Plants as resource islands and storage units - adopting the mycocentric view of arbuscular mycorrhizal networks
(2010) In FEMS Microbiology Ecology 74(2). p.336-345- Abstract
- The majority of herbaceous plants are connected by arbuscular mycorrhizal (AM) fungi in complex networks, but how this affects carbon (C) and phosphorus (P) allocation among symbionts is poorly understood. We utilized a monoxenic AM system where hyphae from donor roots colonized two younger receiver roots of varying C status. AM fungal C allocation from donor to receiver compartments was followed by measuring the 13C contents in fungal- and plant-specific lipids, and P movement from a hyphal compartment was traced using 33P. Four times more 13C was translocated from donor to C-limited receiver roots, but C remained in fungal tissue. Root C status did not influence the overall AM colonization, but arbuscule density was twice as high in... (More)
- The majority of herbaceous plants are connected by arbuscular mycorrhizal (AM) fungi in complex networks, but how this affects carbon (C) and phosphorus (P) allocation among symbionts is poorly understood. We utilized a monoxenic AM system where hyphae from donor roots colonized two younger receiver roots of varying C status. AM fungal C allocation from donor to receiver compartments was followed by measuring the 13C contents in fungal- and plant-specific lipids, and P movement from a hyphal compartment was traced using 33P. Four times more 13C was translocated from donor to C-limited receiver roots, but C remained in fungal tissue. Root C status did not influence the overall AM colonization, but arbuscule density was twice as high in non-C-limited roots, and they received 10 times more 33P. The number of hyphal connections between compartments did not influence C and P allocation. Interestingly, there were more fungal storage lipids, but fewer structural lipids inside C-limited roots. Our results indicate that AM colonization may poorly reflect host quality as C can be supplied from neighboring roots. A mycocentric view of the symbiosis is proposed where C-delivering hosts are resource islands for the exchange of P for C, and C-limited hosts are storage units. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1726105
- author
- Lekberg, Ylva ; Hammer, Edith LU and Olsson, Pål Axel LU
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- carbon limitation, phosphorus, allocation, resource, arbuscular mycorrhiza, common mycorrhizal networks, fatty acid
- in
- FEMS Microbiology Ecology
- volume
- 74
- issue
- 2
- pages
- 336 - 345
- publisher
- Oxford University Press
- external identifiers
-
- wos:000282883200007
- scopus:78649367125
- ISSN
- 1574-6941
- DOI
- 10.1111/j.1574-6941.2010.00956.x
- language
- English
- LU publication?
- yes
- id
- 2b6a7a18-9932-4dd4-bc80-369ebda6eccc (old id 1726105)
- date added to LUP
- 2016-04-01 14:31:52
- date last changed
- 2022-02-04 21:21:01
@article{2b6a7a18-9932-4dd4-bc80-369ebda6eccc,
abstract = {{The majority of herbaceous plants are connected by arbuscular mycorrhizal (AM) fungi in complex networks, but how this affects carbon (C) and phosphorus (P) allocation among symbionts is poorly understood. We utilized a monoxenic AM system where hyphae from donor roots colonized two younger receiver roots of varying C status. AM fungal C allocation from donor to receiver compartments was followed by measuring the 13C contents in fungal- and plant-specific lipids, and P movement from a hyphal compartment was traced using 33P. Four times more 13C was translocated from donor to C-limited receiver roots, but C remained in fungal tissue. Root C status did not influence the overall AM colonization, but arbuscule density was twice as high in non-C-limited roots, and they received 10 times more 33P. The number of hyphal connections between compartments did not influence C and P allocation. Interestingly, there were more fungal storage lipids, but fewer structural lipids inside C-limited roots. Our results indicate that AM colonization may poorly reflect host quality as C can be supplied from neighboring roots. A mycocentric view of the symbiosis is proposed where C-delivering hosts are resource islands for the exchange of P for C, and C-limited hosts are storage units.}},
author = {{Lekberg, Ylva and Hammer, Edith and Olsson, Pål Axel}},
issn = {{1574-6941}},
keywords = {{carbon limitation; phosphorus; allocation; resource; arbuscular mycorrhiza; common mycorrhizal networks; fatty acid}},
language = {{eng}},
number = {{2}},
pages = {{336--345}},
publisher = {{Oxford University Press}},
series = {{FEMS Microbiology Ecology}},
title = {{Plants as resource islands and storage units - adopting the mycocentric view of arbuscular mycorrhizal networks}},
url = {{http://dx.doi.org/10.1111/j.1574-6941.2010.00956.x}},
doi = {{10.1111/j.1574-6941.2010.00956.x}},
volume = {{74}},
year = {{2010}},
}