Microfungi associated with walnut trees in southwestern China

作者：FH Wang, XL Xu, Qiang Zeng, LJ Liu, Feng Liu, Ying Deng, Qun Sun, Yu Yan, Xiangyang Li, Shuai Xiang, Qi Shuai, Yungen Liu, SJ Li, Haozhe Yang, Sun Sheng Han, Lu Liu, Changfu Yang · 发表于：Mycosphere · 年份：2025 · DOI：10.5943/mycosphere/16/1/12 · 被引用次数：5 · 研究领域：Plant Pathogens and Fungal Diseases、Yeasts and Rust Fungi Studies、Plant and Fungal Interactions Research

The plant family, Juglandaceae comprises economically important tree species that are extensively cultivated worldwide, with the Juglans and Carya genera representing the largest areas of cultivation. Fungi associated with Juglandaceae plants are diverse and widespread, with about 200 walnut-related species identified in China based on around 120 fragmented references. To date, there have been few systematic studies conducted on walnut fungi in China. In this study, diseased branches, leaves, fruits, and litter showing symptoms of infection were collected to conduct an indepth investigation of Ascomycota fungi associated with walnuts in Sichuan, southwestern China. The fungi were identified through morphological analysis and multi-gene phylogenetic methods, revealing one phylum, four classes, 14 orders, 26 families, 42 genera, and 90 species among our newly collected specimens. This paper describes one new genus, Neomelanconis (Gnomoniaceae, Diaporthales), and 25 new species, including Alternaria ganziense, Aurantiascoma juglandis, Botryosphaeria gaoxianense, B. neijiangense, B. yibinense, Colletotrichum beichuanense, Co. shehongense, Cladosporium rugae, Dothiorella pugeense, Diaporthe mianyangense, Juglanconis magnatum, J. mucosporium, Kirschsteiniothelia yantingense, Lasiodiplodia chongzhouense, L. juglans, Nectria fusiformispora, Neomelanconis juglandis, Neofusicoccum juglans, Neof. wenchuanense, Ophiognomonia pseudopterocaryae, Paraeutypella neijiangense, Periconia yantin...