Abstract
Introduction: ) to elaborate strategies for a sustainable viticulture. Methods: Here, we compared physiological and biochemical responses of two salt-tolerant species: a wild grapevine genotype "Tebaba" from our previous studies and the conventional rootstock "1103 Paulsen". Interestingly, our physio-biochemical results showed that under 150mM NaCl, "Tebaba" maintains higher leaf osmotic potential, lower Na+/K+ ratio and a significant peaked increase of polyphenol content at the first 8h of salinity stress. This behavior allowed to hypothesis a drastic repatterning of metabolism in "Tebaba's" roots following a biphasic response. In order to deepen our understanding on the "Tebaba" salt tolerance mechanism, we investigated a time-dependent transcriptomic analysis covering three sampling times, 8h, 24h and 48h. Results: The dynamic analysis indicated that "Tebaba" root cells detect and respond on a large scale within 8h to an accumulation of ROS by enhancing a translational reprogramming process and inducing the transcripts of glycolytic metabolism and flavonoids biosynthesis as a predominate non-enzymatic scavenging process. Afterwards, there is a transition to a largely gluconeogenic stage followed by a combined response mechanism based on cell wall remodeling and lignin biosynthesis with an efficient osmoregulation between 24 and 48 h. Discussion: This investigation explored for the first time in depth the established cross-talk between the physiological, biochemical and transcriptional regulators contributing to propose a hypothetical model of the dynamic salt mechanism tolerance of wild grapevines. In summary, these findings allowed further understanding of the genetic regulation mechanism of salt-tolerance in V. sylvestris and identified specific candidate genes valuable for appropriate breeding strategies.
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Claims 8
Claim · model-written summary
Under 150mM NaCl, Tebaba had higher leaf osmotic potential than the rootstock comparison.
- Taxon
- wild grapevinet0
- Material
- Tebabae0
- Treatment
- 150mM NaCle0
- Outcome
- leaf osmotic potentiale0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“under 150mM NaCl, "Tebaba" maintains higher leaf osmotic potential”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
Under 150mM NaCl, Tebaba had a lower Na+/K+ ratio.
Not reportedComparator
Verbatim
e0“under 150mM NaCl, "Tebaba" maintains higher leaf osmotic potential, lower Na+/K+ ratio”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
Tebaba polyphenol content peaked significantly in the first 8h of salinity stress.
- Taxon
- wild grapevinet0
- Treatment
- salinity stresse0
- Outcome
- polyphenol contente0
- Direction
- increasee0
- Qualifier
- first 8he0
Not reportedComparator
Verbatim
e0“a significant peaked increase of polyphenol content at the first 8h of salinity stress”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
Tebaba root cells responded within 8h to ROS accumulation with translational reprogramming.
Verbatim
e0“"Tebaba" root cells detect and respond on a large scale within 8h to an accumulation of ROS by enhancing a translational reprogramming process”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
Tebaba root cells induced transcripts of glycolytic metabolism and flavonoid biosynthesis within 8h.
Verbatim
e0“inducing the transcripts of glycolytic metabolism and flavonoids biosynthesis as a predominate non-enzymatic scavenging process”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
The response then transitioned to a largely gluconeogenic stage.
Verbatim
e0“there is a transition to a largely gluconeogenic stage”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
Between 24 and 48 h the response involved cell wall remodeling, lignin biosynthesis and osmoregulation.
Verbatim
e0“a combined response mechanism based on cell wall remodeling and lignin biosynthesis with an efficient osmoregulation between 24 and 48 h”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
Claim · model-written summary
The study identified candidate genes for breeding salt tolerant grapevines.
Verbatim
e0“identified specific candidate genes valuable for appropriate breeding strategies”
t0“wild grapevine (Vitis vinifera subsp. sylvestris)”
The same questions in other papers
sodium chloride · physiology: water · VitisPositive and negative results
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salinity · quality: phytochemicals · VitisResults differ
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
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2 papers more in this group
See all 6 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.