菌物学报2025，Vol.44Issue(11)：1-15,15.DOI:10.13346/j.mycosystema.250172
西藏中华暗球腔菌:分离自青藏高原普若岗日冰川的暗球腔菌科一新属新种
Sinophaeosphaeria xizangensis gen.et sp.nov.,a novel hyphomycetous fungus in the family Phaeosphaeriaceae isolated from the Puruogangri Glacier,Qinghai-Xizang Plateau
摘要
Abstract
During a study of fungal diversity in the Puruogangri Glacier ecosystem on the Qinghai-Xizang Plateau,a strain was isolated from soil samples at the glacier forefields using the dilution plate method,and identified as Sinophaeosphaeria xizangensis gen.et sp.nov.Morphological analysis revealed that the fungus produced olive to olive-brown conidia on PDA medium.The conidia consist of two or more cells,arranged in curved or irregular chains.Some cells slightly swollen,forming distinctly prominent bulging regions or aggregating into dense,hammer-shaped structures.Phylogenetic analyses based on five genetic loci,including internal transcribed spacer(ITS),large subunit ribosomal DNA(LSU),small subunit ribosomal DNA(SSU),RNA polymeraseⅡsecond largest subunit(rpb2),and translation elongation factor 1-α(tef1-α),indicate that this fungus represents a previously undescribed lineage within the family Phaeosphaeriaceae.This genus is located at the base of a branch that includes Paraloratospora,Loratospora,Wingfieldomyces and Sulcispora,revealing its unique evolutionary position.关键词
冰川真菌/新属/暗球腔菌科/格孢腔菌目/分类学Key words
glacier fungi/new genus/Phaeosphaeriaceae/Pleosporales/taxonomy引用本文复制引用
钱志秀,赵琪,于凤明,刘勇勤..西藏中华暗球腔菌:分离自青藏高原普若岗日冰川的暗球腔菌科一新属新种[J].菌物学报,2025,44(11):1-15,15.基金项目
This work was supported by the Second Xizang Plateau Scientific Expedition and Research Program(2024QZKK02010303)and the Second Qinghai-Xizang Plateau Scientific Expedition and Research(STEP)Program(2019QZKK0503). （2024QZKK02010303）
