"Ménage à trois": the presence/absence of thyme shapes the mutualistic interaction between the host plant Medicago truncatula (Fabaceae) and its symbiotic bacterium Sinorhizobium meliloti

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"Ménage à trois" : the presence/absence of thyme shapes the mutualistic interaction between the host plant Medicago truncatula (Fabaceae) and its symbiotic bacterium Sinorhizobium meliloti. / Ehlers, Bodil K; Grøndahl, Eva; Ronfort, Joëlle; Bataillon, Thomas.

In: Ecology and Evolution, Vol. 2, No. 7, 2012, p. 1676-81.

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@article{9c2b7a4d270140a492522d5e3831c796,
title = "{"}M{\'e}nage {\`a} trois{"}: the presence/absence of thyme shapes the mutualistic interaction between the host plant Medicago truncatula (Fabaceae) and its symbiotic bacterium Sinorhizobium meliloti",
abstract = "The long-term maintenance of specialized mutualisms remains an evolutionary puzzle. Recent focus has been on factors governing the stability of these mutualisms, including sanctions by the host, partner choice, and coevolutionary constraint, that is, the genetic correlation (r(G)) between fitness of both partners. So far these studies have been typically carried out in a single environment. Here, we ask if the genetic correlation between fitness of the host plant Medicago truncatula (Fabaceae) and its bacterial symbiont Sinorhizobium meliloti is affected by the presence/absence of a monoterpene (carvacrol) leached into the soil by Thymus vulgaris-a common plant of the Mediterranean vegetation, often co-occuring with Medicago. We show that the presence of carvacrol in the soil dramatically affects fitness of the rhizobial partner and increases the magnitude of r(G) between plant and rhizobia fitness (r(G) = 0.02 ± 0.05 vs. r(G) = 0.57 ± 0.02). This finding emphasizes the importance of heterogeneity in the biotic environment for understanding the evolution of species interactions.",
author = "Ehlers, {Bodil K} and Eva Gr{\o}ndahl and Jo{\"e}lle Ronfort and Thomas Bataillon",
year = "2012",
doi = "10.1002/ece3.270",
language = "English",
volume = "2",
pages = "1676--81",
journal = "Ecology and Evolution",
issn = "2045-7758",
publisher = "John Wiley Sons Ltd",
number = "7",

}

RIS

TY - JOUR

T1 - "Ménage à trois"

T2 - the presence/absence of thyme shapes the mutualistic interaction between the host plant Medicago truncatula (Fabaceae) and its symbiotic bacterium Sinorhizobium meliloti

AU - Ehlers, Bodil K

AU - Grøndahl, Eva

AU - Ronfort, Joëlle

AU - Bataillon, Thomas

PY - 2012

Y1 - 2012

N2 - The long-term maintenance of specialized mutualisms remains an evolutionary puzzle. Recent focus has been on factors governing the stability of these mutualisms, including sanctions by the host, partner choice, and coevolutionary constraint, that is, the genetic correlation (r(G)) between fitness of both partners. So far these studies have been typically carried out in a single environment. Here, we ask if the genetic correlation between fitness of the host plant Medicago truncatula (Fabaceae) and its bacterial symbiont Sinorhizobium meliloti is affected by the presence/absence of a monoterpene (carvacrol) leached into the soil by Thymus vulgaris-a common plant of the Mediterranean vegetation, often co-occuring with Medicago. We show that the presence of carvacrol in the soil dramatically affects fitness of the rhizobial partner and increases the magnitude of r(G) between plant and rhizobia fitness (r(G) = 0.02 ± 0.05 vs. r(G) = 0.57 ± 0.02). This finding emphasizes the importance of heterogeneity in the biotic environment for understanding the evolution of species interactions.

AB - The long-term maintenance of specialized mutualisms remains an evolutionary puzzle. Recent focus has been on factors governing the stability of these mutualisms, including sanctions by the host, partner choice, and coevolutionary constraint, that is, the genetic correlation (r(G)) between fitness of both partners. So far these studies have been typically carried out in a single environment. Here, we ask if the genetic correlation between fitness of the host plant Medicago truncatula (Fabaceae) and its bacterial symbiont Sinorhizobium meliloti is affected by the presence/absence of a monoterpene (carvacrol) leached into the soil by Thymus vulgaris-a common plant of the Mediterranean vegetation, often co-occuring with Medicago. We show that the presence of carvacrol in the soil dramatically affects fitness of the rhizobial partner and increases the magnitude of r(G) between plant and rhizobia fitness (r(G) = 0.02 ± 0.05 vs. r(G) = 0.57 ± 0.02). This finding emphasizes the importance of heterogeneity in the biotic environment for understanding the evolution of species interactions.

U2 - 10.1002/ece3.270

DO - 10.1002/ece3.270

M3 - Journal article

C2 - 22957171

VL - 2

SP - 1676

EP - 1681

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 7

ER -