CO/FT 调节模块控制了树木的开花时间和季节性增长停止
Henrik Böhlenius1, Tao Huang, Laurence Charbonnel-Campaa
1Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S-90183 Umeå, Sweden.
概括
这种CO/FT基因模块控制着树的开花. 同一个模块还调节季节性生长和休眠期,解释树如何适应不同度的不同日长.
科学领域:
- 植物生物学 植物生物学
- 森林生态森林生态学
- 分子遗传学 分子遗传学
背景情况:
- 森林树木表现出多年生长,花期延迟,每年的生长和休眠周期.
- 众所周知,CO/FT调节模块可以根据日长控制一年生植物的开花时间.
- 了解这些机制对于预测森林对环境变化的反应至关重要.
研究的目的:
- 调查CO/FT监管模块在控制树开花时间方面的作用.
- 要确定这个模块是否也会影响季节性增长的停止和芽的设置.
- 为了解释关键日长的适应变化,在阿斯的度梯度上停止生长.
主要方法:
- 在aspen. 的CO/FT监管模块的分析.
- 观察青树的开花和季节性生长模式.
- 横跨北欧一个度梯度的树生态型的比较.
主要成果:
- CO/FT 监管模块控制了树的开花时间,类似于一年生植物.
- 意想不到的是,CO/FT模块还可以调节短日诱导的增长停止和秋季芽.
- 这种机制解释了观察到的生态遗传变化在关键的日长,以停止生长在阿斯.
结论:
- CO/FT模块是阿斯的生殖时间 (开花) 和植被时间 (停止生长) 的关键调节器.
- 这种双重功能使得阿斯能够将其现象学适应于不同度的当地的日长线索.
- 这些发现为了解森林适应环境季节性的情况提供了分子基础.
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