Abstract
In Mediterranean regions, extreme weather conditions during the growing season may alter grapevine physiology and metabolism, thus modifying the quality of wines. The objective of this study was to investigate the effects of Ascophyllum nodosum treatments on plant physiology and berry metabolism in Vitis vinifera exposed to water stress. The experiment was performed on potted vines subjected to two irrigation regimes (well-watered, WW, and water stressed, WS) both associated with A. nodosum treatments (SWE), compared with control plants (CTRL). Gas exchanges, chlorophyll fluorescence, and water relations were monitored on SWE and CTRL leaves, both in WW and WS vines at three times. Moreover, the quantification of secondary metabolites and their partitioning were performed in berry skins. Plants treated with A. nodosum extract showed higher photosynthesis and stomatal conductance than CTRL in both irrigation regimes and maintained a better plant hydraulic conductivity at the end of the sampling period. In addition, secondary metabolites in berry skins and their partitioning were significantly affected by the treatments in both irrigation regimes. Our results suggest that foliar application of A. nodosum extract may help the acclimation of grapevines to post-veraison water stress, likely improving plant physiological and biochemical performances under environmental constraints.
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Claims 5
Claim · model-written summary
Extract treatment increased photosynthesis under both irrigation regimes.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- A. nodosum extracte0
- Outcome
- photosynthesise0
- Direction
- highere0
- Qualifier
- both irrigation regimese0
- Comparator
- CTRLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with A. nodosum extract showed higher photosynthesis and stomatal conductance than CTRL in both irrigation regimes”
t0“Vitis vinifera”
Claim · model-written summary
Extract treatment increased stomatal conductance under both irrigation regimes.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- A. nodosum extracte0
- Outcome
- stomatal conductancee0
- Direction
- highere0
- Qualifier
- both irrigation regimese0
- Comparator
- CTRLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with A. nodosum extract showed higher photosynthesis and stomatal conductance than CTRL in both irrigation regimes”
t0“Vitis vinifera”
Claim · model-written summary
Extract treatment improved hydraulic conductivity at the end of sampling.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- A. nodosum extracte0
- Outcome
- plant hydraulic conductivitye0
- Direction
- bettere0
- Qualifier
- at the end of the sampling periode0
- Comparator
- CTRLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants treated with A. nodosum extract showed higher photosynthesis and stomatal conductance than CTRL in both irrigation regimes and maintained a better plant hydraulic conductivity at the end of the sampling period”
t0“Vitis vinifera”
Claim · model-written summary
Treatments significantly affected berry skin secondary metabolites.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- the treatmentse0
- Outcome
- secondary metabolites in berry skinse0
- Qualifier
- both irrigation regimese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“secondary metabolites in berry skins and their partitioning were significantly affected by the treatments in both irrigation regimes”
t0“Vitis vinifera”
Claim · model-written summary
Treatments significantly affected secondary metabolite partitioning.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- the treatmentse0
- Outcome
- their partitioninge0
- Qualifier
- both irrigation regimese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“secondary metabolites in berry skins and their partitioning were significantly affected by the treatments in both irrigation regimes”
t0“Vitis vinifera”
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botanical · physiology: gas exchange · Vitis vinifera (wine grape)Results agree
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botanical · physiology: photosynthesis · Vitis vinifera (wine grape)Results agree
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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.