Abstract
Climate change is expected to affect grapevine physiology, berry quality, and yield in the Douro Demarcated Region (DDR). In this study, nettle (NE) and Japanese knotweed (JKE) extracts were tested to verify their biostimulant effect on the physiological and biochemical parameters of grapevine leaves and in vine yields. In fact, some parameters were improved after foliar application of the plant extracts, namely the photosynthetic activity and consequently, the levels of photosynthetic pigments (Clb), starch, and total soluble sugars. We also observed a reduction in lipid peroxidation, which could play a crucial role in protecting cell membranes from oxidative damage induced by the climatic conditions prevalent in this region. Therefore, we confirmed that the foliar application of plant extracts, along with the enhancement of secondary metabolites and the upregulation of plant defense genes, as previously reported, resulted in the enhancement of grapevine physiology, while also increasing the yield at harvest. In the future, these plant extracts could serve as a vital tool for winegrowers in mitigating the effects of expected changes in climatic conditions.
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Claims 6
Claim · model-written summary
Foliar plant extracts improved photosynthetic activity and chlorophyll b levels.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- foliar application of the plant extractse0
- Outcome
- photosynthetic activity and consequently, the levels of photosynthetic pigments (Clb)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In fact, some parameters were improved after foliar application of the plant extracts, namely the photosynthetic activity and consequently, the levels of photosynthetic pigments (Clb), starch, and total soluble sugars.”
t0“Vitis vinifera”
Claim · model-written summary
Foliar plant extracts improved starch and soluble sugar levels.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- foliar application of the plant extractse0
- Outcome
- starch, and total soluble sugarse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In fact, some parameters were improved after foliar application of the plant extracts, namely the photosynthetic activity and consequently, the levels of photosynthetic pigments (Clb), starch, and total soluble sugars.”
t0“Vitis vinifera”
Claim · model-written summary
Plant extracts reduced lipid peroxidation.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- foliar application of the plant extractse1
- Outcome
- lipid peroxidatione0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We also observed a reduction in lipid peroxidation, which could play a crucial role in protecting cell membranes from oxidative damage induced by the climatic conditions prevalent in this region.”
e1“In fact, some parameters were improved after foliar application of the plant extracts”
t0“Vitis vinifera”
Claim · model-written summary
Reduced lipid peroxidation could protect membranes from climatic oxidative damage.
- Taxon
- Vitis viniferaVitis viniferat0
- Outcome
- protecting cell membranes from oxidative damagee0
- Qualifier
- reduction in lipid peroxidatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We also observed a reduction in lipid peroxidation, which could play a crucial role in protecting cell membranes from oxidative damage induced by the climatic conditions prevalent in this region.”
t0“Vitis vinifera”
Claim · model-written summary
Foliar extracts increased grapevine yield at harvest.
- Organ / stage
- harveste0
- Treatment
- foliar application of plant extractse0
- Outcome
- yielde0
- Direction
- increasinge0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, we confirmed that the foliar application of plant extracts, along with the enhancement of secondary metabolites and the upregulation of plant defense genes, as previously reported, resulted in the enhancement of grapevine physiology, while also increasing the yield at harvest.”
Claim · model-written summary
The extracts could help winegrowers mitigate future climatic changes.
- Taxon
- Vitis viniferaVitis viniferat0
- Outcome
- plant extractse0
- Qualifier
- mitigating the effects of expected changes in climatic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the future, these plant extracts could serve as a vital tool for winegrowers in mitigating the effects of expected changes in climatic conditions.”
t0“Vitis vinifera”
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