The role of soil microbes in the global carbon cycle: tracking the below-ground microbial processing of plant-derived carbon for manipulating carbon dynamics in agricultural systems.
The role of soil microbes in the global carbon cycle: tracking the below-ground microbial processing of plant-derived carbon for manipulating carbon dynamics in agricultural systems.
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DOI：
10.1002/jsfa.6577
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发表时间：
2014-09
影响因子：
4.1
通讯作者：
Shaw, Liz J.
中科院分区：
文献类型：
--
作者：
Gougoulias, Christos;Clark, Joanna M.;Shaw, Liz J.
关键词：
众所周知，自工业革命以来，人类活动的结果显着增加了大气二氧化碳（CO2）（和其他温室气体）。十倍，化石燃料排放的年度通量。因此，在这里，土壤碳循环的少量变化可能会对大气中的二氧化碳浓度产生很大的影响，我们在这里讨论了土壤微生物在全球碳循环中的作用，并审查了用于识别植物性碳输入的微生物的主要方法。 management of agro-ecosystems for carbon sequestration and increased agricultural sustainability. We include that, although crucial in enabling the identification of plant-derived carbon-utilising microbes, current technologies lack the high-throughput ability to quantitatively appropriation carbon use by phylogenic groups and its use efficiency and destination within the microbial metabolome. It is this information that is required to information rational manipulation of the plant–soil system to favour生物或生理学对于促进农业土壤中的土壤碳储存最重要。
It is well known that atmospheric concentrations of carbon dioxide (CO2) (and other greenhouse gases) have increased markedly as a result of human activity since the industrial revolution. It is perhaps less appreciated that natural and managed soils are an important source and sink for atmospheric CO2 and that, primarily as a result of the activities of soil microorganisms, there is a soil-derived respiratory flux of CO2 to the atmosphere that overshadows by tenfold the annual CO2 flux from fossil fuel emissions. Therefore small changes in the soil carbon cycle could have large impacts on atmospheric CO2 concentrations. Here we discuss the role of soil microbes in the global carbon cycle and review the main methods that have been used to identify the microorganisms responsible for the processing of plant photosynthetic carbon inputs to soil. We discuss whether application of these techniques can provide the information required to underpin the management of agro-ecosystems for carbon sequestration and increased agricultural sustainability. We conclude that, although crucial in enabling the identification of plant-derived carbon-utilising microbes, current technologies lack the high-throughput ability to quantitatively apportion carbon use by phylogentic groups and its use efficiency and destination within the microbial metabolome. It is this information that is required to inform rational manipulation of the plant–soil system to favour organisms or physiologies most important for promoting soil carbon storage in agricultural soil.
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