Journal
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
Volume 59, Issue 4-5, Pages 529-534Publisher
SPRINGER
DOI: 10.1007/s00253-002-1026-4
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We bred a microbial community capable of degrading rice straw with high efficiency. The microbial community degraded more than 60% of rice straw within 4 days at 50 degreesC. The high stability of the community's degradation ability was demonstrated by its tolerance of being subcultured several times in medium with/without cellulosic material, being heated to 95 degreesC, and freezing at -80 degreesC. The community degraded both nonsterilized and sterilized substrate; and its degradation ability was not affected by pH changes in the medium (initial pH 5-9). PCR-denaturing gradient gel electrophoresis (DGGE) analyses based on 16S rDNA fragments showed that the community structure remained constant after multiple subcultures extending over 2 years. DNA sequence analyses of DGGE bands indicated the coexistence of both aerobic and anaerobic bacteria in the community.
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