在不同的温度调节下,在异味葡萄葡萄中冷适应的生理和转录学特征
Hongrui Wang1, Al P Kovaleski2, Jason P Londo1
1School of Integrative Plant Science, Horticulture Section, Cornell University-Cornell AgriTech, Geneva, NY, USA.
温度循环,而不是恒定温度,有效地诱导葡萄藤芽的寒冷适应,提高结耐受性. 这一发现对于保护葡萄树免受气候变化对葡萄种植的影响至关重要.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 适应气候变化 适应气候变化
背景情况:
- 在凉爽的气候下葡萄藤的生存取决于寒冷的适应和冷耐受性发展.
- 气候变化导致温度波动,破坏休眠状态并威胁到葡萄酒行业.
研究的目的:
- 为了研究不同温度调节如何影响葡萄藤芽的寒冷适应.
- 为了识别 Endodormant 芽中温度诱导的适应背后的分子机制.
主要方法:
- 控制环境实验,使用不同的温度调节 (恒定与循环).
- 结耐受性的生理学评估.
- 用RNA测序 (RNA-seq) 来对内香芽进行转录基因分析.
主要成果:
- 恒定温度 (温暖,中度或凉爽) 并没有诱导寒冷适应.
- 温度循环 (7±5°C) 显著增加了5°C的结耐受性.
- 确定了乙烯,碳水化合物代谢和蛋白质代谢在适应过程中的潜在作用.
结论:
- 温度循环对于引发葡萄藤芽的寒冷适应至关重要.
- 了解寒冷适应的遗传基础对于葡萄藤对气候变化的弹性至关重要.
- 需要进一步的研究来概括在葡萄树组织和表观阶段的发现.
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