Discrete taxa of saprotrophic fungi respire different ages of carbon from Antarctic soils

Scientific Reports
Kevin K NewshamFilipa Cox

Abstract

Different organic compounds have distinct residence times in soil and are degraded by specific taxa of saprotrophic fungi. It hence follows that specific fungal taxa should respire carbon of different ages from these compounds to the atmosphere. Here, we test whether this is the case by radiocarbon (14C) dating CO2 evolved from two gamma radiation-sterilised maritime Antarctic soils inoculated with pure single cultures of four fungi. We show that a member of the Helotiales, which accounted for 41-56% of all fungal sequences in the two soils, respired soil carbon that was aged up to 1,200 years BP and which was 350-400 years older than that respired by the other three taxa. Analyses of the enzyme profile of the Helotialean fungus and the fluxes and δ13C values of CO2 that it evolved suggested that its release of old carbon from soil was associated with efficient cellulose decomposition. Our findings support suggestions that increases in the ages of carbon respired from warmed soils may be caused by changes to the abundances or activities of discrete taxa of microbes, and indicate that the loss of old carbon from soils is driven by specific fungal taxa.

References

Jul 17, 1999·Rapid Communications in Mass Spectrometry : RCM·M SchweizerG Cadisch
Apr 13, 2010·Nature Methods·J Gregory CaporasoRob Knight
Aug 17, 2010·Bioinformatics·Robert C Edgar
Mar 13, 2012·FEMS Microbiology Ecology·Julie R DeslippeWilliam W Mohn
Mar 29, 2012·Proceedings of the National Academy of Sciences of the United States of America·Conrad L SchochUNKNOWN Fungal Barcoding Consortium Author List
Jun 13, 2012·Proceedings of the National Academy of Sciences of the United States of America·Francesca M HopkinsSusan E Trumbore
Oct 12, 2012·Frontiers in Microbiology·Joshua P Schimel, Sean M Schaeffer
Oct 10, 2013·Global Change Biology·Kathrin StreitRolf T W Siegwolf
Oct 12, 2013·Molecular Ecology·Urmas KõljalgKarl-Henrik Larsson
Nov 29, 2014·Science·Leho TedersooKessy Abarenkov
Jan 6, 2016·Global Change Biology·Tom N WalkerNicholas J Ostle
Dec 3, 2016·Nature·T W CrowtherM A Bradford
Mar 11, 2017·Science·Caitlin E Hicks PriesM S Torn
Jul 6, 2017·Ecology Letters·Daniel S MaynardMark A Bradford

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Citations

May 15, 2020·Extremophiles : Life Under Extreme Conditions·Thamar Holanda da SilvaLuiz Henrique Rosa
Sep 1, 2021·Global Change Biology·Mariana KlugeSari Peura

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Methods Mentioned

BETA
PCR

Software Mentioned

USEARCH
ArcMap
MINITAB
QIIME
UCHIME
denovo
ITSx

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