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...
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2013nabity.pdf LINK AL EDITOR |
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| 100 | 1 | |a Nabity, Paul D. |9 68442 | |
| 245 | 0 | 0 | |a Herbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata |
| 520 | |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. | ||
| 653 | 0 | |a CHLOROPHYLL FLUORESCENCE | |
| 653 | 0 | |a DEFENCE | |
| 653 | 0 | |a LIPOXYGENASE | |
| 653 | 0 | |a NICOTINE | |
| 653 | 0 | |a PLANT-INSECT INTERACTION | |
| 653 | 0 | |a CHLOROPHYLL | |
| 653 | 0 | |a CYCLOPENTANE DERIVATIVE | |
| 653 | 0 | |a JASMONIC ACID | |
| 653 | 0 | |a OXYLIPIN | |
| 653 | 0 | |a VEGETABLE PROTEIN | |
| 653 | 0 | |a ANIMAL | |
| 653 | 0 | |a DOWN REGULATION | |
| 653 | 0 | |a GENETICS | |
| 653 | 0 | |a HERBIVORY | |
| 653 | 0 | |a HOST PARASITE INTERACTION | |
| 653 | 0 | |a MANDUCA | |
| 653 | 0 | |a METABOLISM | |
| 653 | 0 | |a PARASITOLOGY | |
| 653 | 0 | |a PHOTOSYNTHESIS | |
| 653 | 0 | |a PHYSIOLOGY | |
| 653 | 0 | |a TOBACCO | |
| 653 | 0 | |a ANIMALS | |
| 653 | 0 | |a CYCLOPENTANES | |
| 653 | 0 | |a DOWN-REGULATION | |
| 653 | 0 | |a HOST-PARASITE INTERACTIONS | |
| 653 | 0 | |a OXYLIPINS | |
| 653 | 0 | |a PLANT PROTEINS | |
| 653 | 0 | |a HEXAPODA | |
| 653 | 0 | |a NICOTIANA ATTENUATA | |
| 700 | 1 | |9 7916 |a Zavala, Jorge Alberto | |
| 700 | 1 | |9 68443 |a DeLucia, Evan H. | |
| 773 | |t Journal of Experimental Botany |g vol.64, no.2 (2013), p.685-694 | ||
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| 900 | |a ^tHerbivore induction of jasmonic acid and chemical defences reduce photosynthesis in Nicotiana attenuata | ||
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| 900 | |a ^aZavala^bJ.A. | ||
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| 900 | |a ^aZavala^bJ. A. | ||
| 900 | |a ^aDeLucia^bE. H. | ||
| 900 | |a ^aNabity^bP.D.^tDepartment of Plant Biology and Institute of Genomic Biology, University of Illinois, Urbana, IL, USA | ||
| 900 | |a ^aZavala^bJ.A.^tCátedra de Bioquímica/INBA, Facultad de Agronomía, University of Buenos Aires-CONICET, Buenos Aires, Argentina | ||
| 900 | |a ^aDelucia^bE.H.^tDepartment of Plant Biology and Institute of Genomic Biology, University of Illinois, Urbana, IL, USA | ||
| 900 | |a ^tJournal of Experimental Botany^cJ. Exp. Bot. | ||
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| 900 | |a Vol. 64, no. 2 | ||
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| 900 | |a CHLOROPHYLL FLUORESCENCE | ||
| 900 | |a DEFENCE | ||
| 900 | |a LIPOXYGENASE | ||
| 900 | |a NICOTINE | ||
| 900 | |a PLANT-INSECT INTERACTION | ||
| 900 | |a CHLOROPHYLL | ||
| 900 | |a CYCLOPENTANE DERIVATIVE | ||
| 900 | |a JASMONIC ACID | ||
| 900 | |a OXYLIPIN | ||
| 900 | |a VEGETABLE PROTEIN | ||
| 900 | |a ANIMAL | ||
| 900 | |a DOWN REGULATION | ||
| 900 | |a GENETICS | ||
| 900 | |a HERBIVORY | ||
| 900 | |a HOST PARASITE INTERACTION | ||
| 900 | |a MANDUCA | ||
| 900 | |a METABOLISM | ||
| 900 | |a PARASITOLOGY | ||
| 900 | |a PHOTOSYNTHESIS | ||
| 900 | |a PHYSIOLOGY | ||
| 900 | |a TOBACCO | ||
| 900 | |a ANIMALS | ||
| 900 | |a CYCLOPENTANES | ||
| 900 | |a DOWN-REGULATION | ||
| 900 | |a HOST-PARASITE INTERACTIONS | ||
| 900 | |a OXYLIPINS | ||
| 900 | |a PLANT PROTEINS | ||
| 900 | |a HEXAPODA | ||
| 900 | |a NICOTIANA ATTENUATA | ||
| 900 | |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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