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TOC1 in Nicotiana attenuata regulates efficient allocation of nitrogen to defense metabolites under herbivory stress : <i>TOC1</i>in<i>Nicotiana attenuata</i>regulates efficient allocation of nitrogen to defense metabolites under herbivory stress

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dc.contributor.authorValim, Henrique-
dc.contributor.authorDalton, Heidi-
dc.contributor.authorJoo, Youngsung-
dc.contributor.authorMcGale, Erica-
dc.contributor.authorHalitschke, Rayko-
dc.contributor.authorGaquerel, Emmanuel-
dc.contributor.authorBaldwin, Ian T.-
dc.contributor.authorSchuman, Meredith C.-
dc.date.accessioned2024-05-03T04:43:10Z-
dc.date.available2024-05-03T04:43:10Z-
dc.date.created2024-05-03-
dc.date.issued2020-11-
dc.identifier.citationNEW PHYTOLOGIST, Vol.228 No.4, pp.1227-1242-
dc.identifier.issn0028-646X-
dc.identifier.urihttps://hdl.handle.net/10371/200888-
dc.description.abstractThe circadian clock contextualizes plant responses to environmental signals. Plants use temporal information to respond to herbivory, but many of the functional roles of circadian clock components in these responses, and their contribution to fitness, remain unknown. We investigate the role of the central clock regulator TIMING OF CAB EXPRESSION 1 (TOC1) inNicotiana attenuata's defense responses to the specialist herbivoreManduca sextaunder both field and glasshouse conditions. We utilize(15)N pulse-labeling to quantify nitrogen incorporation into pools of three defense compounds: caffeoylputrescine (CP), dicaffeoyl spermidine (DCS) and nicotine. Nitrogen incorporation was decreased in CP and DCS and increased in nicotine pools in irTOC1 plants compared to empty vector (EV) under control conditions, but these differences were abolished after simulated herbivory. Differences between EV and irTOC1 plants in nicotine, but not phenolamide production, were abolished by treatment with the ethylene agonist 1-methylcyclopropene. Using micrografting,TOC1's effect on nicotine was isolated to the root and did not affect the fitness of heterografts under field conditions. These results suggest that the circadian clock contributes to plant fitness by balancing production of metabolically expensive nitrogen-rich defense compounds and mediating the allocation of resources between vegetative biomass and reproduction.-
dc.language영어-
dc.publisherWILEY-
dc.titleTOC1 in Nicotiana attenuata regulates efficient allocation of nitrogen to defense metabolites under herbivory stress-
dc.title.alternativeTOC1inNicotiana attenuataregulates efficient allocation of nitrogen to defense metabolites under herbivory stress-
dc.typeArticle-
dc.identifier.doi10.1111/nph.16784-
dc.citation.journaltitleNEW PHYTOLOGIST-
dc.identifier.wosid000558867800001-
dc.identifier.scopusid2-s2.0-85089363379-
dc.citation.endpage1242-
dc.citation.number4-
dc.citation.startpage1227-
dc.citation.volume228-
dc.description.isOpenAccessY-
dc.contributor.affiliatedAuthorJoo, Youngsung-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.subject.keywordPlusMANDUCA-SEXTA LEPIDOPTERA-
dc.subject.keywordPlusAGROBACTERIUM-MEDIATED TRANSFORMATION-
dc.subject.keywordPlusHOST NICOTIANA-ATTENUATA-
dc.subject.keywordPlusINDUCED ETHYLENE BURST-
dc.subject.keywordPlusCIRCADIAN CLOCK-
dc.subject.keywordPlusPLANT-RESPONSES-
dc.subject.keywordPlusJASMONIC ACID-
dc.subject.keywordPlusMOLECULAR-INTERACTIONS-
dc.subject.keywordPlusINDUCIBLE DEFENSE-
dc.subject.keywordPlusBIOSYNTHESIS-
dc.subject.keywordAuthorethylene signaling-
dc.subject.keywordAuthorherbivory-
dc.subject.keywordAuthorNicotiana attenuata-
dc.subject.keywordAuthornitrogen allocation-
dc.subject.keywordAuthorTIMING OF CAB EXPRESSION1-
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  • College of Natural Sciences
  • School of Biological Sciences
Research Area Ecology, Evolutionary Biology, Plant Sciences, 생태학, 식물과학, 진화생물학

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