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Environmental factors shaping the abundance and distribution of laccase-encoding bacterial community with potential phenolic oxidase capacity during composting
Lu, Lunhui1,2,3; Zeng, Guangming1,2; Fan, Changzheng1,2; Guo, Jinsong3; Zhang, Jiachao4; Chen, Ming1,2; Wu, Haipeng1,2; Yuan, Yujie1,2; He, Xiaoxiao1,2; He, Yan1,2
2015-11-01
摘要Increasing molecular evidence points to a wide occurrence of laccase-like multicopper oxidase (LMCO)-encoding genes in bacteria. Most researches mainly focused on the bacterial LMCO diversity, whereas the processes and the environmental factors responsible for structuring bacterial LMCO communities remain relatively unknown in a composting system. Six gene libraries were constructed from samples in representative stages during composting. A total of 185 sequences obtained from sample DNA extracts were classified to 59 operational taxonomic units (OTUs) based on 10 % cutoff. The distribution profile of bacterial LMCO genes showed that proteobacterial- and actinobacterial-associated species were the dominant communities during composting. Pearson correlation analysis indicated that the pile temperature and water-soluble carbon (WSC) content were significantly positively correlated with bacterial LMCO gene OTU numbers, Chao1 and Shannon index, whereas the humic acid (HA)-like carbon content had the most significant effect on the distribution of the bacterial LMCO genes during composting by redundancy analysis. These findings will improve the understanding of the mutual relationship between environmental factors and bacterial LMCO community compositions in composting.
关键词Composting Bacteria Laccase-like multicopper oxidases Environmental factors
DOI10.1007/s00253-015-6754-3
发表期刊APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
ISSN0175-7598
卷号99期号:21页码:9191-9201
通讯作者Zeng, GM (reprint author), Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
收录类别SCI
WOS记录号WOS:000363481400032
语种英语