Diversity of halotolerant fungi isolated from Qinghai Lake based on culture-dependent investigation
分离自青海湖可培养耐盐真菌的多样性研究

Qinghai Lake,a typical depositional salt lake,is located in the northeast of Qinghai-Tibet Plateau.In this paper,halotolerant fungi of Qinghai Lake were investigated by traditional culture-dependent methods.Totally,617 fungal cultures were isolated from different regions which named as Heima Lake,Erhai and Gahai in Qinghai Lake.They were assigned to 18 genera and 45 species based on morphological and molecular characteristics.The number of isolates of Ascomycetes was larger than that of Basidiomycetes and Zygomycetes,and the most abundant genera were Cladosporium and Penicillium.19 species and 25 species were the slight halophiles and moderate halophiles,respectively,while only one species was extreme halophiles.The all values of Ma(3.12),H’(1.11) and J(0.267) of halophiles isolated from Heima Lake were larger than those of Erhai and Gahai in all salinity;the all values of Ma(3.04),H’(1.13) and J(0.293) of halophiles isolated from 1.5% salinity were higher than those from 10% and 30% salinity,and the H’(1.13) and J(0.276) of halophiles isolated from water samples were higher than those from the mud and soil,while the Ma(3.10) of halophiles isolated from water samples was lower than that from mud.This is a systematic report on the diversity of halotolerant fungi from Qinghai Lake by culture-dependent methods.