Cheng Kai-Wen, Yang Jiue-In, Srimongkol Piroonporn, Stadler Marc, Karnchanatat Aphichart, Ariyawansa Hiran A
Department of Plant Pathology and Microbiology, National Taiwan University, Taipei City, Taiwan.
Department of Nematology, University of California, Riverside, CA 92521, USA.
IMA Fungus. 2025 Jun 27;16:e155308. doi: 10.3897/imafungus.16.155308. eCollection 2025.
Serpentine soils are predominantly distributed along the Circum-Pacific margin and the Mediterranean, including eastern Taiwan. These soils are characterized by high levels of heavy metals, including nickel and chromium, and a low calcium-to-magnesium ratio, creating a unique environment that fosters microorganisms with specialized traits. In this study, culture-dependent isolation methods were used to elucidate the composition of culturable fungal communities in serpentine-characterized paddy fields in eastern Taiwan. A total of 154 fungal isolates were isolated from serpentine paddy fields in eastern Taiwan. These isolates were grouped into 79 strains based on colony morphology and were subsequently evaluated through morphological and multi-locus phylogenetic analyses. The results revealed that 60% of the strains belong to the class , followed by 21% in and 19% in . At the genus level, was the dominant genus, presenting 35% of the total of isolated strains, followed by (20%), (19%), and (8%). The study reports 11 novel species: , , , , , , , , , , and Additionally, 11 known species are reported for the first time in Taiwan: , , , , , , , , , , and . In addition, this study presents the first documented asexual morph within the genus , represented by . These discoveries will be valuable for future evaluations of the potential uses and functions of these species as bioremediation agents.
蛇纹岩土主要分布在环太平洋边缘和地中海地区，包括台湾东部。这些土壤的特点是重金属含量高，包括镍和铬，且钙镁比低，营造了一个独特的环境，有利于具有特殊性状的微生物生长。在本研究中，采用依赖培养的分离方法来阐明台湾东部具有蛇纹岩特征的稻田中可培养真菌群落的组成。从台湾东部的蛇纹岩稻田中总共分离出154株真菌分离物。根据菌落形态将这些分离物分为79个菌株，随后通过形态学和多位点系统发育分析进行评估。结果显示，60%的菌株属于 纲，其次是 纲的占21%， 纲的占19%。在属的水平上， 是优势属，占分离菌株总数的35%，其次是 （20%）、 （19%）和 （8%）。该研究报道了11个新物种： 、 、 、 、 、 、 、 、 、 、 和 。此外，11个已知物种首次在台湾被报道： 、 、 、 、 、 、 、 、 、 、 和 。此外，本研究首次报道了 属内以 为代表的无性型。这些发现对于未来评估这些物种作为生物修复剂的潜在用途和功能具有重要价值。
