Plant immunity induced by COS-OGA elicitor is a cumulative process that involves salicylic acid

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Plant innate immunity offers considerable opportunities for plant protection but beside flagellin and chitin, not many molecules and their receptors have been extensively characterized and very few have successfully reached the field. COS-OGA, an elicitor that combines cationic chitosan oligomers (COS) with anionic pectin oligomers (OGA), efficiently protected tomato (Solanum lycopersicum) grown in greenhouse against powdery mildew (Leveillula taurica). Leaf proteomic analysis of plants sprayed with COS-OGA showed accumulation of Pathogenesis-Related proteins (PR), especially subtilisin-like proteases. qRT-PCR confirmed upregulation of PR-proteins and salicylic acid (SA)-related genes while expression of jasmonic acid/ethylene-associated genes was not modified. SA concentration and class III peroxidase activity were increased in leaves and appeared to be a cumulative process dependent on the number of sprayings with the elicitor. These results suggest a systemic acquired resistance (SAR) mechanism of action of the COS-OGA elicitor and highlight the importance of repeated applications to ensure efficient protection against disease.

langue originaleAnglais
Pages (de - à)60-70
Nombre de pages11
journalPlant Science
Volume247
Les DOIs
étatPublié - 1 juin 2016

Empreinte digitale

Plant Immunity
Salicylic Acid
Chitosan
chitosan
salicylic acid
immunity
Lycopersicon esculentum
Leveillula taurica
Flagellin
Subtilisin
flagellin
systemic acquired resistance
Proteins
Chitin
pathogenesis-related proteins
subtilisin
Solanum lycopersicum
jasmonic acid
chitin
resistance mechanisms

Citer ceci

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title = "Plant immunity induced by COS-OGA elicitor is a cumulative process that involves salicylic acid",
abstract = "Plant innate immunity offers considerable opportunities for plant protection but beside flagellin and chitin, not many molecules and their receptors have been extensively characterized and very few have successfully reached the field. COS-OGA, an elicitor that combines cationic chitosan oligomers (COS) with anionic pectin oligomers (OGA), efficiently protected tomato (Solanum lycopersicum) grown in greenhouse against powdery mildew (Leveillula taurica). Leaf proteomic analysis of plants sprayed with COS-OGA showed accumulation of Pathogenesis-Related proteins (PR), especially subtilisin-like proteases. qRT-PCR confirmed upregulation of PR-proteins and salicylic acid (SA)-related genes while expression of jasmonic acid/ethylene-associated genes was not modified. SA concentration and class III peroxidase activity were increased in leaves and appeared to be a cumulative process dependent on the number of sprayings with the elicitor. These results suggest a systemic acquired resistance (SAR) mechanism of action of the COS-OGA elicitor and highlight the importance of repeated applications to ensure efficient protection against disease.",
keywords = "COS-OGA, Leveillula taurica, Plant immunity, Salicylic acid, SAR, Subtilisin-like proteases",
author = "{van Aubel}, G{\'e}raldine and Pierre Cambier and Marc Dieu and {Van Cutsem}, Pierre",
year = "2016",
month = "6",
day = "1",
doi = "10.1016/j.plantsci.2016.03.005",
language = "English",
volume = "247",
pages = "60--70",
journal = "Plant Science",
issn = "0168-9452",
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TY - JOUR

T1 - Plant immunity induced by COS-OGA elicitor is a cumulative process that involves salicylic acid

AU - van Aubel, Géraldine

AU - Cambier, Pierre

AU - Dieu, Marc

AU - Van Cutsem, Pierre

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Plant innate immunity offers considerable opportunities for plant protection but beside flagellin and chitin, not many molecules and their receptors have been extensively characterized and very few have successfully reached the field. COS-OGA, an elicitor that combines cationic chitosan oligomers (COS) with anionic pectin oligomers (OGA), efficiently protected tomato (Solanum lycopersicum) grown in greenhouse against powdery mildew (Leveillula taurica). Leaf proteomic analysis of plants sprayed with COS-OGA showed accumulation of Pathogenesis-Related proteins (PR), especially subtilisin-like proteases. qRT-PCR confirmed upregulation of PR-proteins and salicylic acid (SA)-related genes while expression of jasmonic acid/ethylene-associated genes was not modified. SA concentration and class III peroxidase activity were increased in leaves and appeared to be a cumulative process dependent on the number of sprayings with the elicitor. These results suggest a systemic acquired resistance (SAR) mechanism of action of the COS-OGA elicitor and highlight the importance of repeated applications to ensure efficient protection against disease.

AB - Plant innate immunity offers considerable opportunities for plant protection but beside flagellin and chitin, not many molecules and their receptors have been extensively characterized and very few have successfully reached the field. COS-OGA, an elicitor that combines cationic chitosan oligomers (COS) with anionic pectin oligomers (OGA), efficiently protected tomato (Solanum lycopersicum) grown in greenhouse against powdery mildew (Leveillula taurica). Leaf proteomic analysis of plants sprayed with COS-OGA showed accumulation of Pathogenesis-Related proteins (PR), especially subtilisin-like proteases. qRT-PCR confirmed upregulation of PR-proteins and salicylic acid (SA)-related genes while expression of jasmonic acid/ethylene-associated genes was not modified. SA concentration and class III peroxidase activity were increased in leaves and appeared to be a cumulative process dependent on the number of sprayings with the elicitor. These results suggest a systemic acquired resistance (SAR) mechanism of action of the COS-OGA elicitor and highlight the importance of repeated applications to ensure efficient protection against disease.

KW - COS-OGA

KW - Leveillula taurica

KW - Plant immunity

KW - Salicylic acid

KW - SAR

KW - Subtilisin-like proteases

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U2 - 10.1016/j.plantsci.2016.03.005

DO - 10.1016/j.plantsci.2016.03.005

M3 - Article

AN - SCOPUS:84961282475

VL - 247

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EP - 70

JO - Plant Science

JF - Plant Science

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