A highly infective plant-associated bacterium influences reproductive rates in pea aphids

Persistent Link:
http://hdl.handle.net/10150/617209
Title:
A highly infective plant-associated bacterium influences reproductive rates in pea aphids
Author:
Hendry, Tory A.; Clark, Kelley J.; Baltrus, David A.
Affiliation:
Univ Arizona, Sch Plant Sci
Issue Date:
2016-02-10
Publisher:
ROYAL SOC
Citation:
A highly infective plant-associated bacterium influences reproductive rates in pea aphids 2016, 3 (2):150478 Royal Society Open Science
Journal:
Royal Society Open Science
Rights:
© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
Pea aphids, Acyrthosiphon pisum, have the potential to increase reproduction as a defence against pathogens, though how frequently this occurs or how infection with live pathogens influences this response is not well understood. Here we determine the minimum infective dose of an environmentally common bacterium and possible aphid pathogen, Pseudomonas syringae, to determine the likelihood of pathogenic effects to pea aphids. Additionally, we used P. syringae infection to investigate how live pathogens may alter reproductive rates. We found that oral bacterial exposure decreased subsequent survival of aphids in a dose-dependent manner and we estimate that ingestion of less than 10 bacterial cells is sufficient to increase aphid mortality. Pathogen dose was positively related to aphid reproduction. Aphids exposed to low bacterial doses showed decreased, although statistically indistinguishable, fecundity compared to controls. Aphids exposed to high doses reproduced significantly more than low dose treatments and also more, but not significantly so, than controls. These results are consistent with previous studies suggesting that pea aphids may use fecundity compensation as a response to pathogens. Consequently, even low levels of exposure to a common plant-associated bacterium may therefore have significant effects on pea aphid survival and reproduction.
ISSN:
2054-5703
DOI:
10.1098/rsos.150478
Keywords:
Acyrthosiphon pisum; Pseudomonas syringae; fecundity compensation
Version:
Final published version
Sponsors:
Agriculture and Food Research Initiative Competitive grant USDA National Institute of Food and Agriculture [2014-67012-21733]
Additional Links:
http://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.150478

Full metadata record

DC FieldValue Language
dc.contributor.authorHendry, Tory A.en
dc.contributor.authorClark, Kelley J.en
dc.contributor.authorBaltrus, David A.en
dc.date.accessioned2016-07-19T02:14:50Z-
dc.date.available2016-07-19T02:14:50Z-
dc.date.issued2016-02-10-
dc.identifier.citationA highly infective plant-associated bacterium influences reproductive rates in pea aphids 2016, 3 (2):150478 Royal Society Open Scienceen
dc.identifier.issn2054-5703-
dc.identifier.doi10.1098/rsos.150478-
dc.identifier.urihttp://hdl.handle.net/10150/617209-
dc.description.abstractPea aphids, Acyrthosiphon pisum, have the potential to increase reproduction as a defence against pathogens, though how frequently this occurs or how infection with live pathogens influences this response is not well understood. Here we determine the minimum infective dose of an environmentally common bacterium and possible aphid pathogen, Pseudomonas syringae, to determine the likelihood of pathogenic effects to pea aphids. Additionally, we used P. syringae infection to investigate how live pathogens may alter reproductive rates. We found that oral bacterial exposure decreased subsequent survival of aphids in a dose-dependent manner and we estimate that ingestion of less than 10 bacterial cells is sufficient to increase aphid mortality. Pathogen dose was positively related to aphid reproduction. Aphids exposed to low bacterial doses showed decreased, although statistically indistinguishable, fecundity compared to controls. Aphids exposed to high doses reproduced significantly more than low dose treatments and also more, but not significantly so, than controls. These results are consistent with previous studies suggesting that pea aphids may use fecundity compensation as a response to pathogens. Consequently, even low levels of exposure to a common plant-associated bacterium may therefore have significant effects on pea aphid survival and reproduction.en
dc.description.sponsorshipAgriculture and Food Research Initiative Competitive grant USDA National Institute of Food and Agriculture [2014-67012-21733]en
dc.language.isoenen
dc.publisherROYAL SOCen
dc.relation.urlhttp://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.150478en
dc.rights© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.en
dc.subjectAcyrthosiphon pisumen
dc.subjectPseudomonas syringaeen
dc.subjectfecundity compensationen
dc.titleA highly infective plant-associated bacterium influences reproductive rates in pea aphidsen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Sch Plant Scien
dc.identifier.journalRoyal Society Open Scienceen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.