Transformed tobacco (Nicotiana tabacum) plants over-expressing a peroxisome proliferator-activated receptor gene from Xenopus laevis (xPPARα) show increased susceptibility to infection by virulent Pseudomonas syringae pathogens

Transgenic tobacco plants capable of over-expressing Xenopus PPARα (xPPARα), a transcription factor known to be required for peroxisome proliferation in animals, were recently generated. These plants (herewith referred to as PPAR-OE) were found to have increased peroxisome abundance, higher peroxiso...

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Veröffentlicht in:Planta 2011-03, Vol.233 (3), p.507-521
Hauptverfasser: Valenzuela-Soto, José Humberto, Iruegas-Bocardo, Fernanda, Martínez-Gallardo, Norma Angélica, Molina-Torres, Jorge, Gómez-Lim, Miguel Ángel, Délano-Frier, John Paul
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container_title Planta
container_volume 233
creator Valenzuela-Soto, José Humberto
Iruegas-Bocardo, Fernanda
Martínez-Gallardo, Norma Angélica
Molina-Torres, Jorge
Gómez-Lim, Miguel Ángel
Délano-Frier, John Paul
description Transgenic tobacco plants capable of over-expressing Xenopus PPARα (xPPARα), a transcription factor known to be required for peroxisome proliferation in animals, were recently generated. These plants (herewith referred to as PPAR-OE) were found to have increased peroxisome abundance, higher peroxisomal acyl-CoA oxidase and catalase activity and modified fatty acid metabolism. Further characterization of PPAR-OE plants revealed a higher susceptibility to virulent and a partial loss of resistance to avirulent Pseudomonas syringae pathogens, whereas the basal resistance response remained unaffected. Biochemical- and defense-related gene expression analyses showed that increased susceptibility to bacterial invasion coincided with the generalized reduction in H₂O₂ and salicylic acid (SA) levels observed within the first 24 h of bacterial contact. Decreased H₂O₂ levels were correlated with modified activity levels of catalase and other antioxidant enzymes. A correspondence between a rapid (within 1-24 hpi; ACCO and AOC) and sustained increase (up to 6 days pi; ACCO) in the expression levels of ethylene (ACCO) and jasmonic acid (AOC) biosynthetic genes and a higher susceptibility to virulent bacterial invasion was also observed in PPAR-OE plants. Conversely, no apparent differences in the short- and/or long-term expression levels of markers for the hypersensitive-response, oxidative burst and systemic-acquired resistance were observed between wild type and PPAR-OE plants. The results suggest that peroxisome proliferation could lead to increased susceptibility to bacterial pathogens in tobacco by altering the redox balance of the plant and the expression pattern of key defense signaling pathway genes.
doi_str_mv 10.1007/s00425-010-1314-7
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These plants (herewith referred to as PPAR-OE) were found to have increased peroxisome abundance, higher peroxisomal acyl-CoA oxidase and catalase activity and modified fatty acid metabolism. Further characterization of PPAR-OE plants revealed a higher susceptibility to virulent and a partial loss of resistance to avirulent Pseudomonas syringae pathogens, whereas the basal resistance response remained unaffected. Biochemical- and defense-related gene expression analyses showed that increased susceptibility to bacterial invasion coincided with the generalized reduction in H₂O₂ and salicylic acid (SA) levels observed within the first 24 h of bacterial contact. Decreased H₂O₂ levels were correlated with modified activity levels of catalase and other antioxidant enzymes. A correspondence between a rapid (within 1-24 hpi; ACCO and AOC) and sustained increase (up to 6 days pi; ACCO) in the expression levels of ethylene (ACCO) and jasmonic acid (AOC) biosynthetic genes and a higher susceptibility to virulent bacterial invasion was also observed in PPAR-OE plants. Conversely, no apparent differences in the short- and/or long-term expression levels of markers for the hypersensitive-response, oxidative burst and systemic-acquired resistance were observed between wild type and PPAR-OE plants. 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Plant and forest protection ; Plant cells ; Plant Diseases - genetics ; Plant Diseases - immunology ; Plant Diseases - microbiology ; Plant Immunity ; Plant interaction ; Plant Leaves - metabolism ; Plant Leaves - microbiology ; Plant Sciences ; Plants ; Plants, Genetically Modified - metabolism ; Plants, Genetically Modified - microbiology ; PPAR alpha - genetics ; PPAR alpha - metabolism ; Pseudomonas syringae ; Pseudomonas syringae - pathogenicity ; Reactive oxygen species ; salicylic acid ; Salicylic Acid - analysis ; Superoxide Dismutase - metabolism ; Time Factors ; Tobacco ; Xenopus Proteins - genetics ; Xenopus Proteins - metabolism</subject><ispartof>Planta, 2011-03, Vol.233 (3), p.507-521</ispartof><rights>Springer-Verlag 2010</rights><rights>2015 INIST-CNRS</rights><rights>Springer-Verlag 