Abstract
Climate change scenarios predict an increase in mean air temperatures and in the frequency, intensity, and length of extreme temperature events in many wine-growing regions worldwide. Because elevated temperature has detrimental effects on berry growth and composition, it threatens the economic and environmental sustainability of wine production. Using Cabernet Sauvignon fruit-bearing cuttings, we investigated the effects of high temperature (HT) on grapevine berries through a label-free shotgun proteomic analysis coupled to a complementary metabolomic study. Among the 2,279 proteins identified, 592 differentially abundant proteins were found in berries exposed to HT. The gene ontology categories "stress," "protein," "secondary metabolism," and "cell wall" were predominantly altered under HT. High temperatures strongly impaired carbohydrate and energy metabolism, and the effects depended on the stage of development and duration of treatment. Transcript amounts correlated poorly with protein expression levels in HT berries, highlighting the value of proteomic studies in the context of heat stress. Furthermore, this work reveals that HT alters key proteins driving berry development and ripening. Finally, we provide a list of differentially abundant proteins that can be considered as potential markers for developing or selecting grape varieties that are better adapted to warmer climates or extreme heat waves.
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Claims 6
Claim · model-written summary
High temperature caused 592 berry proteins to differ in abundance among 2,279 identified proteins.
Not reportedComparatorDirection
Verbatim
e0“Among the 2,279 proteins identified, 592 differentially abundant proteins were found in berries exposed to HT.”
t0“grape berry metabolism”
Claim · model-written summary
High temperature predominantly altered stress, protein, secondary metabolism and cell wall gene ontology categories.
- Taxon
- grapet0
- Treatment
- HTe0
- Outcome
- gene ontology categories "stress," "protein," "secondary metabolism," and "cell wall"e0
- Direction
- alterede0
Not reportedComparator
Verbatim
e0“The gene ontology categories "stress," "protein," "secondary metabolism," and "cell wall" were predominantly altered under HT.”
t0“grape berry metabolism”
Claim · model-written summary
High temperatures strongly impaired carbohydrate and energy metabolism, depending on development stage and treatment duration.
- Taxon
- grapet0
- Treatment
- High temperaturese0
- Outcome
- carbohydrate and energy metabolisme0
- Direction
- impairede0
- Qualifier
- stage of development and duration of treatmente0
Not reportedComparator
Verbatim
e0“High temperatures strongly impaired carbohydrate and energy metabolism, and the effects depended on the stage of development and duration of treatment.”
t0“grape berry metabolism”
Claim · model-written summary
Transcript amounts correlated poorly with protein expression levels in heated berries.
Not reportedDirection
Verbatim
e0“Transcript amounts correlated poorly with protein expression levels in HT berries”
t0“grape berry metabolism”
Claim · model-written summary
High temperature altered proteins driving grape berry development and ripening.
- Taxon
- grapet0
- Treatment
- HTe0
- Outcome
- key proteins driving berry development and ripeninge0
- Direction
- alterse0
Not reportedComparator
Verbatim
e0“HT alters key proteins driving berry development and ripening”
t0“grape berry metabolism”
Claim · model-written summary
The study provides differentially abundant proteins as potential markers for heat adapted grape varieties.
Not reportedComparatorValue
Verbatim
e0“we provide a list of differentially abundant proteins that can be considered as potential markers for developing or selecting grape varieties that are better adapted to warmer climates or extreme heat waves”
t0“grape berry metabolism”
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