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Root traits and soil micro-organisms as drivers of plant-soil feedbacks within the sub-arctic tundra meadow

Spitzer, Clydecia and Wardle, David and Lindahl, Björn and Sundqvist, Maja and Gundale, Michael and Fanin, Nicolas and Kardol, Paul (2022). Root traits and soil micro-organisms as drivers of plant-soil feedbacks within the sub-arctic tundra meadow. Journal of Ecology. 110 :2 , 466-478
[Research article]

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Abstract

Plant-soil feedback (PSF) results from the influence of plants on the composition and abundance of various taxa and functional groups of soil micro-organisms, and their reciprocal effects on the plants. However, little is understood about the importance of fine root traits and root economic strategies in moderating microbial-driven PSF. We examined the relationships between PSF and 11 chemical and morphological root traits from 18 sub-arctic meadow plant species, as well as the soil microbial community composition which we characterized using phospholipid fatty acids (PLFAs) and high-throughput sequencing. We also investigated the importance of the root economics spectrum in influencing PSF, because it indicates plant below-ground economic strategies via trade-offs between resource acquisition and conservation. When we considered the entire root economics spectrum, we found that PSFs were more negative when root trait values were more acquisitive across the 18 species. In addition, PSF was more negative when values of root nitrogen content and root forks per root length were higher, and more positive when root dry matter content was higher. We additionally identified two fungal orders that were negatively related to PSF. However, we found no evidence that root traits influenced PSF through its relationship with these fungal orders. Synthesis. Our results provide evidence that for some fine root traits, the root economics spectrum and some fungal orders have an important role in influencing PSF. By investigating the roles of soil micro-organisms and fine root traits in driving PSF, this study enables us to better understand root trait-microbial linkages across species and therefore offers new insights about the mechanisms that underpin PSFs and ultimately plant community assembly.

Authors/Creators:Spitzer, Clydecia and Wardle, David and Lindahl, Björn and Sundqvist, Maja and Gundale, Michael and Fanin, Nicolas and Kardol, Paul
Title:Root traits and soil micro-organisms as drivers of plant-soil feedbacks within the sub-arctic tundra meadow
Series Name/Journal:Journal of Ecology
Year of publishing :2022
Volume:110
Number:2
Page range:466-478
Number of Pages:13
Publisher:WILEY
ISSN:0022-0477
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 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:arctic, fine root traits, functional ecology, fungi, plant-soil feedback, root economics spectrum, tundra ecosystems
URN:NBN:urn:nbn:se:slu:epsilon-p-114702
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114702
Additional ID:
Type of IDID
DOI10.1111/1365-2745.13814
Web of Science (WoS)000723140300001
ID Code:27412
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:21 Mar 2022 09:25
Metadata Last Modified:16 May 2022 20:30

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