First evidences that the ectomycorrhizal fungus Paxillus involutus mobilizes nitrogen and carbon from saprotrophic fungus necromass
(2019) In Environmental Microbiology 21(1). p.197-208- Abstract
Fungal succession in rotting wood shows a surprising abundance of ectomycorrhizal (EM) fungi during the late decomposition stages. To better understand the links between EM fungi and saprotrophic fungi, we investigated the potential capacities of the EM fungus Paxillus involutus to mobilize nutrients from necromass of Postia placenta, a wood rot fungus, and to transfer these elements to its host tree. In this aim, we used pure cultures of P. involutus in the presence of labelled Postia necromass ( 15 N/ 13 C) as nutrient source, and a monoxenic mycorrhized pine experiment... (More)
Fungal succession in rotting wood shows a surprising abundance of ectomycorrhizal (EM) fungi during the late decomposition stages. To better understand the links between EM fungi and saprotrophic fungi, we investigated the potential capacities of the EM fungus Paxillus involutus to mobilize nutrients from necromass of Postia placenta, a wood rot fungus, and to transfer these elements to its host tree. In this aim, we used pure cultures of P. involutus in the presence of labelled Postia necromass ( 15 N/ 13 C) as nutrient source, and a monoxenic mycorrhized pine experiment composed of labelled Postia necromass and P. involutus culture in interaction with pine seedlings. The isotopic labelling was measured in both experiments. In pure culture, P. involutus was able to mobilize N, but C as well, from the Postia necromass. In the symbiotic interaction experiment, we measured high 15 N enrichments in all plant and fungal compartments. Interestingly, 13 C remains mainly in the mycelium and mycorrhizas, demonstrating that the EM fungus transferred essentially N from the necromass to the tree. These observations reveal that fungal organic matter could represent a significant N source for EM fungi and trees, but also a C source for mycorrhizal fungi, including in symbiotic lifestyle.
(Less)
- author
- Akroume, Emila ; Maillard, François LU ; Bach, Cyrille ; Hossann, Christian ; Brechet, Claude ; Angeli, Nicolas ; Zeller, Bernhard ; Saint-André, Laurent and Buée, Marc
- publishing date
- 2019-01
- type
- Contribution to journal
- publication status
- published
- in
- Environmental Microbiology
- volume
- 21
- issue
- 1
- pages
- 12 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85056744705
- pmid:30307107
- ISSN
- 1462-2912
- DOI
- 10.1111/1462-2920.14440
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2018 Society for Applied Microbiology and John Wiley & Sons Ltd.
- id
- 969461c0-7e2c-4e3b-a4b8-446432082efd
- date added to LUP
- 2024-06-02 14:59:22
- date last changed
- 2024-06-19 13:57:12
@article{969461c0-7e2c-4e3b-a4b8-446432082efd,
abstract = {{<p> Fungal succession in rotting wood shows a surprising abundance of ectomycorrhizal (EM) fungi during the late decomposition stages. To better understand the links between EM fungi and saprotrophic fungi, we investigated the potential capacities of the EM fungus Paxillus involutus to mobilize nutrients from necromass of Postia placenta, a wood rot fungus, and to transfer these elements to its host tree. In this aim, we used pure cultures of P. involutus in the presence of labelled Postia necromass ( <sup>15</sup> N/ <sup>13</sup> C) as nutrient source, and a monoxenic mycorrhized pine experiment composed of labelled Postia necromass and P. involutus culture in interaction with pine seedlings. The isotopic labelling was measured in both experiments. In pure culture, P. involutus was able to mobilize N, but C as well, from the Postia necromass. In the symbiotic interaction experiment, we measured high <sup>15</sup> N enrichments in all plant and fungal compartments. Interestingly, <sup>13</sup> C remains mainly in the mycelium and mycorrhizas, demonstrating that the EM fungus transferred essentially N from the necromass to the tree. These observations reveal that fungal organic matter could represent a significant N source for EM fungi and trees, but also a C source for mycorrhizal fungi, including in symbiotic lifestyle.</p>}},
author = {{Akroume, Emila and Maillard, François and Bach, Cyrille and Hossann, Christian and Brechet, Claude and Angeli, Nicolas and Zeller, Bernhard and Saint-André, Laurent and Buée, Marc}},
issn = {{1462-2912}},
language = {{eng}},
number = {{1}},
pages = {{197--208}},
publisher = {{Wiley-Blackwell}},
series = {{Environmental Microbiology}},
title = {{First evidences that the ectomycorrhizal fungus Paxillus involutus mobilizes nitrogen and carbon from saprotrophic fungus necromass}},
url = {{http://dx.doi.org/10.1111/1462-2920.14440}},
doi = {{10.1111/1462-2920.14440}},
volume = {{21}},
year = {{2019}},
}