Abstract
In an attempt to gain information on the effect of trace elements on plants, experiments were conducted to test the effect of Hg/sup 2 +/ compounds on grapes. The grapevines were sprayed with HgSO/sub 4/ solutions. The oxidation-reduction potential, oxidation-reduction index and pH were recorded for leaves and berries. The effect of Hg on the activity of ascorbinadase, polyphenoloxidase, and peroxidase was recoreded. Under the influence of Hg the activity of these oxidizing-reducing enzymes (except in 2 cases of polyphenoloxidase at pH 5) at various growth stages was sustained at a higher level and was preserved for a longer period compared to the control. Especially notable was the positive effect of the trace element on the activity of ascorbinoxidase and peroxidase in an acid medium. 3 references, 3 tables.
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 3
Claim · model-written summary
Under Hg treatment, the activity of the oxidizing-reducing enzymes in grapes was sustained at a higher level than in the control at various growth stages, except in 2 cases of polyphenoloxidase at pH 5.
Verbatim
e0“compounds on grapes”
e1“Under the influence of Hg the activity of these oxidizing-reducing enzymes (except in 2 cases of polyphenoloxidase at pH 5) at various growth stages was sustained at a higher level and was preserved for a longer period compared to the control”
Claim · model-written summary
Under Hg treatment, the enzyme activity in grapes was preserved for a longer period than in the control.
Verbatim
e0“compounds on grapes”
e1“Under the influence of Hg the activity of these oxidizing-reducing enzymes (except in 2 cases of polyphenoloxidase at pH 5) at various growth stages was sustained at a higher level and was preserved for a longer period compared to the control”
Claim · model-written summary
The trace element Hg had a notably positive effect on the activity of ascorbinoxidase and peroxidase in an acid medium.
- Taxon
- grapese0
- Treatment
- the trace elemente2
- Outcome
- activity of ascorbinoxidase and peroxidasee2
- Direction
- positive effecte2
- Qualifier
- in an acid mediume2
Not reportedComparator
Verbatim
e0“compounds on grapes”
e2“Especially notable was the positive effect of the trace element on the activity of ascorbinoxidase and peroxidase in an acid medium”