Microbiology research of the Chinese Continental Scientific Drilling: Isolation and identification of one bacterial strain from a 3900-meter-deep subsurface rocks
中国大陆科学钻探（CCSD）微生物研究——地下3900米一株细菌的分离与鉴定

A bacterial strain named CCSDFL3900 was isolated from a 3911. 28-meter-deep subsurface rock from the main borehole of Chinese Continent Scientific Drilling . It was Gram negative with no flagellalt has spores in the end, is immobile, facultative anaerobic, and grows optimally at 65 centigrade. Its 16S ribosome DNA was extracted and amplified with the universe primer of bacterial 16S ribosome DNA. Phylogenetic analysis results revealed that it belongs to the genus bacillus or geobacillus. Fermentation test further identified as it a strain of Bacillus caldotenax.