结合大家感兴趣的科研问题,接着给大家介绍植物激素。本期明星是赤霉素(Gibberellins),是最早研究的五种植物激素之一。
Phytohormones – old timers and newcomers (5+4)

赤霉素(Gibberellins)在第一次“绿色革命”中扮演了核心角色,通过调控植物的生长和发育,显著提高了农作物的产量。在“绿色革命”中,赤霉素的应用主要体现在半矮秆育种上,这种育种方法通过调控赤霉素的代谢和信号转导,使得植物能够在保持高产的同时,减少倒伏的问题,从而大幅度提高了农作物的产量。此外,赤霉素应用还涉及到促进发芽、生长和雄花发生等方面,这些都是提高农作物产量和质量的关键因素。因此,可以说赤霉素的应用是“绿色革命”成功的关键因素之一。
赤霉素(Gibberellins)

Gibberellins were identified as fungal compounds that promote stem elongation

The manipulation of GA levels is tremendously important for agriculture

GA has been described as “an inhibitor of an inhibitor”

The GA biosynthetic pathway is complex

GA-INSENSITIVE1 and SLENDER1 both encode “DELLA” repressors

Overview of GA homeostasis and signaling

GAs and DELLAs are central in many signaling schemes

Summary of GA action

GA – ongoing research

参考文献:
Introduction to Phytohormones,The Plant Cell, Volume 22,Issue 3,March 2010,Page 1, https://doi.org/10.1105/tpc.110.tt0310.