title: Response of compost maturity and microbial community composition to pentachlorophenol (PCP)-contaminated soil during composting.
abstract: Two composting piles were prepared by adding to a mixture of rice straw, vegetables and bran: (i) raw soil free from pentachlorophenol (PCP) contamination (pile A) and (ii) PCP-contaminated soil (pile B). It was shown by the results that compost maturity characterized by water soluble carbon (WSC), TOC/TN ratio, germination index (GI) and dehydrogenase activity (DA) was significantly affected by PCP exposure, which resulted in an inferior degree of maturity for pile B. DGGE analysis revealed an inhibited effect of PCP on compost microbial abundance. The bacteria community shifts were mainly consistent with composting factors such as temperature, pH, moisture content and substrates. By contrast, the fungal communities were more sensitive to PCP contamination due to the significant correlation between fungal community shifts and PCP removal. Therefore, the different microbial community compositions for properly evaluating the degree of maturity and PCP contamination were suggested.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China. zgming@hnu.cn
authors.forename: Guangming
authors.initials: G
authors.lastname: Zeng
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yu
authors.forename: Yaoning
authors.initials: Y
authors.lastname: Chen
authors.forename: Jiachao
authors.initials: J
authors.lastname: Zhang
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Man
authors.initials: M
authors.lastname: Yu
authors.forename: Mingjie
authors.initials: M
authors.lastname: Zhao
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D004591:Electrophoresis, Polyacrylamide Gel; D005658:Fungi / Q000235:genetics / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D010416:Pentachlorophenol / Q000302:isolation & purification / Q000378:metabolism*; D012987:Soil; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D010416:Pentachlorophenol