternaria vicatiae sp. nov. (Ascomycota: Pleosporaceae) Isolated from Vicatia thibetica in China

Department of Plant Protection, College of Agriculture, Yangtze University, Jing zhou 434025, China Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China
Department of Plant Protection, College of Agriculture, Yangtze University, Jing zhou 434025, China Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China
Department of Plant Protection, College of Agriculture, Yangtze University, Jing zhou 434025, China Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China
Department of Plant Protection, College of Agriculture, Yangtze University, Jing zhou 434025, China Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China
Gansu University of Chinese Medicine, Lanzhou 730000, China.
Department of Plant Protection, College of Agriculture, Yangtze University, Jing zhou 434025, China Forewarning and Management of Agricultural and Forestry Pests, Hubei Engineering Technology Center, Yangtze University, Jingzhou 434025, China
Umbelliferae Morphology Phylogenetic analyses Taxonomy Fungi

Abstract

An Alternaria species was isolated from necrotic leaves of Vicatia thibetica in Hezheng county, Linxia Hui Autonomous Prefecture, Gansu, China. It was identified based on phylogenetic analyses and morphological characteristics. Five gene regions were used to determine its molecular phylogeny, including regions of internal transcribed spacer rDNA (ITS), translation-elongation factor 1 alpha (EF-1ɑ), glyceraldehydes-3-phosphate dehydrogenase (GAPDH), Alternaria major allergen (Alt a 1) and RNA polymerase second largest subunit (RPB2). The fungus was a novel species falling into a monoclade in the section Porri of Alternaria. Morphologically, it was considered as a new species with smaller conidial body and longer beak when compared with the similar species (A. dauci, A. herbiculinae, A. poonensis and A. saposhnikoviae). Based on both approaches, the fungus was demonstrated here as a new species, Alternaria vicatiae sp. nov..