title: Effects of changes in straw chemical properties and alkaline soils on bacterial communities engaged in straw decomposition at different temperatures.
abstract: Differences in the composition of a bacterial community engaged in decomposing wheat straw in a fluvo-aquic soil at 15 °C, 25 °C, and 35 °C were identified using barcode pyrosequencing. Functional carbon groups in the decomposing wheat straw were evaluated by (13)C-NMR (nuclear magnetic resonance). Actinobacteria and Firmicutes were more abundant, whereas Alphaproteobacteria and Bacteroidetes were less abundant, at higher temperatures during the later stages of decomposition. Differences in the chemical properties of straw accounted for 19.3% of the variation in the community composition, whereas soil properties accounted for more (24.0%) and temperature, for less (7.4%). Carbon content of the soil microbial biomass and nitrogen content of straw were significantly correlated with the abundance of Alphaproteobacteria, Actinobacteria, and Bacteroidetes. The chemical properties of straw, especially the NCH/OCH3, alkyl O-C-O, and O-alkyl functional groups, exercised a significant effect on the composition of the bacterial community at different temperatures during decomposition-results that extend our understanding of bacterial communities associated with the decomposition of straw in agro-ecosystems and of the effects of temperature and chemical properties of the decomposing straw and soil on such communities.
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.|Poyang Lake Eco-economy Research Center, Jiujiang University, Jiujiang 332005, China.|University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Guixiang
authors.initials: G
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
authors.forename: Jiabao
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
authors.forename: Congzhi
authors.initials: C
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
authors.forename: Youzhi
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Institute of Soil and Water Resources and Environmental Science, College of Environmental&Resource Sciences, Zhejiang University, Hangzhou 310058, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.|University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Zhenghong
authors.initials: Z
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
authors.forename: Xiuli
authors.initials: X
authors.lastname: Xin
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
authors.forename: Bingzi
authors.initials: B
authors.lastname: Zhao
mesh_terms: D039903:Actinobacteria / Q000235:genetics / Q000378:metabolism*; D020561:Alphaproteobacteria / Q000235:genetics / Q000378:metabolism*; D041963:Bacteroidetes / Q000235:genetics / Q000378:metabolism*; D044822:Biodiversity; D018533:Biomass; D002244:Carbon / Q000032:analysis; D017753:Ecosystem; D000068536:Bacillota / Q000235:genetics / Q000378:metabolism*; D064307:Microbiota / Q000235:genetics*; D009584:Nitrogen / Q000032:analysis; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology; D013696:Temperature; D014908:Triticum / Q000737:chemistry / Q000378:metabolism* / Q000382:microbiology*
chemical_list: D012987:Soil; D002244:Carbon; D009584:Nitrogen