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Absence of carbon transfer between Medicago truncatula plants linked by a mycorrhizal network, demonstrated in an experimental microcosm

Voets, Liesbeth; Goubau, Isaline; Olsson, Pål Axel LU ; Merckx, Roel and Declerck, Stephane (2008) In FEMS Microbiology Ecology 65(2). p.350-360
Abstract
Carbon transfer between plants via a common extraradical network of arbuscular mycorrhizal (AM) fungal hyphae has been investigated abundantly, but the results remain equivocal. We studied the transfer of carbon through this fungal network, from a Medicago truncatula donor plant to a receiver (1) M. truncatula plant growing under decreased light conditions and (2) M. truncatula seedling. Autotrophic plants were grown in bicompartmented Petri plates, with their root systems physically separated, but linked by the extraradical network of Glomus intraradices. A control Myc-/Nod- M. truncatula plant was inserted in the same compartment as the receiver plant. Following labeling of the donor plant with (CO2)-C-13, C-13 was recovered in the donor... (More)
Carbon transfer between plants via a common extraradical network of arbuscular mycorrhizal (AM) fungal hyphae has been investigated abundantly, but the results remain equivocal. We studied the transfer of carbon through this fungal network, from a Medicago truncatula donor plant to a receiver (1) M. truncatula plant growing under decreased light conditions and (2) M. truncatula seedling. Autotrophic plants were grown in bicompartmented Petri plates, with their root systems physically separated, but linked by the extraradical network of Glomus intraradices. A control Myc-/Nod- M. truncatula plant was inserted in the same compartment as the receiver plant. Following labeling of the donor plant with (CO2)-C-13, C-13 was recovered in the donor plant shoots and roots, in the extraradical mycelium and in the receiver plant roots. Fatty acid analysis of the receiver's roots further demonstrated C-13 enrichment in the fungal-specific lipids, while almost no label was detected in the plant-specific compounds. We conclude that carbon was transferred from the donor to the receiver plant via the AM fungal network, but that the transferred carbon remained within the intraradical AM fungal structures of the receiver's root and was not transferred to the receiver's plant tissues. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
in vitro, arbuscular mycorrhizal symbiosis, autotrophic plants, lipid, C-13, transfer, carbon
in
FEMS Microbiology Ecology
volume
65
issue
2
pages
350 - 360
publisher
Elsevier
external identifiers
  • wos:000257551300017
  • scopus:47249110728
ISSN
1574-6941
DOI
10.1111/j.1574-6941.2008.00503.x
language
English
LU publication?
yes
id
657c8e5b-af8f-41e2-8510-3a9573a387da (old id 1254992)
date added to LUP
2008-10-17 14:45:43
date last changed
2017-10-22 04:02:53
@article{657c8e5b-af8f-41e2-8510-3a9573a387da,
  abstract     = {Carbon transfer between plants via a common extraradical network of arbuscular mycorrhizal (AM) fungal hyphae has been investigated abundantly, but the results remain equivocal. We studied the transfer of carbon through this fungal network, from a Medicago truncatula donor plant to a receiver (1) M. truncatula plant growing under decreased light conditions and (2) M. truncatula seedling. Autotrophic plants were grown in bicompartmented Petri plates, with their root systems physically separated, but linked by the extraradical network of Glomus intraradices. A control Myc-/Nod- M. truncatula plant was inserted in the same compartment as the receiver plant. Following labeling of the donor plant with (CO2)-C-13, C-13 was recovered in the donor plant shoots and roots, in the extraradical mycelium and in the receiver plant roots. Fatty acid analysis of the receiver's roots further demonstrated C-13 enrichment in the fungal-specific lipids, while almost no label was detected in the plant-specific compounds. We conclude that carbon was transferred from the donor to the receiver plant via the AM fungal network, but that the transferred carbon remained within the intraradical AM fungal structures of the receiver's root and was not transferred to the receiver's plant tissues.},
  author       = {Voets, Liesbeth and Goubau, Isaline and Olsson, Pål Axel and Merckx, Roel and Declerck, Stephane},
  issn         = {1574-6941},
  keyword      = {in vitro,arbuscular mycorrhizal symbiosis,autotrophic plants,lipid,C-13,transfer,carbon},
  language     = {eng},
  number       = {2},
  pages        = {350--360},
  publisher    = {Elsevier},
  series       = {FEMS Microbiology Ecology},
  title        = {Absence of carbon transfer between Medicago truncatula plants linked by a mycorrhizal network, demonstrated in an experimental microcosm},
  url          = {http://dx.doi.org/10.1111/j.1574-6941.2008.00503.x},
  volume       = {65},
  year         = {2008},
}