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Synergies between mycorrhizal fungi and microbial communities increase plant nitrogen acquisition

Hestrin, Rachel ; Hammer, Edith C. LU ; Mueller, Carsten W. and Lehmann, Johannes (2019) In Communications Biology 2.
Abstract
Nitrogen availability often restricts primary productivity in terrestrial ecosystems. Arbuscular mycorrhizal fungi are ubiquitous symbionts of terrestrial plants and can improve plant nitrogen acquisition, but have a limited ability to access organic nitrogen. Although other soil biota mineralize organic nitrogen into bioavailable forms, they may simultaneously compete for nitrogen, with unknown consequences for plant nutrition. Here, we show that synergies between the mycorrhizal fungus Rhizophagus irregularis and soil microbial communities have a highly non-additive effect on nitrogen acquisition by the model grass Brachypodium distachyon. These multipartite microbial synergies result in a doubling of the nitrogen that mycorrhizal plants... (More)
Nitrogen availability often restricts primary productivity in terrestrial ecosystems. Arbuscular mycorrhizal fungi are ubiquitous symbionts of terrestrial plants and can improve plant nitrogen acquisition, but have a limited ability to access organic nitrogen. Although other soil biota mineralize organic nitrogen into bioavailable forms, they may simultaneously compete for nitrogen, with unknown consequences for plant nutrition. Here, we show that synergies between the mycorrhizal fungus Rhizophagus irregularis and soil microbial communities have a highly non-additive effect on nitrogen acquisition by the model grass Brachypodium distachyon. These multipartite microbial synergies result in a doubling of the nitrogen that mycorrhizal plants acquire from organic matter and a tenfold increase in nitrogen acquisition compared to non-mycorrhizal plants grown in the absence of soil microbial communities. This previously unquantified multipartite relationship may contribute to more than 70 Tg of annually assimilated plant nitrogen, thereby playing a critical role in global nutrient cycling and ecosystem function.
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organization
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type
Contribution to journal
publication status
published
subject
in
Communications Biology
volume
2
article number
233
pages
9 pages
publisher
Nature Research
external identifiers
  • scopus:85071146611
  • pmid:31263777
ISSN
2399-3642
DOI
10.1038/s42003-019-0481-8
language
English
LU publication?
yes
id
f7343ddc-d267-4018-83e7-47bd523958ae
date added to LUP
2019-08-16 09:47:39
date last changed
2020-03-24 07:00:53
@article{f7343ddc-d267-4018-83e7-47bd523958ae,
  abstract     = {Nitrogen availability often restricts primary productivity in terrestrial ecosystems. Arbuscular mycorrhizal fungi are ubiquitous symbionts of terrestrial plants and can improve plant nitrogen acquisition, but have a limited ability to access organic nitrogen. Although other soil biota mineralize organic nitrogen into bioavailable forms, they may simultaneously compete for nitrogen, with unknown consequences for plant nutrition. Here, we show that synergies between the mycorrhizal fungus Rhizophagus irregularis and soil microbial communities have a highly non-additive effect on nitrogen acquisition by the model grass Brachypodium distachyon. These multipartite microbial synergies result in a doubling of the nitrogen that mycorrhizal plants acquire from organic matter and a tenfold increase in nitrogen acquisition compared to non-mycorrhizal plants grown in the absence of soil microbial communities. This previously unquantified multipartite relationship may contribute to more than 70 Tg of annually assimilated plant nitrogen, thereby playing a critical role in global nutrient cycling and ecosystem function.<br/>},
  author       = {Hestrin, Rachel and Hammer, Edith C. and Mueller, Carsten W. and Lehmann, Johannes},
  issn         = {2399-3642},
  language     = {eng},
  month        = {06},
  publisher    = {Nature Research},
  series       = {Communications Biology},
  title        = {Synergies between mycorrhizal fungi and microbial communities increase plant nitrogen acquisition},
  url          = {http://dx.doi.org/10.1038/s42003-019-0481-8},
  doi          = {10.1038/s42003-019-0481-8},
  volume       = {2},
  year         = {2019},
}