油菜素甾醇
下胚轴
生长素
赤霉素
光敏色素
避光
生物
延伸率
拟南芥
植物
植物激素
细胞生物学
生物化学
红灯
基因
突变体
材料科学
冶金
极限抗拉强度
作者
Sha Huang,Chuanwei Yang,Lin Li
出处
期刊:Phenomics
[Springer Nature]
日期:2022-02-13
卷期号:2 (2): 119-129
被引量:3
标识
DOI:10.1007/s43657-022-00044-3
摘要
For shade-intolerant plants, a reduction in the red/far-red (R:FR) light ratio signals the close proximity of competitors and triggers shade-avoidance syndrome (SAS). Auxin, brassinosteroid, gibberellin and some transcriptional regulators have been reported to regulate shade-induced hypocotyl elongation. However, little is understood regarding the coordination of these multiple regulatory pathways. Here, combining time-lapse growth rates and transcriptomic data, we demonstrate that auxin and brassinosteroid affect two phases of shade-induced rapid growth, whereas gibberellin mainly contributes to the second rapid growth phase. PHYTOCHROME-INTERACTING FACTOR 7 (PIF7) acts earlier than other PIFs. PIF4 and PIF5 modulate the second rapid growth phase. LONG HYPOCOTYL IN FAR-RED 1 (HFR1) and PIF3-LIKE 1 (PIL1) modulate two rapid growth phases. Our results reveal that hormonal and transcriptional regulatory programs act together to coordinate dynamic hypocotyl changes in an immediate response to a shade signal and provide a novel understanding of growth kinetics in a changing environment.The online version contains supplementary material available at 10.1007/s43657-022-00044-3.
科研通智能强力驱动
Strongly Powered by AbleSci AI