Laboratoire de Microbiologie et Géochimie des Sols, INRA/CMSE, Dijon Cedex, France.
Appl Environ Microbiol. 2009 Dec;75(23):7565-9. doi: 10.1128/AEM.00616-09. Epub 2009 Oct 2.
A soil microcosm experiment was conducted to evaluate the influence of copper contamination on the dynamics and diversity of bacterial communities actively involved in wheat residue decomposition. In the presence of copper, a higher level of CO(2) release was observed, which did not arise from greater wheat decomposition but from a higher level of stimulation of soil organic matter mineralization (known as the priming effect). Such functional modifications may be related to significant modifications in the diversity of active bacterial populations characterized using the DNA stable-isotope probing approach.
采用土壤微宇宙实验,评估铜污染对积极参与小麦残体分解的细菌群落动态和多样性的影响。在铜存在的情况下,观察到更高水平的 CO(2) 释放,这不是由于小麦分解的增加,而是由于土壤有机质矿化(称为激发效应)的更高水平刺激。这种功能修饰可能与使用 DNA 稳定同位素探针方法表征的活性细菌种群多样性的显著修饰有关。