Regulation of the transition from active growth to dormancy in white spruce trees

白云杉从活跃生长到休眠状态转变的调控

• 批准号: RGPIN-2016-04672
• 负责人: Cooke, Janice
• 金额: $ 2.99万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=630354
• 关键词: Regulation; transition; active; growth; dormancy

The ability of north-temperate forest tree species to synchronize their annual growth cycle to local environmental conditions is critical for long term persistence of the species. Timing of bud formation and transition to dormancy are adaptive traits that represent a trade-off between acquisition of winter hardiness and duration of active growth, which is a determinant of productivity. Because autumnal phenology transitions can only be studied in perennial plants, we know surprisingly little about molecular events that underpin processes such as bud formation, growth cessation, cold acclimation and dormancy acquisition.

北温带森林树种将其年度生长周期与当地环境条件同步的能力对于该物种的长期生存至关重要。芽形成的时间和向休眠的过渡是适应性特征，代表了获得冬季抗寒性和活跃生长持续时间之间的权衡，这是生产力的决定因素。由于秋季物候转变只能在多年生植物中进行研究，因此我们对芽形成、生长停止、冷驯化和休眠获得等过程的分子事件知之甚少。