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Alterations in grapevine leaf metabolism occur prior to esca apoplexy appearance.
Mol. Plant Microbe Interact. 30, 946-959 (2017)
Esca disease is one of the major grapevine trunk diseases in Europe and the aetioloy is complex since several inhabiting fungi are identified to be associated with this disease. Among the foliar symptom expression, apoplectic form may be distinguished and characterized by sudden dieback of shoots, leaf drop and shriveling of grape clusters in few days that can ultimately induce the plant death. To further understand this drastic event, we conducted transcriptomic and metabolomic analyses to characterize responses of leaves during the period preceding symptom appearance (twenty and seven days before foliar symptoms expression) and at the day of apoplexy expression. Transcriptomic and metabolomic provide signatures for the apoplectic leaves and most of changes concern the metabolism of carbohydrates, amino acids, and phenylpropanoids. Deciphering on glutathione-S-transferase, its preferential location in phloem, correlated with the upregulation of GST genes and a decrease of the glutathione level, offer further support to the putative role of glutathione during apoplexy expression.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Glutathione-s-transferase; Botrytis-cinerea; Cabernet-sauvignon; Trunk Diseases; Leaves; Defense; Expression; Plants; Symptoms; Cloning
ISSN (print) / ISBN 0894-0282
Quellenangaben Volume: 30, Issue: 12, Pages: 946-959
Publisher American Phytopathological Society
Publishing Place St Paul
Institute(s) Research Unit Analytical BioGeoChemistry (BGC)