« Previous Abstract"Exposure to particulate matter, volatile organic compounds, and other air pollutants inside patrol cars"    Next AbstractAnalysis of the steroid receptor of Achlya ambisexualis »

Plant Cell

Title:		Monoterpenes Support Systemic Acquired Resistance within and between Plants
Author(s):		Riedlmeier M; Ghirardo A; Wenig M; Knappe C; Koch K; Georgii E; Dey S; Parker JE; Schnitzler JP; Vlot AC;
Address:		"Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany. Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, D-85764 Neuherberg, Germany. Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, D-50829 Cologne, Germany. Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany corina.vlot@helmholtz-muenchen.de"
Journal Title:		Plant Cell
Year:		2017
Volume:		20170523
Issue:		6
Page Number:		1440 - 1459
DOI:		10.1105/tpc.16.00898
ISSN/ISBN:		1532-298X (Electronic) 1040-4651 (Print) 1040-4651 (Linking)
Abstract:		"This study investigates the role of volatile organic compounds in systemic acquired resistance (SAR), a salicylic acid (SA)-associated, broad-spectrum immune response in systemic, healthy tissues of locally infected plants. Gas chromatography coupled to mass spectrometry analyses of SAR-related emissions of wild-type and non-SAR-signal-producing mutant plants associated SAR with monoterpene emissions. Headspace exposure of Arabidopsis thaliana to a mixture of the bicyclic monoterpenes alpha-pinene and beta-pinene induced defense, accumulation of reactive oxygen species, and expression of SA- and SAR-related genes, including the SAR regulatory AZELAIC ACID INDUCED1 (AZI1) gene and three of its paralogs. Pinene-induced resistance was dependent on SA biosynthesis and signaling and on AZI1 Arabidopsis geranylgeranyl reductase1 mutants with reduced monoterpene biosynthesis were SAR-defective but mounted normal local resistance and methyl salicylate-induced defense responses, suggesting that monoterpenes act in parallel with SA The volatile emissions from SAR signal-emitting plants induced defense in neighboring plants, and this was associated with the presence of alpha-pinene, beta-pinene, and camphene in the emissions of the 'sender' plants. Our data suggest that monoterpenes, particularly pinenes, promote SAR, acting through ROS and AZI1, and likely function as infochemicals in plant-to-plant signaling, thus allowing defense signal propagation between neighboring plants"
Keywords:		"Arabidopsis/drug effects/*metabolism Arabidopsis Proteins/genetics/metabolism Bicyclic Monoterpenes Bridged Bicyclo Compounds/pharmacology Gene Expression Regulation, Plant/drug effects/genetics Immunity, Innate/drug effects Monoterpenes/*pharmacology Rea;"
Notes:		"MedlineRiedlmeier, Marlies Ghirardo, Andrea Wenig, Marion Knappe, Claudia Koch, Kerstin Georgii, Elisabeth Dey, Sanjukta Parker, Jane E Schnitzler, Jorg-Peter Vlot, A Corina eng England 2017/05/26 Plant Cell. 2017 Jun; 29(6):1440-1459. doi: 10.1105/tpc.16.00898. Epub 2017 May 23"