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Root trait-microbial relationships across tundra plant species

Spitzer, Clydecia and Lindahl, Björn and Wardle, David A. and Sundqvist, Maja and Gundale, Michael and Fanin, Nicolas and Kardol, Paul (2021). Root trait-microbial relationships across tundra plant species. New Phytologist. 229 , 1508-1520
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Abstract

Fine roots, and their functional traits, influence associated rhizosphere microorganisms via root exudation and root litter quality. However, little information is known about their relationship with rhizosphere microbial taxa and functional guilds.We investigated the relationships of 11 fine root traits of 20 sub-arctic tundra meadow plant species and soil microbial community composition, using phospholipid fatty acids (PLFAs) and high-throughput sequencing. We primarily focused on the root economics spectrum, as it provides a useful framework to examine plant strategies by integrating the co-ordination of belowground root traits along a resource acquisition-conservation trade-off axis.We found that the chemical axis of the fine root economics spectrum was positively related to fungal to bacterial ratios, but negatively to Gram-positive to Gram-negative bacterial ratios. However, this spectrum was unrelated to the relative abundance of functional guilds of soil fungi. Nevertheless, the relative abundance of arbuscular mycorrhizal fungi was positively correlated to root carbon content, but negatively to the numbers of root forks per root length.Our results suggest that the fine root economics spectrum is important for predicting broader groups of soil microorganisms (i.e. fungi and bacteria), while individual root traits may be more important for predicting soil microbial taxa and functional guilds.

Authors/Creators:Spitzer, Clydecia and Lindahl, Björn and Wardle, David A. and Sundqvist, Maja and Gundale, Michael and Fanin, Nicolas and Kardol, Paul
Title:Root trait-microbial relationships across tundra plant species
Series Name/Journal:New Phytologist
Year of publishing :2021
Volume:229
Page range:1508-1520
Number of Pages:13
Publisher:WILEY
ISSN:0028-646X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:fine root traits, fungi, plant–microorganism interactions, rhizosphere, tundra ecosystems
URN:NBN:urn:nbn:se:slu:epsilon-p-108719
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108719
Additional ID:
Type of IDID
DOI10.1111/nph.16982
Web of Science (WoS)000583529900001
ID Code:22159
Faculty:S - Faculty of Forest Sciences
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(S) > Dept. of Forest Ecology and Management
(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:09 Feb 2021 07:55
Metadata Last Modified:09 Feb 2021 08:01

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