青海两盐湖细菌多样性研究

用DGGE法和纯培养法，对青海柯柯盐湖、茶卡盐湖底泥及周边土壤样品的细菌多样性进行了研究。结果显示，两个盐湖存在大量的未知细菌, 分离到的纯培养仅占实有细菌的小部分。采用多相分类方法，鉴定了12株纯培养细菌，属5个可能的新种，另有一株菌可能成立一个新属。认为提出新思路、设计新程序，从自然极端环境取样，分离未知菌，是微生物资源开发利用的关键之一。

Bacterial Diversity of Two Salt Lakes in Qinghai

Bacterial diversities of salt lakes Chaka and Keke in Qinghai have been analyzed by using conventional cultivation methods and one culture independent method (DGGE). Results showed that large amount of unknown microorganisms exist in these two lakes, isolated strains account for only a small portion of species diversity. Twelve isolates were identified with polyphasic taxonomic methods, and classified into five potential novel species and one new genus. Designing new strategies for isolation of as yet uncultured microorganisms from natural extreme environments is the key step to exploit microbial resources.