Abstract
L.) primary and secondary metabolites have not been fully investigated. Therefore, the effects of foliar sprayed Si and Se and their combination on the concentration of phenols, selected metabolites involved in the phenol biosynthesis, and mineral elements concentrations were determined in olive leaves of the field-grown cultivar Leccino. During the summer period, leaves were foliar sprayed three times, after which were sampled 30 days after the corresponding application. In general, foliar treatment of Si or Se increased the concentrations of several predominant phenolic compounds, such as oleuropein, oleacein, and specific flavonoids. The effects were especially pronounced after the third application in the harvest time sampling time. Amino acids and other phenol precursors were also significantly affected. The effects were phenol-specific and depended on the treatment, sampling time, and treatment × sampling time interaction. The response of verbascoside to the applied treatments appeared to be closely linked to corresponding changes in its amino acid precursors, such as tyrosine, while its connection with tryptophan and IAA has to be cautiously considered. In contrast, for other phenolic compounds like secoiridoids, a clear interdependence with their precursors was not identified, likely due to the more complex nature of their biosynthesis. The effects on the concentrations of elements other than Se and Si were milder.
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Claims 6
Claim · model-written summary
Foliar treatment with Si or Se increased the concentrations of several predominant phenolic compounds in olive leaves, especially after the third application.
- Taxon
- olive
Olea europaeat0 - Material
- Leccinoe1
- Treatment
- foliar treatment of Si or See2
- Outcome
- concentrations of several predominant phenolic compounds, such as oleuropein, oleacein, and specific flavonoidse2
- Direction
- increasede2
- Qualifier
- especially pronounced after the third applicatione3
- Setting
- fielde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e1“in olive leaves of the field-grown cultivar Leccino”
e2“foliar treatment of Si or Se increased the concentrations of several predominant phenolic compounds, such as oleuropein, oleacein, and specific flavonoids”
e3“The effects were especially pronounced after the third application in the harvest time sampling time”
Claim · model-written summary
Amino acids and other phenol precursors in olive leaves were significantly affected by the foliar treatments.
- Taxon
- oliveOlea europaeat0
- Outcome
- Amino acids and other phenol precursorse4
- Qualifier
- significantly affectede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e4“Amino acids and other phenol precursors were also significantly affected”
Claim · model-written summary
The effects on olive leaf phenolics were phenol-specific and depended on treatment, sampling time and their interaction.
- Taxon
- oliveOlea europaeat0
- Outcome
- effectse5
- Qualifier
- phenol-specific and depended on the treatment, sampling time, and treatment × sampling time interactione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e5“The effects were phenol-specific and depended on the treatment, sampling time, and treatment × sampling time interaction”
Claim · model-written summary
The response of verbascoside in olive leaves appeared to be closely linked to changes in its precursor tyrosine.
- Taxon
- oliveOlea europaeat0
- Compound
- tyrosinee6
- Outcome
- response of verbascosidee6
- Qualifier
- closely linkede6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e6“The response of verbascoside to the applied treatments appeared to be closely linked to corresponding changes in its amino acid precursors, such as tyrosine”
Claim · model-written summary
For secoiridoids in olive leaves, no clear interdependence with their precursors was identified.
- Taxon
- oliveOlea europaeat0
- Compound
- secoiridoidse7
- Outcome
- interdependence with their precursorse7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e7“for other phenolic compounds like secoiridoids, a clear interdependence with their precursors was not identified”
Claim · model-written summary
Foliar Si or Se effects on the concentrations of elements other than Se and Si in olive leaves were milder.
- Taxon
- oliveOlea europaeat0
- Outcome
- effects on the concentrations of elements other than Se and Sie0
- Qualifier
- mildere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Olive Leaves”
e0“The effects on the concentrations of elements other than Se and Si were milder”
The same questions in other papers
silicon atom · quality: phytochemicals · Olea europaea (common olive)Results agree
1 paper in the same direction as this paper
- positive
application · quality: phytochemicals · Olea europaea (common olive)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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.