标题 |
![]() FKF1传递光周期开花中康斯坦斯稳定的时间信息
相关领域
拟南芥
基因
生物
基因座(遗传学)
光周期性
遗传学
抄写(语言学)
转录因子
细胞生物学
植物
突变体
语言学
哲学
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其它 | In spring, plants respond to increasing day length and shifts in the spectrum of solar irradiance by releasing the flowering induction pathway, which includes expression of the FLOWERING LOCUS T (FT) protein. Song et al. (p. 1045) have now identified a trio of controls brought to bear on FT gene expression by the FKF1 (FLAVIN-BINDING, KELCH REPEAT, F-BOX 1) protein. FKF1 removes a repressor and also stabilizes the activating CONSTANS (CO) protein in the afternoons through a binding interaction enhanced by blue light—an increasing component of solar irradiation during spring. Then FKF1 itself helps to activate transcription of the CO gene. Thus, by removing the repressor and shoring up the activator, FKF1 sets flowering on its way. |
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