Study on function of low temperature signal on dormancy regulation in deciduous fruit trees

低温信号对落叶果树休眠调控作用的研究

• 批准号: 22380019
• 负责人: SUGAYA Sumiko
• 金额: $ 8.07万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22380019/
• 关键词: 果樹; 休眠; 低温; メタボローム; 代謝; ニホンナシ; 遺伝子発現; 落葉果樹; 植物ホルモン

Effects of low temperature on physiology of flower bud during dormancy period were investigated using Japanese pears. Insufficient amount of low temperature during endo-dormancy, bud abortion and necrosis were found in flowering time. Metabolome analysis indicated that metabolites in flower buds of 600CH (chilling hours) and 750CH were different from those in 0CH and 300CH. PCA analysis revealed that phosphoric acids and organic acid contents would be related to chilling. Enzyme activities involved in sugar metabolism are studied during endo-dormancy and effects of hydrogen cyanamide and potassium nitrate were investigated.

以日本梨为研究对象，研究了低温对休眠期花芽生理的影响。花期内低温量不足，芽败育和坏死。代谢组学分析表明，600CH（冷却时间）和750CH的花蕾代谢产物与0CH和300CH的花蕾代谢产物不同。主成分分析表明，有机酸和磷酸含量与低温有关。研究了休眠期间参与糖代谢的酶活性，并研究了氰酰胺氢和硝酸钾的影响。