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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ers364
|2 doi
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|a pubmed24n1222.xml
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|a eng
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|a Nabity, Paul D
|e verfasserin
|4 aut
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|a Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.06.2013
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Herbivory initiates a shift in plant metabolism from growth to defence that may reduce fitness in the absence of further herbivory. However, the defence-induced changes in carbon assimilation that precede this reallocation in resources remain largely undetermined. This study characterized the response of photosynthesis to herbivore induction of jasmonic acid (JA)-related defences in Nicotiana attenuata to increase understanding of these mechanisms. It was hypothesized that JA-induced defences would immediately reduce the component processes of photosynthesis upon attack and was predicted that wild-type plants would suffer greater reductions in photosynthesis than plants lacking JA-induced defences. Gas exchange, chlorophyll fluorescence, and thermal spatial patterns were measured together with the production of defence-related metabolites after attack and through recovery. Herbivore damage immediately reduced electron transport and gas exchange in wild-type plants, and gas exchange remained suppressed for several days after attack. The sustained reductions in gas exchange occurred concurrently with increased defence metabolites in wild-type plants, whereas plants lacking JA-induced defences suffered minimal suppression in photosynthesis and no increase in defence metabolite production. This suppression in photosynthesis occurred only after sustained defence signalling and defence chemical mobilization, whereas a short bout of feeding damage only transiently altered components of photosynthesis. It was identified that lipoxygenase signalling interacted with photosynthetic electron transport and that the resulting JA-related metabolites reduced photosynthesis. These data represent a metabolic cost to mounting a chemical defence against herbivory and link defence-signalling networks to the differential effects of herbivory on photosynthesis in remaining leaf tissues in a time-dependent manner
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|a Journal Article
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|a Cyclopentanes
|2 NLM
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|a Oxylipins
|2 NLM
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|a Plant Proteins
|2 NLM
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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|a jasmonic acid
|2 NLM
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|2 NLM
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|a Lipoxygenase
|2 NLM
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| 650 |
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|a EC 1.13.11.12
|2 NLM
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| 700 |
1 |
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|a Zavala, Jorge A
|e verfasserin
|4 aut
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| 700 |
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|a DeLucia, Evan H
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 64(2013), 2 vom: 15. Jan., Seite 685-94
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:64
|g year:2013
|g number:2
|g day:15
|g month:01
|g pages:685-94
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|u http://dx.doi.org/10.1093/jxb/ers364
|3 Volltext
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