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真菌参与生物土壤结皮(biological soil crusts,BSCs)的形成,在荒漠化土壤植被恢复中起着举足轻重的作用。本文通过构建真菌18S rDNA文库,分析了毛乌素沙漠BSCs真菌群落组成特征。结果表明:毛乌素沙地BSC s中真菌组成分为两大类群,子囊菌门和担子菌门,子囊菌门占了全部真菌总数的58%,担子菌门占全部真菌的42%。子囊菌门分别有Boeremia、Phaeosphaeria、Trematosphaeria、Dendryphion、Paraconiothyrium、Cryomyces、Davidiellaceae、Fu-sarium、Chaetomium、Coniosporium属。担子菌门的有Cryptococcus、Laetisaria、Rhizoctonia、Malassezia 4个属。本研究对BSCs的形成、发展理论研究以及应用于植被恢复的实践具有一定意义。
Fungal involvement in the formation of biological soil crusts (BSCs) plays an important role in the restoration of desertified soil vegetation. In this paper, we constructed a fungal 18S rDNA library to analyze the composition of fungal communities in BSCs in Mu Us desert. The results showed that the fungal components of BSC s in Mu Us sandy land were divided into two groups, Ascomycota and Basidiomycotina, which accounted for 58% of the total fungi and Basidiomycotina accounted for 42% of the total fungi. Ascomycota are Boeremia, Phaeosphaeria, Trematosphaeria, Dendryphion, Paraconiothyrium, Cryomyces, Davidiellaceae, Fu-sarium, Chaetomium, Coniosporium, respectively. Basidiomycetes Cryptococcus, Laetisaria, Rhizoctonia, Malassezia 4 genera. This study is of some significance to the formation and development of BSCs and their application to vegetation restoration.