The study aimed to determine the possible contribution of specific growth conditions and community structures to variable carbon enrichment factors (Ɛ-_carbon) values for the degradation of chlorinated ethenes (CEs) by a bacterial consortium with multiple dechlorinating genes. Ɛ-_carbon values for trichloroethylene, cis-1,2-dichloroethylene, and vinyl chloride were −7.24% ± 0.59%, −14.6% ± 1.71%, and −21.1% ± 1.14%, respectively, during their degradation by a microbial consortium containing multiple dechlorinating genes including tceA and vcrA. The Ɛ-_carbon values of all CEs were not greatly affected by changes in growth conditions and community structures, which directly or indirectly affected reductive dechlorination of CEs by this consortium. Stability analysis provided evidence that the presence of multiple dechlorinating genes within a microbial consortium had little effect on carbon isotope fractionation, as long as the genes have definite, non-overlapping functions.

这项研究的目的是确定的具体生长条件和社会结构变化的碳富集因子（可能作出的贡献Ɛ-_碳通过与多个脱氯基因细菌财团）值氯化ethenes（CES）的降解。Ɛ-_碳三氯乙烯值，顺由微生物聚生体分别-1,2-二氯乙烯和氯乙烯分别为-7.24％±0.59％，-14.6％±1.71％，和-21.1％±1.14％，其在降解过程中包含多个脱氯基因，包括tceA和vcrA。该Ɛ-_碳生长条件和群落结构的变化并没有直接影响所有CE的值，这直接或间接影响了该财团对CE的还原脱氯作用。稳定性分析提供了证据，即微生物联盟中存在多个脱氯基因对碳同位素分级的影响很小，只要这些基因具有确定的，不重叠的功能即可。