Abstract
Esca disease is one of the major grapevine trunk diseases in Europe and the etiology is complex, since several inhabiting fungi are identified to be associated with this disease. Among the foliar symptom expressions, the apoplectic form may be distinguished and characterized by sudden dieback of shoots, leaf drop, and shriveling of grape clusters in a 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 (20 and 7 days before foliar symptom expression) and at the day of apoplexy expression. Transcriptomic and metabolomic analyses provide signatures for the apoplectic leaves and most changes concerning the metabolism of carbohydrates, amino acids, and phenylpropanoids. In deciphering glutathione-S-transferase (GST), its preferential location in phloem, correlated with the upregulation of GST genes and a decrease of the glutathione level, offers further support to the putative role of glutathione during apoplexy expression.
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Claims 4
Claim · model-written summary
Apoplectic grapevine leaves show changes in carbohydrate, amino acid and phenylpropanoid metabolism
- Organ / stage
- apoplectic leavese0
- Outcome
- metabolism of carbohydrates, amino acids, and phenylpropanoidse0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grapevine Leaf Metabolism”
e0“Transcriptomic and metabolomic analyses provide signatures for the apoplectic leaves and most changes concerning the metabolism of carbohydrates, amino acids, and phenylpropanoids”
Claim · model-written summary
Upregulation of GST genes is correlated with a decrease in glutathione level in grapevine leaves
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grapevine Leaf Metabolism”
e1“correlated with the upregulation of GST genes and a decrease of the glutathione level”
Claim · model-written summary
Glutathione-S-transferase (GST) is preferentially located in grapevine phloem
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grapevine Leaf Metabolism”
e2“In deciphering glutathione-S-transferase (GST), its preferential location in phloem”
Claim · model-written summary
Glutathione may play a putative role during esca apoplexy expression in grapevine
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grapevine Leaf Metabolism”
e3“offers further support to the putative role of glutathione during apoplexy expression”