dc.creator | Marco, Diana E. | es |
dc.creator | Carbajal, Juan P. | es |
dc.creator | Cannas, Sergio | es |
dc.creator | Pérez Arnedo, Rebeca | es |
dc.creator | Hidalgo Perea, Ángeles | es |
dc.creator | Olivares, José | es |
dc.creator | Ruiz Sainz, José Enrique | es |
dc.creator | Sanjuán, Juan | es |
dc.date.accessioned | 2020-05-13T14:10:50Z | |
dc.date.available | 2020-05-13T14:10:50Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Marco, D.E., Carbajal, .P., Cannas, S., Pérez Arnedo, R., Hidalgo Perea, Á., Olivares, J.,...,Sanjuán, J. (2009). An experimental and modelling exploration of the host-sanction hypothesis in legume-rhizobia mutualism. Journal of Theoretical Biology, 259 (3), 423-433. | |
dc.identifier.issn | 1095-8541 | es |
dc.identifier.uri | https://hdl.handle.net/11441/96563 | |
dc.description.abstract | Despite the importance of mutualism as a key ecological process, its persistence in
nature is difficult to explain since the existence of exploitative, 'cheating' partners that
could erode the interaction is common. By analogy with the proposed policing strategy
Nature Precedings : hdl:10101/npre.2008.1964.1 : Posted 10 Jun 2008
2
stabilizing intraspecific cooperation, host sanctions against non N2 fixing, cheating
symbionts have been proposed as a force stabilizing mutualism in legume-Rhizobium
symbiosis. Following this proposal, penalizations would include decreased nodular
rhizobial viability and/or early nodule senescence in nodules occupied by cheating
rhizobia. In this work, we analyze the stability of Rhizobium-legume symbiosis when
"cheating" strains are present, using an experimental and modelling approach. We used
split-root experiments with soybean plants inoculated with two rhizobial strains, a
cooperative, normal N2 fixing strain and an isogenic non-fixing, “perfect” cheating
mutant derivative that lacks nitrogenase activity but has the same nodulation abilities
inoculated to split-root plants. We found no experimental evidence of functioning plant
host sanctions to cheater rhizobia based on nodular rhizobia viability and nodule
senescence and maturity molecular markers. Based on these experiments, we developed
a population dynamic model with and without the inclusion of plant host sanctions. We
show that plant populations persist in spite of the presence of cheating rhizobia without
the need of incorporating any sanction against the cheater populations in the model,
under the realistic assumption that plants can at least get some amount of fixed N2 from
the effectively mutualistic rhizobia occupying some nodules. Inclusion of plant
sanctions merely reduces the time needed for reaching plant population equilibrium and
leads to the unrealistic effect of ultimate extinction of cheater strains in soil. Our
simulation results are in agreement with increasing experimental evidence and
theoretical work showing that mutualisms can persist or even improve in presence of
cheating partners. | es |
dc.format | application/pdf | es |
dc.format.extent | 10 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Journal of Theoretical Biology, 259 (3), 423-433. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | mutualism | es |
dc.subject | cheating | es |
dc.subject | legume-rhizobia symbiosis | es |
dc.subject | host sanctions | es |
dc.subject | experimentally-based modelling | es |
dc.title | An experimental and modelling exploration of the host-sanction hypothesis in legume-rhizobia mutualism | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/submittedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Microbiología | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.jtbi.2009.03.033 | es |
dc.identifier.doi | 10.1016/j.jtbi.2009.03.033 | es |
dc.journaltitle | Journal of Theoretical Biology | es |
dc.publication.volumen | 259 | es |
dc.publication.issue | 3 | es |
dc.publication.initialPage | 423 | es |
dc.publication.endPage | 433 | es |