title: [Biodiversity of mesophilic microbial community BYND-8 capability of lignocellulose degradation and its effect on biogas production].
abstract: The biodiversity of a mesophilic microbial community BYND-8 capable of degrading lignocellulose at 30 degrees C was detected using denaturing gradient gel electrophoresis (DGGE) and the isolation of pure cultures, and the effect of the liquid of rice straw degradation by BYND-8 on biogas production was measured. Six bacterial strains were isolated using peptone cellulose solution medium, and the highest similarities of their 16S rDNA gene sequences to Serratia sp. PSGB 13, S. marcescens strain UFLA-25LS, S. marcescens strain DAP33, Alcaligenes sp. YcX-20, Stenotrophomonas maltophilia strain C6, Bacillus cereus isolate BRL02-71 were 99%, 100%, 96%, 100%, 100% and 99%, respectively. In addition, one band was detected besides six bands of cultured isolates on the DGGE gel, and it showed 100% sequence similarity to uncultured bacterium clone ATB-KS-1446. The cumulative biogas and methane productions of biogas fermentation system added with the liquid of rice straw degraded by BYND-8 were 13 167 mL and 7 248 mL, 44.5% and 95.3% higher than those of the control, respectively, in the early 15 days of fermentation. The results showed that the biodiversity of microbial community BYND-8 was very high, and the time of producing biogas was put forward and biogas production was increased with application of microbial community for rice straw pretreatment during the biogas fermentation.
authors.affiliation: College of Biological Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China. wwdcyy@126.com
authors.forename: Wei-Dong
authors.initials: WD
authors.lastname: Wang
authors.forename: Ya-Bin
authors.initials: YB
authors.lastname: Song
authors.forename: Yan-Jie
authors.initials: YJ
authors.lastname: Wang
authors.forename: Ya-Mei
authors.initials: YM
authors.lastname: Gao
authors.forename: Rui-Yong
authors.initials: RY
authors.lastname: Jing
authors.forename: Zong-Jun
authors.initials: ZJ
authors.lastname: Cui
mesh_terms: D001419:Bacteria / Q000145:classification / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D044822:Biodiversity; D056804:Biofuels / Q000032:analysis*; D007218:Industrial Microbiology; D008031:Lignin / Q000378:metabolism*; D012275:Oryza; D018547:Plant Stems / Q000378:metabolism / Q000382:microbiology*
chemical_list: D056804:Biofuels; C036909:lignocellulose; D008031:Lignin