Elevated atmospheric CO2 affects soil microbial diversity associated with trembling aspen
Elevated atmospheric CO2 affects soil microbial diversity associated with trembling aspen
复制标题
DOI：
10.1111/j.1462-2920.2007.01512.x
复制
发表时间：
2008-04-01
影响因子：
5.1
通讯作者：
van der Lelie, Daniel
中科院分区：
文献类型：
--
作者：
Lesaulnier, Celine;Papamichail, Dimitris;van der Lelie, Daniel
通过对从 Rhinelander WI 自由空气 CO2 和 O-3 富集 (FACE) 实验微生物群落宏基因组中扩增的 6996 个完整核糖体 DNA 序列进行分类，评估了大气 CO2 升高 (560 p.p.m.) 和随后的植物反应对与颤杨相关的土壤微生物群落组成的影响。这种深入的比较分析提供了针对这种环境扰动而发生的人口变化的前所未有的、详细的和深入的分支概况。细菌和真核生物的总丰度没有变化；然而，观察到异养分解者和外生菌根真菌的增加。可能与氨氧化有关的细菌和古细菌、Crenarchaea 领域的硝酸盐还原剂随着二氧化碳浓度的升高而显着减少。土壤生物群的这些变化证明了白杨与其周围土壤中的微生物之间的相互作用发生了改变，并支持了这样的理论：在二氧化碳浓度升高的情况下，植物碎屑的产生量增加会显着改变土壤微生物群落的组成。
The effects of elevated atmospheric CO2 (560 p.p.m.) and subsequent plant responses on the soil microbial community composition associated with trembling aspen was assessed through the classification of 6996 complete ribosomal DNA sequences amplified from the Rhinelander WI free-air CO2 and O-3 enrichment (FACE) experiments microbial community metagenome. This in-depth comparative analysis provides an unprecedented, detailed and deep branching profile of population changes incurred as a response to this environmental perturbation. Total bacterial and eukaryotic abundance does not change; however, an increase in heterotrophic decomposers and ectomycorrhizal fungi is observed. Nitrate reducers of the domain bacteria and archaea, of the phylum Crenarchaea, potentially implicated in ammonium oxidation, significantly decreased with elevated CO2. These changes in soil biota are evidence for altered interactions between trembling aspen and the microorganisms in its surrounding soil, and support the theory that greater plant detritus production under elevated CO2 significantly alters soil microbial community composition.