Soil metabolome response to whole-ecosystem warming at the Spruce and Peatland Responses under Changing Environments experiment

作者：Rachel Wilson, Malak Tfaily, Max Kolton, Eric R. Johnston, Caitlin Petro, C. Zalman, Paul J. Hanson, Heino Heyman, Jennifer Kyle, David Hoyt, Elizabeth Eder, Samuel Purvine, Randall K. Kolka, Stephen D. Sebestyen, Natalie A. Griffiths, Christopher W. Schadt, Jason K. Keller, Scott D. Bridgham, Jeffrey P. Chanton, Joel E. Kostka · 发表于：Proceedings of the National Academy of Sciences · 年份：2021 · DOI：10.1073/pnas.2004192118 · 被引用次数：97 · 研究领域：Peatlands and Wetlands Ecology、Coastal wetland ecosystem dynamics、Fire effects on ecosystems

dynamics and methanogenic pathways. In support of this hypothesis, significant correlations were observed between metabolites and temperature consistent with increased availability of labile substrates, which may stimulate more rapid turnover of microbial proteins. An increase in the abundance of methanogenic genes in response to the increase in the abundance of labile substrates was accompanied by a shift toward acetoclastic and methylotrophic methanogenesis. Our results suggest that as peatland vegetation trends toward increasing vascular plant cover with warming, we can expect a concomitant shift toward increasingly methanogenic conditions and amplified climate-peatland feedbacks.