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dc.contributor.author
Cavazos, Brittany R.
dc.contributor.author
Bohner, Teresa F.
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Donald, Marion L.
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Sneck, Michelle E.
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Shadow, Alan
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Omacini, Marina
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Rudgers, Jennifer A.
dc.contributor.author
Miller, Tom E. X.
dc.date.available
2020-01-06T15:19:08Z
dc.date.issued
2018-08
dc.identifier.citation
Cavazos, Brittany R.; Bohner, Teresa F.; Donald, Marion L.; Sneck, Michelle E.; Shadow, Alan; et al.; Testing the roles of vertical transmission and drought stress in the prevalence of heritable fungal endophytes in annual grass populations; Wiley Blackwell Publishing, Inc; New Phytologist; 219; 3; 8-2018; 1075-1084
dc.identifier.issn
0028-646X
dc.identifier.uri
http://hdl.handle.net/11336/93601
dc.description.abstract
Beneficial inherited symbionts are expected to reach high prevalence in host populations, yet many are observed at intermediate prevalence. Theory predicts that a balance of fitness benefits and efficiency of vertical transmission may interact to stabilize intermediate prevalence. We established populations of grass hosts (Lolium multiflorum) that varied in prevalence of a heritable fungal endophyte (Epichloё occultans), allowing us to infer long-term equilibria by tracking change in prevalence over one generation. We manipulated an environmental stressor (elevated precipitation), which we hypothesized would reduce the fitness benefits of symbiosis, and altered the efficiency of vertical transmission by replacing endophyte-positive seeds with endophyte-free seeds. Endophytes and elevated precipitation both increased host fitness, but symbiont effects were not stronger in the drier treatment, suggesting that benefits of symbiosis were unrelated to drought tolerance. Reduced transmission suppressed the inferred equilibrium prevalence from 42.6% to 11.7%. However, elevated precipitation did not modify prevalence, consistent with the result that it did not modify fitness benefits. Our results demonstrate that failed transmission can influence the prevalence of heritable microbes and that intermediate prevalence can be a stable equilibrium due to forces that allow symbionts to increase (fitness benefits) but prevent them from reaching fixation (failed transmission).
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DEMOGRAPHY
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Epichloё
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FUNGAL ENDOPHYTE
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LOLIUM MULTIFLORUM
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MUTUALISM
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SYMBIOSIS
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VERTICAL TRANSMISSION
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Testing the roles of vertical transmission and drought stress in the prevalence of heritable fungal endophytes in annual grass populations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-23T21:16:15Z
dc.journal.volume
219
dc.journal.number
3
dc.journal.pagination
1075-1084
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Cavazos, Brittany R.. Rice University; Estados Unidos
dc.description.fil
Fil: Bohner, Teresa F.. Rice University; Estados Unidos
dc.description.fil
Fil: Donald, Marion L.. Rice University; Estados Unidos
dc.description.fil
Fil: Sneck, Michelle E.. Rice University; Estados Unidos
dc.description.fil
Fil: Shadow, Alan. United States Department of Agriculture; Estados Unidos
dc.description.fil
Fil: Omacini, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Rudgers, Jennifer A.. University of New Mexico; Estados Unidos
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Fil: Miller, Tom E. X.. Rice University; Estados Unidos
dc.journal.title
New Phytologist
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/nph.15215
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.15215
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