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Plant defense theory provides insight into interactions involving inbred plants and insect herbivores


Metadata FieldValueLanguage
dc.creatorHull-Sanders, Helen M.
dc.creatorEubanks, Micky D.
dc.date.accessioned2019-12-19T21:37:15Z
dc.date.available2019-12-19T21:37:15Z
dc.date.created2005
dc.identifierhttps://doi.org/10.1890/04-0935en_US
dc.identifier.urihttps://esajournals.onlinelibrary.wiley.com/doi/full/10.1890/04-0935en_US
dc.identifier.urihttp://hdl.handle.net/11200/49668
dc.description.abstractInbreeding in the form of self-fertilization is widespread among plants and typically results in broad, detrimental changes in plant morphology and physiology. Phenotypic changes associated with inbreeding are likely to alter interactions between inbred plants and other organisms, but few studies have investigated this potential. We found that inbreeding in the entire-leaf morning glory, Ipomoea hederacea var. integriuscula, altered this plant's ability to resist and tolerate attack by insect herbivores. The effects of inbreeding on plant defense, however, varied among insect species, and plant defense theory helped explain this variation. If the effects of inbreeding on plant phenotype are analogous to those of environmental stresses, then the plant vigor hypothesis predicts specialist herbivores will perform better on outbred plants, and the plant stress hypothesis predicts that generalist herbivores will perform better on inbred plants. We conducted a series of greenhouse experiments in which we reared two species of specialist tortoise beetles, a generalist moth species, and a generalist aphid species on inbred and outbred morning glories to test these hypotheses. We found that specialist tortoise beetles performed significantly better when reared on outbred plants and that aphid populations grew significantly faster on inbred plants as predicted by the plant vigor and plant stress hypotheses, respectively. Beet armyworni caterpillars, however, performed better oil outbred plants, not inbred plants as predicted. These results suggest that plant defense theories may be Useful for predicting the effects of inbreeding on plant-herbivore interactions, but differences in herbivore feeding habit (leaf chewing vs. phloern feeding) may also help explain variation in the effects of plant inbreeding on insect herbivores.en_US
dc.formatPDFen_US
dc.relation.ispartofEcologyen_US
dc.relation.ispartofseries1939-9170en_US
dc.rights© 2005. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.subjectAphis gossypiien_US
dc.subjectCharidotella bicoloren_US
dc.subjectDeloyala guttataen_US
dc.subjectherbivoryen_US
dc.subjectinbreedingen_US
dc.subjectIpomoea hederaceaen_US
dc.subjectplant defenseen_US
dc.subjectplant stressen_US
dc.subjectplant vigoren_US
dc.subjectself-fertilizationen_US
dc.subjectSpodoptera exiguaen_US
dc.titlePlant defense theory provides insight into interactions involving inbred plants and insect herbivoresen_US
dc.typeCollectionen_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume86en_US
dc.citation.issue4en_US
dc.citation.spage897en_US
dc.citation.epage904en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US

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