Alternative Oxidase in Resistance to Biotic Stresses: Nicotiana attenuata AOX Contributes to Resistance to a Pathogen and a Piercing-Sucking Insect But Not Manduca sexta Larvae1[W][OA]
Identifieur interne : 001411 ( Main/Exploration ); précédent : 001410; suivant : 001412Alternative Oxidase in Resistance to Biotic Stresses: Nicotiana attenuata AOX Contributes to Resistance to a Pathogen and a Piercing-Sucking Insect But Not Manduca sexta Larvae1[W][OA]
Auteurs : Lu Zhang ; Youngjoo Oh ; Hongyu Li ; Ian T. Baldwin ; Ivan GalisSource :
- Plant Physiology [ 0032-0889 ] ; 2012.
Abstract
The role of the alternative respiratory pathway in the protection of plants against biotic stress was examined in transgenic tobacco (
Url:
DOI: 10.1104/pp.112.200865
PubMed: 22961128
PubMed Central: 3490609
Affiliations:
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Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Alternative Oxidase in Resistance to Biotic Stresses: <italic>Nicotiana attenuata</italic>
AOX Contributes to Resistance to a Pathogen and a Piercing-Sucking Insect But Not <italic>Manduca sexta</italic>
Larvae<xref ref-type="author-notes" rid="fn1"><sup>1</sup>
</xref>
<xref ref-type="author-notes" rid="fn2"><sup>[W]</sup>
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<xref ref-type="author-notes" rid="fn3"><sup>[OA]</sup>
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<author><name sortKey="Zhang, Lu" sort="Zhang, Lu" uniqKey="Zhang L" first="Lu" last="Zhang">Lu Zhang</name>
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<author><name sortKey="Oh, Youngjoo" sort="Oh, Youngjoo" uniqKey="Oh Y" first="Youngjoo" last="Oh">Youngjoo Oh</name>
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<author><name sortKey="Li, Hongyu" sort="Li, Hongyu" uniqKey="Li H" first="Hongyu" last="Li">Hongyu Li</name>
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<author><name sortKey="Baldwin, Ian T" sort="Baldwin, Ian T" uniqKey="Baldwin I" first="Ian T." last="Baldwin">Ian T. Baldwin</name>
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<author><name sortKey="Galis, Ivan" sort="Galis, Ivan" uniqKey="Galis I" first="Ivan" last="Galis">Ivan Galis</name>
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AOX Contributes to Resistance to a Pathogen and a Piercing-Sucking Insect But Not <italic>Manduca sexta</italic>
Larvae<xref ref-type="author-notes" rid="fn1"><sup>1</sup>
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<xref ref-type="author-notes" rid="fn2"><sup>[W]</sup>
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<xref ref-type="author-notes" rid="fn3"><sup>[OA]</sup>
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<author><name sortKey="Zhang, Lu" sort="Zhang, Lu" uniqKey="Zhang L" first="Lu" last="Zhang">Lu Zhang</name>
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<author><name sortKey="Oh, Youngjoo" sort="Oh, Youngjoo" uniqKey="Oh Y" first="Youngjoo" last="Oh">Youngjoo Oh</name>
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<author><name sortKey="Li, Hongyu" sort="Li, Hongyu" uniqKey="Li H" first="Hongyu" last="Li">Hongyu Li</name>
</author>
<author><name sortKey="Baldwin, Ian T" sort="Baldwin, Ian T" uniqKey="Baldwin I" first="Ian T." last="Baldwin">Ian T. Baldwin</name>
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<author><name sortKey="Galis, Ivan" sort="Galis, Ivan" uniqKey="Galis I" first="Ivan" last="Galis">Ivan Galis</name>
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<series><title level="j">Plant Physiology</title>
<idno type="ISSN">0032-0889</idno>
<idno type="eISSN">1532-2548</idno>
<imprint><date when="2012">2012</date>
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<front><div type="abstract" xml:lang="en"><p>The role of the alternative respiratory pathway in the protection of plants against biotic stress was examined in transgenic tobacco (<italic>Nicotiana attenuata</italic>
) plants (irAOX) silenced in the expression of <italic>ALTERNATIVE OXIDASE</italic>
(<italic>AOX</italic>
) gene. Wild-type and irAOX plants were independently challenged with (1) chewing herbivores (<italic>Manduca sexta</italic>
), (2) piercing-sucking insects (<italic>Empoasca</italic>
spp.), and (3) bacterial pathogens (<italic>Pseudomonas syringae</italic>
pv <italic>tomato</italic>
DC3000), showing that all these treatments can strongly elicit accumulation of <italic>AOX</italic>
gene transcripts in wild-type plants. When <italic>N. attenuata</italic>
chemical defenses and resistance were examined, irAOX plants showed wild-type levels of defense-related phytohormones, secondary metabolites, and resistance to <italic>M. sexta</italic>
. In contrast, piercing-sucking leafhoppers (<italic>Empoasca</italic>
spp.) caused more leaf damage and induced significantly higher salicylic acid levels in irAOX compared with wild-type plants in the field and/or glasshouse. Subsequently, irAOX plants accumulated lower levels of defense metabolites, 17-hydroxygeranyllinalool diterpene glycosides, caffeoylputrescine, and nicotine compared with wild-type plants under prolonged attack of <italic>Empoasca</italic>
spp. in the glasshouse. Finally, an accelerated cell death phenotype was observed in irAOX plants infected with <italic>P. syringae</italic>
, which correlated with higher levels of salicylic acid and hydrogen peroxide levels in pathogen-infected irAOX compared with wild-type leaves. Overall, the AOX-associated changes in phytohormone and/or redox levels appear to support the resistance of <italic>N. attenuata</italic>
plants against cell piercing-sucking insects and modulate the progression of cell death in pathogen-infected tissues but are not effective against rapidly feeding specialist herbivore <italic>M. sexta</italic>
.</p>
</div>
</front>
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<affiliations><list></list>
<tree><noCountry><name sortKey="Baldwin, Ian T" sort="Baldwin, Ian T" uniqKey="Baldwin I" first="Ian T." last="Baldwin">Ian T. Baldwin</name>
<name sortKey="Galis, Ivan" sort="Galis, Ivan" uniqKey="Galis I" first="Ivan" last="Galis">Ivan Galis</name>
<name sortKey="Li, Hongyu" sort="Li, Hongyu" uniqKey="Li H" first="Hongyu" last="Li">Hongyu Li</name>
<name sortKey="Oh, Youngjoo" sort="Oh, Youngjoo" uniqKey="Oh Y" first="Youngjoo" last="Oh">Youngjoo Oh</name>
<name sortKey="Zhang, Lu" sort="Zhang, Lu" uniqKey="Zhang L" first="Lu" last="Zhang">Lu Zhang</name>
</noCountry>
</tree>
</affiliations>
</record>
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