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-9a046b316248dd2c3acb051cb5c48019dc7b41d8c2ab8ca15239905fdc70c9a03</citedby><cites>FETCH-LOGICAL-c446t-9a046b316248dd2c3acb051cb5c48019dc7b41d8c2ab8ca15239905fdc70c9a03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/23883846$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/23883846$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,41488,42557,51319,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=23928461$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21104271$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Valenzuela-Soto, José Humberto</creatorcontrib><creatorcontrib>Iruegas-Bocardo, Fernanda</creatorcontrib><creatorcontrib>Martínez-Gallardo, Norma Angélica</creatorcontrib><creatorcontrib>Molina-Torres, Jorge</creatorcontrib><creatorcontrib>Gómez-Lim, Miguel Ángel</creatorcontrib><creatorcontrib>Délano-Frier, John Paul</creatorcontrib><title>Transformed tobacco (Nicotiana tabacum) plants over-expressing a peroxisome proliferator-activated receptor gene from Xenopus laevis (xPPARα) show increased susceptibility to infection by virulent Pseudomonas syringae pathogens</title><title>Planta</title><addtitle>Planta</addtitle><addtitle>Planta</addtitle><description>Transgenic tobacco plants capable of over-expressing Xenopus PPARα (xPPARα), a transcription factor known to be required for peroxisome proliferation in animals, were recently generated. 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A correspondence between a rapid (within 1-24 hpi; ACCO and AOC) and sustained increase (up to 6 days pi; ACCO) in the expression levels of ethylene (ACCO) and jasmonic acid (AOC) biosynthetic genes and a higher susceptibility to virulent bacterial invasion was also observed in PPAR-OE plants. Conversely, no apparent differences in the short- and/or long-term expression levels of markers for the hypersensitive-response, oxidative burst and systemic-acquired resistance were observed between wild type and PPAR-OE plants. 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Psychology</topic><topic>Gene Expression Regulation, Plant</topic><topic>Hydrogen</topic><topic>Hydrogen peroxide</topic><topic>Hydrogen Peroxide - analysis</topic><topic>Infections</topic><topic>Leaves</topic><topic>Life Sciences</topic><topic>Nicotiana - genetics</topic><topic>Nicotiana - metabolism</topic><topic>Nicotiana - microbiology</topic><topic>Original Article</topic><topic>Oxidoreductases - metabolism</topic><topic>Oxylipins - analysis</topic><topic>Pathogens</topic><topic>Peroxidases - metabolism</topic><topic>Peroxisome proliferation</topic><topic>Peroxisome proliferation-associated receptor</topic><topic>Peroxisomes</topic><topic>Peroxisomes - metabolism</topic><topic>Phytopathology. Animal pests. 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A correspondence between a rapid (within 1-24 hpi; ACCO and AOC) and sustained increase (up to 6 days pi; ACCO) in the expression levels of ethylene (ACCO) and jasmonic acid (AOC) biosynthetic genes and a higher susceptibility to virulent bacterial invasion was also observed in PPAR-OE plants. Conversely, no apparent differences in the short- and/or long-term expression levels of markers for the hypersensitive-response, oxidative burst and systemic-acquired resistance were observed between wild type and PPAR-OE plants. The results suggest that peroxisome proliferation could lead to increased susceptibility to bacterial pathogens in tobacco by altering the redox balance of the plant and the expression pattern of key defense signaling pathway genes.</abstract><cop>Berlin/Heidelberg</cop><pub>Berlin/Heidelberg : Springer-Verlag</pub><pmid>21104271</pmid><doi>10.1007/s00425-010-1314-7</doi><tpages>15</tpages></addata></record>
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1432-2048
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recordid cdi_proquest_journals_853338208
source MEDLINE; SpringerLink Journals; JSTOR Archive Collection A-Z Listing
subjects Acyl-CoA Oxidase
Agriculture
Animals
Ascorbate Peroxidases
Bacterial plant pathogens
Biological and medical sciences
Biomarkers - metabolism
Biomedical and Life Sciences
Catalase - metabolism
Cyclopentanes - analysis
Disease Susceptibility
Ecology
Forestry
Fundamental and applied biological sciences. Psychology
Gene Expression Regulation, Plant
Hydrogen
Hydrogen peroxide
Hydrogen Peroxide - analysis
Infections
Leaves
Life Sciences
Nicotiana - genetics
Nicotiana - metabolism
Nicotiana - microbiology
Original Article
Oxidoreductases - metabolism
Oxylipins - analysis
Pathogens
Peroxidases - metabolism
Peroxisome proliferation
Peroxisome proliferation-associated receptor
Peroxisomes
Peroxisomes - metabolism
Phytopathology. Animal pests. Plant and forest protection
Plant cells
Plant Diseases - genetics
Plant Diseases - immunology
Plant Diseases - microbiology
Plant Immunity
Plant interaction
Plant Leaves - metabolism
Plant Leaves - microbiology
Plant Sciences
Plants
Plants, Genetically Modified - metabolism
Plants, Genetically Modified - microbiology
PPAR alpha - genetics
PPAR alpha - metabolism
Pseudomonas syringae
Pseudomonas syringae - pathogenicity
Reactive oxygen species
salicylic acid
Salicylic Acid - analysis
Superoxide Dismutase - metabolism
Time Factors
Tobacco
Xenopus Proteins - genetics
Xenopus Proteins - metabolism
title Transformed tobacco (Nicotiana tabacum) plants over-expressing a peroxisome proliferator-activated receptor gene from Xenopus laevis (xPPARα) show increased susceptibility to infection by virulent Pseudomonas syringae pathogens
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