Abstract
Benzothiadiazole (BTH) and methyl jasmonate (MeJ) have been described as exogenous elicitors of some plant defense compounds, polyphenols among them. Given that they activate different arrays of biochemical reactions to induce resistance, the objective of this study was to determine whether the joint application of BTH and MeJ to grape clusters affects the level of the main flavonoid compounds in grapes and in the resulting wines. The results are compared with those obtained when abscisic acid (ABA), a plant growth regulator involved in several physiological processes, was sprayed in the same vineyard. The results obtained indicated that, although the application of ABA increased the content of skin anthocyanins and tannins, these positive effects were not reflected in the wines made from these grapes. BTH+MeJ-treated grapes also presented higher anthocyanin and flavonol contents, and in this case, their wines presented better chromatic characteristics that the wine made from control grapes.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
ABA increased grape skin anthocyanins and tannins.
Not reportedComparator
Verbatim
e0“the application of ABA increased the content of skin anthocyanins and tannins”
t0“Grapes”
Claim · model-written summary
ABA gains in grape phenolics were not reflected in the resulting wines.
Not reportedComparatorDirection
Verbatim
e0“these positive effects were not reflected in the wines made from these grapes”
e1“the application of ABA”
t0“Grapes”
Claim · model-written summary
BTH plus MeJ increased grape anthocyanin and flavonol contents.
Not reportedComparator
Verbatim
e0“BTH+MeJ-treated grapes also presented higher anthocyanin and flavonol contents”
Claim · model-written summary
Wines from BTH plus MeJ treated grapes had better chromatic characteristics than control wine.
Verbatim
e0“their wines presented better chromatic characteristics that the wine made from control grapes”
e1“BTH+MeJ-treated grapes”
The same questions in other papers
(+)-abscisic acid · quality: phytochemicals · VitisResults differ
26 papers in the same direction as this paper
- positive
- positive
- positive
23 papers more in this group
See all 27 papers →(-)-methyl jasmonate · quality: phytochemicals · VitisPositive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
2 papers more in this group
See all 6 papers →acibenzolar-S-methyl · quality: phytochemicals · VitisResults agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.