Diversity of ascomycetes in Yunnan, China


Yunnan is one of the world’s richest biodiversity hotspots, maintaining an extremely high diversity of microfungi. However, the studies of microfungi in this province are still poorly documented. From the last decade, many mycologists attempt to improve the accurate species number of microfungi in Yunnan Province, China based on morphological characteristics and multigene phylogenetic analyses or other polyphasic approaches. Since 2015, saprobic and pathogenic ascomycetes have been collected from various plants (e.g., Acer, Artemisia, Caragana, Cirsium, Cycas, Liriope, Lonicera, Mangifera, Pinus, Thysanolaena, and Zea mays) in both aquatic and terrestrial habitats. The samples were collected from Baoshan, Honghe, Kunming, Lijiang, and Xishuangbanna in Yunnan during wet and dry seasons. Based on multigene phylogenetic analyses, six new genera and 25 new species are introduced from Yunnan, Additionally, a reference specimen for Tamsiniella labiosa, the sexual-asexual morph connection of Plenodomus sinensis, and new records on hosts and distributions in Yunnan for Amarenomyces dactylidis, Muyocopron lithocarpi, Periconia cortaderiae, Phragmocamarosporium hederae, and Sphaerellopsis paraphysata are reported. Furthermore, 205 saprobic fungi were isolated from tree fern and other fern species, and 140 endophytic fungi were also isolated from tree fern. Preliminary analysis based on ITS sequence data showed 83 saprobic species belong to 39 genera viz. Amarenomyces, Anthostomella, Arthrinium, Bipolaris, Botryosphaeria, Cladosporium, Collarispora, Colletotrichum, Coniothyrium, Cyphellophora, Cytospora, Diaporthe, Diatrypella, Didymosphaeria, Dothidea, Fracchiaea, Glonium, Harzia, Kramasamuha, Lophiostoma, Lophiotrema, Microthyrium, Monilochaetes, Myxospora, Nectria, Nigrospora, Paratrimmatostroma, Periconia, Pestalotiopsis, Phaeoacremonium, Pithomyces, Plenodomus, Sardiniella, Spegazzinia, Terriera, Torula, Trichothecium, Vermiculariopsiella, and Xylaria. The other 140 isolates of endophytic fungi belonging to 26 genera viz. Arthrinium, Asterocalycella, Botryosphaeria, Byssochlamys, Cladosporium, Clonostachys, Colletotrichum, Cytospora, Daldinia, Diaporthe, Didymella, Epicoccum, Fusarium, Kretzschmaria, Lasiodiplodia, Neofusicoccum, Nigrospora, Nothophoma, Pestalotiopsis, Pezicula, Phoma, Phyllosticta, Plenodomus, Pseudopestalotiopsis, Trametes, Veronaea, and Xylaria. The species number of ascomycetes discovered in this area (more than 80 discovered species) indicated a high diversity of microfungi in Yunnan.

Speaker: Dr. Rungtiwa Phookamsak

Affiliation: Kunming Institute of Botany, Chinese Academy of Sciences

Time: Dec. 14, 2021

Venue: 瞩目会议平台 会议 ID:135 871 8714  会议密码 PWD:666666 

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