title: Role of psychrotrophic bacteria in organic domestic waste composting in cold regions of China.
abstract: To study the influence of psychrotrophic bacteria on organic domestic waste (ODW) composting in cold regions, twelve new efficient psychrotrophic composting strains were isolated. Together with the published representative composting strains, a phylogenetic tree was constructed showing that although the strains belong to the same phylum, the genera were markedly different. The twelve strains were inoculated into the ODW in the composting reactor at 13°C. After treatment, the indices of temperature, moisture content, pH, electrical conductivity, C/N, ammonium nitrogen, and nitrate nitrogen indicated that the compost had reached maturity. The thermophilic phase was reached at 17d, and composting was completed at 42d, a markedly shorter composting time than that in previous studies. High-throughput sequencing indicated that the inoculative strains became the dominant community during the mesophilic phase and that they enhanced the stability of the microbial community structure. Thus, psychrotrophic bacteria played a key role in low-temperature composting.
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Ning
authors.initials: N
authors.lastname: Hou
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Luming
authors.initials: L
authors.lastname: Wen
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Huiming
authors.initials: H
authors.lastname: Cao
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Keran
authors.initials: K
authors.lastname: Liu
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Xuejiao
authors.initials: X
authors.lastname: An
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Dapeng
authors.initials: D
authors.lastname: Li
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Hailan
authors.initials: H
authors.lastname: Wang
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Du
authors.affiliation: College of Resources and Environment, Northeast Agricultural University, Harbin 150030, Heilongjiang, PR China. Electronic address: chunyanli@neau.edu.cn.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Li
mesh_terms: D001419:Bacteria / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D003080:Cold Temperature; D010802:Phylogeny; D012987:Soil; D013696:Temperature
chemical_list: D012987:Soil; D002244:Carbon
keywords: High-throughput sequencing; Microbial community structure; Organic domestic waste composting; Psychrotrophic bacteria