Gao Ying, Zhong Tingfang, Eungwanichayapant Prapassorn Damrongkool, Jayawardena Ruvishika S, Hyde Kevin D, Faraj Turki Kh, Wanasinghe Dhanushka N, Gui Heng
School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
MycoKeys. 2024 Oct 10;109:239-263. doi: 10.3897/mycokeys.109.134136. eCollection 2024.
During our investigation of microfungi on grasslands in Yunnan Province, China, three new fungal taxa associated with grasses were collected. Morphological observations and phylogenetic analyses of the combined SSU, LSU, ITS, , and loci based on maximum likelihood and Bayesian inference were used to reveal the taxonomic placement of these fungal taxa. This study introduces , , is characterized by ampulliform or globose to subglobose conidiogenous cells, with conidia that are cylindrical to subcylindrical, 0-1-septate, rounded at the apex and slightly truncate at the base. features similar globose to subglobose conidiogenous cells but with 0-3-septate, cylindrical to subcylindrical conidia. is distinguished by its globose to subglobose conidiogenous cells and phragmosporous conidia that are initially hyaline, turn pale yellowish at maturity, and are 7-septate, cylindrical to subcylindrical, either straight or slightly curved. These discoveries underscore the significance of exploring and accurately identifying fungal taxa within Ascomycota, highlighting the species richness and potential for new species discoveries in grass-based habitats. The findings from this study expand our understanding of the taxonomy and phylogeny of grassland-associated Ascomycota, providing a foundation for further ecological and taxonomic studies of these fungi within their natural environments.
在中国云南省草原上对微真菌进行调查期间，采集到了三种与草相关的新真菌类群。基于最大似然法和贝叶斯推断，对核糖体小亚基（SSU）、大亚基（LSU）、内转录间隔区（ITS）以及其他基因座进行联合分析，并结合形态学观察，以确定这些真菌类群的分类地位。本研究介绍了[具体名称1]，其特征为瓶形或球形至近球形的分生孢子产孢细胞，分生孢子圆柱形至近圆柱形，0至1分隔，顶端圆形，基部稍截形。[具体名称2]具有类似的球形至近球形分生孢子产孢细胞，但分生孢子有0至3个分隔，圆柱形至近圆柱形。[具体名称3]的区别在于其球形至近球形的分生孢子产孢细胞以及隔膜孢子，这些孢子最初无色透明，成熟时变为浅黄色，有7个分隔，圆柱形至近圆柱形，直或稍弯曲。这些发现强调了探索和准确鉴定子囊菌门内真菌类群的重要性，突出了以草为基础的生境中物种丰富度和新物种发现的潜力。本研究结果扩展了我们对与草原相关的子囊菌门分类学和系统发育的理解，为在其自然环境中对这些真菌进行进一步的生态学和分类学研究奠定了基础。
