Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30321
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Angiosperm symbioses with non-mycorrhizal fungal partners enhance N acquisition from ancient organic matter in a warming maritime Antarctic
Author(s): Hill, Paul W
Broughton, Richard
Bougoure, Jeremy
Havelange, William
Newsham, Kevin K
Grant, Helen
Murphy, Daniel V
Clode, Peta
Ramayah, Soshila
Marsden, Karina A
Quilliam, Richard S
Roberts, Paula
Brown, Caley
Read, David J
Deluca, Thomas H
Contact Email: richard.quilliam@stir.ac.uk
Keywords: carbon cycle
climate change
dark septate endophytes
enantiomers
nitrogen cycle
polar
soil
Issue Date: Dec-2019
Citation: Hill PW, Broughton R, Bougoure J, Havelange W, Newsham KK, Grant H, Murphy DV, Clode P, Ramayah S, Marsden KA, Quilliam RS, Roberts P, Brown C, Read DJ & Deluca TH (2019) Angiosperm symbioses with non-mycorrhizal fungal partners enhance N acquisition from ancient organic matter in a warming maritime Antarctic. Ecology Letters, 22 (12), pp. 2111-2119. https://doi.org/10.1111/ele.13399
Abstract: In contrast to the situation in plants inhabiting most of the world’s ecosystems, mycorrhizal fungi are usually absent from roots of the only two native vascular plant species of maritime Antarctica, Deschampsia antarctica and Colobanthus quitensis. Instead, a range of ascomycete fungi, termed dark septate endophytes (DSEs), frequently colonise the roots of these plant species. We demonstrate that colonisation of Antarctic vascular plants by DSEs facilitates not only the acquisition of organic nitrogen as early protein breakdown products, but also as non-proteinaceous D-amino acids and their short peptides, accumulated in slowly-decomposing organic matter, such as moss peat. Our findings suggest that, in a warming maritime Antarctic, this symbiosis has a key role in accelerating the replacement of formerly dominant moss communities by vascular plants, and in increasing the rate at which ancient carbon stores laid down as moss peat over centuries or millennia are returned to the atmosphere as CO2.
DOI Link: 10.1111/ele.13399
Rights: © 2019 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Notes: Additional co-authors: Richard D Bardgett, David W Hopkins and Davey L Jones
Licence URL(s): http://creativecommons.org/licenses/by/4.0/

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