Two new species of Diaporthe (Diaporthaceae, Diaporthales) associated with Camellia oleifera leaf spot disease in Hainan Province, China

Authors: Liu, Hong Y. Country: People's Republic of China DOI: 10.3897/mycokeys.102.113412 Published: Jan. 1, 2024 Source: MycoKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: DNA phylogeny · Topics: Plant Pathogens and Fungal Diseases, Essential Oils and Antimicrobial Activity, Phytochemistry and Biological Activities

Tea-oil tree (Camellia oleifera Abel.) is an important edible oil woody plant with a planting area over 3,800,000 hectares in southern China. Species of Diaporthe inhabit a wide range of plant hosts as plant pathogens, endophytes and saprobes. Here, we conducted an extensive field survey in Hainan Province to identify and characterise Diaporthe species associated with tea-oil leaf spots. As a result, eight isolates of Diaporthe were obtained from symptomatic C. oleifera leaves. These isolates were studied, based on morphological and phylogenetic analyses of partial ITS, cal, his3, tef1 and tub2 gene regions. Two new Diaporthe species (D. hainanensis and D. pseudofoliicola) were proposed and described herein.

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