Journal article

Microbial regulation of the soil carbon cycle: evidence from gene-enzyme relationships

Pankaj Trivedi, Manuel Delgado-Baquerizo, Chanda Trivedi, Hangwei Hu, Ian C Anderson, Thomas C Jeffries, Jizhong Zhou, Brajesh K Singh



A lack of empirical evidence for the microbial regulation of ecosystem processes, including carbon (C) degradation, hinders our ability to develop a framework to directly incorporate the genetic composition of microbial communities in the enzyme-driven Earth system models. Herein we evaluated the linkage between microbial functional genes and extracellular enzyme activity in soil samples collected across three geographical regions of Australia. We found a strong relationship between different functional genes and their corresponding enzyme activities. This relationship was maintained after considering microbial community structure, total C and soil pH using structural equation modelling. Res..

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University of Melbourne Researchers


Awarded by Grains Research and Development Corporation (GRDC), Australia

Awarded by Australian Research Council

Funding Acknowledgements

We thank Dr IC Rochester, Dr G Vadakattu, Dr K Flower, Dr D Minkey and Dr M McNee for their help in sample collection. The Grains Research and Development Corporation (GRDC), Australia via Grant number UWS000008 and Australian Research Council via Grant number DP13010484 funded this work. Drs C Janitz and J King from Next Generation Sequencing Facility of WSU are acknowledged for Pyrosequencing analysis.