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Vine in Peril: Discovery of Cold-Sensitivity Gene in Grapes Offers New Clues

Summary by Newswise
Grapevines, widely valued for their fruit and wine, are especially vulnerable to cold temperatures. A new study has uncovered a key genetic factor that actually weakens the plant's natural defense against freezing stress. The gene, VviPUB19, was found to reduce cold tolerance by promoting the degradation of proteins that usually protect the plant under low temperatures. Tests in both grape and Arabidopsis confirmed that plants with higher levels…
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Newswise broke the news in Charlottesville, United States on Friday, June 6, 2025.
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