菌物学报2025，Vol.44Issue(10)：19-30,12.DOI:10.13346/j.mycosystema.250116
我国节担菌资源及四个种的生物学特性初探
A preliminary investigation on species diversity of Wallemia in China and biological characteristics of four species of the genus
摘要
Abstract
The genus Wallemia comprises a group of filamentous fungi known for their halophilic and xerophilic properties,allowing them to colonize low-water-activity habitats.Research on Wallemia species diversity in China remains limited,with only two species having been previously documented.This study aims at enhancing the understanding of Wallemia species diversity in China through isolating and identifying strains from diverse ecological regions.As a result,62 strains were isolated from 12 provinces and six species,Wallemia canadensis,Wallemia hederae,Wallemia mellicola,Wallemia muriae,Wallemia sebi,and Wallemia tropicalis,were identified based on phylogenetic analysis.Among which the former four species were reported in China for the first time.The culture conditions of the representative strains of the four species(W.canadensis ZYJ2333,W.mellicola ZYJ2331,W.muriae ZYJ2345,and W.sebi ZYJ2323)were optimized using single-factor experiments combined with response surface methodology.The results demonstrated that the growth of the strains was optimal at 24.9℃,pH 5.2,and 5.8％-6.4％NaCl.The NaCl concentration exhibiting the most significant influence on fungal growth.In chaotropic tolerance assays,Wallemia strains maintained growth in solutions containing 3.5 mol/L MgSO4 or 1.4-1.8 mol/L MgCl2,highlighting their exceptional tolerance to ionic stress.Wallemia resources in China and efficient cultivation of the species have need of further research.关键词
节担菌/资源收集/生物学特性/离液耐受性Key words
Wallemia/resource collection/biological characteristics/chaotropic tolerance引用本文复制引用
邢汇佼,杨雅暄,李佳妮,张姝,张永杰..我国节担菌资源及四个种的生物学特性初探[J].菌物学报,2025,44(10):19-30,12.基金项目
农业农村部农业微生物资源收集与保藏重点实验室开放基金项目(KLMRCP2023-01) （KLMRCP2023-01）
山西省基础研究计划(202203021221036) （202203021221036）
山西省"三晋英才"计划 This work was supported by the Key Laboratory of Microbial Resources Collection and Preservation of the Ministry of Agriculture and Rural Affairs Open Fund Project(KLMRCP2023-01),the Basic Research Program of Shanxi Province(202203021221036),and the"Sanjin Talents"Plan of Shanxi Province. （KLMRCP2023-01）
