title: Effects of Cu on metabolisms and enzyme activities of microbial communities in the process of composting.
abstract: With the compost matrix of pig manure, wheat straw, and spent mushroom substrate, and then inoculated with the Compound Microbe Preparation, the study investigated the effects of the heavy metal Cu on the process of composting. Biolog EcoPlate™ test revealed that at a low content, Cu could improve the capacities of microbial communities to transform and exploit carbon sources in the form of polymer, thus speeding up the decomposition of agricultural wastes, and at a high content, Cu presented inhibiting effect on microbial communities to exploit complex macromolecular carbon sources, thus extending the decomposition of agricultural wastes. Enzyme activity testing showed that at a low content, Cu presented enzyme activity-activating effect at the early period of composting and inhibiting effect in the late period of composting, and at a high content, Cu presented enzyme activity-inhibiting effects through the process of composting.
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, China.
authors.forename: Xingliang
authors.initials: X
authors.lastname: Guo
authors.forename: Jie
authors.initials: J
authors.lastname: Gu
authors.forename: Hua
authors.initials: H
authors.lastname: Gao
authors.forename: Qingjun
authors.initials: Q
authors.lastname: Qin
authors.forename: Zhixue
authors.initials: Z
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Shao
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Hailong
authors.initials: H
authors.lastname: Li
authors.forename: Weijuan
authors.initials: W
authors.lastname: Zhang
authors.forename: Shengnan
authors.initials: S
authors.lastname: Chen
authors.forename: Jiang
authors.initials: J
authors.lastname: Liu
mesh_terms: D000363:Agaricales / Q000737:chemistry; D000818:Animals; D001419:Bacteria / Q000201:enzymology*; D016000:Cluster Analysis; D003300:Copper / Q000378:metabolism*; D008372:Manure / Q000382:microbiology; D018547:Plant Stems / Q000737:chemistry / Q000382:microbiology; D025341:Principal Component Analysis; D012987:Soil; D012988:Soil Microbiology; D013552:Swine; D013696:Temperature; D014908:Triticum / Q000737:chemistry; D014866:Waste Products / Q000032:analysis
chemical_list: D008372:Manure; D012987:Soil; D014866:Waste Products; D003300:Copper