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Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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 respon...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3542056/ https://www.ncbi.nlm.nih.gov/pubmed/23264519 http://dx.doi.org/10.1093/jxb/ers364 |
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author | Nabity, Paul D. Zavala, Jorge A. DeLucia, Evan H. |
author_facet | Nabity, Paul D. Zavala, Jorge A. DeLucia, Evan H. |
author_sort | Nabity, Paul D. |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-3542056 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-35420562013-01-31 Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata Nabity, Paul D. Zavala, Jorge A. DeLucia, Evan H. J Exp Bot Research Paper 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. Oxford University Press 2013-01 2013-01-31 /pmc/articles/PMC3542056/ /pubmed/23264519 http://dx.doi.org/10.1093/jxb/ers364 Text en © 2012 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Paper Nabity, Paul D. Zavala, Jorge A. DeLucia, Evan H. Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata |
title | Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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title_full | Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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title_fullStr | Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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title_full_unstemmed | Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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title_short | Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata
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title_sort | herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in nicotiana attenuata |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3542056/ https://www.ncbi.nlm.nih.gov/pubmed/23264519 http://dx.doi.org/10.1093/jxb/ers364 |
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