参与小生物合成的基因与葡萄藤的水应激反应有关
Rochelle Schlank1, David W Jeffery1, Catherine M Kidman2
1School of Agriculture, Food and Wine, and Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, South Australia, 5064, Australia.
The Plant journal : for cell and molecular biology
|December 13, 2025
概括
称为CLE9的小作为葡萄藤中的根到芽信号,调节土壤干燥期间的口腔关闭. 这项研究揭示了植物对水应激反应的新机制.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 土壤干燥会触发植物的应激反应,包括口腔关闭.
- CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE) 家族与植物发育和信号传递有关.
- 了解葡萄酒水应激信号对于葡萄种植至关重要.
研究的目的:
- 测试CLE调节葡萄藤在土壤干燥下葡萄树口腔关闭的假设.
- 研究特定的CLE (CLE1,CLE3,CLE6,CLE9) 在葡萄酒水应激反应中的作用.
- 阐明涉及CLE,酸 (ABA) 和液压导电的信号通路.
主要方法:
- 在盆栽的卡伯内特索维尼翁葡萄树上进行了受控的水应激实验.
- 测量叶子和茎的水潜力 (ΨL, ΨS).
- 评估根和叶子的液压导电量.
- 立口导电量的量化 (gs).
- 对西伦汁液中亚酸 (ABA) 水平的分析.
- 对CLE的基因表达分析和NCED1.
主要成果:
- 水压导致水的潜力和液压导电率下降,并且几乎完全关闭了口腔.
- 随着土壤的干燥,西汁ABA和CLE1,CLE3,CLE6和NCED1的转录增加.
- 在土壤干燥期间,CLE9基因表达在根和叶子上升调节,并在压力后的根部保持高水平.
- CLE9似乎是葡萄藤中土壤干燥的关键根发芽信号.
结论:
- 在葡萄酒对土壤干燥的反应中,CLE9作为根到芽信号发挥着重要作用.
- CLE,特别是CLE9,可能通过影响叶子ABA水平来间接调节口腔关闭.
- 建议在水压下采用CLE的葡萄酒液压和化学信号的模型.
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