Taxa-specific changes in soil microbial community composition induced by pyrogenic carbon amendments
Taxa-specific changes in soil microbial community composition induced by pyrogenic carbon amendments
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DOI：
10.1016/j.soilbio.2010.11.005
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发表时间：
2011-02-01
影响因子：
9.7
通讯作者：
Foster, Jamie S.
中科院分区：
文献类型：
--
作者：
Khodadad, Christina L. M.;Zimmerman, Andrew R.;Foster, Jamie S.
研究了热解碳对森林土壤微生物多样性的影响，通过比较两种土壤类型，火灾影响和非影响，这是与实验室产生的生物炭孵育。生物炭处理过的森林土壤的分子和文化依赖的分析显示，除了生物炭，这是依赖于生物炭和土壤类型的相对丰度和多样性的关键类群的变化。具体而言，有一个整体的损失，在所有的土壤处理橡树和草衍生的生物炭检测自动核糖体基因间间隔区分析的微生物多样性。虽然生物炭修正案后的整体多样性下降，有特定类群的生物炭修正孵育过程中的增加。这些类群的DNA测序显示，在生物炭处理的土壤中的门放线菌和芽单胞菌内的细菌的相对丰度增加。总之，这些结果揭示了显着的影响，热解碳对土壤微生物群落组成和富集的关键类群在母质土壤微生物群落。(C)2010爱思唯尔有限公司版权所有。
The effects of pyrogenic carbon on the microbial diversity of forest soils were examined by comparing two soil types, fire-impacted and non-impacted, that were incubated with laboratory-generated biochars. Molecular and culture-dependent analyses of the biochar-treated forest soils revealed shifts in the relative abundance and diversity of key taxa upon the addition of biochars, which were dependent on biochar and soil type. Specifically, there was an overall loss of microbial diversity in all soils treated with oak and grass-derived biochar as detected by automated ribosomal intergenic spacer analysis. Although the overall diversity decreased upon biochar amendments, there were increases in specific taxa during biochar-amended incubation. DNA sequencing of these taxa revealed an increase in the relative abundance of bacteria within the phyla Actinobacteria and Gemmatimonadetes in biochar-treated soils. Together, these results reveal a pronounced impact of pyrogenic carbon on soil microbial community composition and an enrichment of key taxa within the parent soil microbial community. (C) 2010 Elsevier Ltd. All rights reserved.