Annual Plant Reviews online
Annual Plant Reviews online
复制标题
年度植物评论在线
DOI：
10.1002/9781119312994.apr0538
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Urbanova T
中科院分区：
文献类型：
--
作者：
Urbanova T
赤霉素（GA）促进种子萌发，但它们不是简单的“前进”（GA）分子，因为对它们在种子中作用的分子机制的了解似乎是复杂的。本章涵盖了它们在介导种子萌发的环境和发育控制中的核心作用，以及这与营养生长过程的不同。GA代谢的时空模式和关键种子隔室中的GID 1型受体信号传导决定了组织相互作用和萌发时间，以响应周围环境的提示。赤霉素是种子温度反应的关键参与者;在热抑制期间，它们与其他激素途径相互作用。化感物质（例如myrigalone A）通过特异性干扰GA代谢和信号传导来抑制种子萌发。这揭示了重要的生态生理作用的气体在种子中，并表明它们是研究物种的适应和相互作用在自然和农业生态系统对气候变化的基础。
Gibberellins (GA) promote seed germination, but they are not simple 'Go Ahead' (GA) molecules as the insight gained into the molecular mechanisms underlying their role in seeds appears to be complex. This chapter covers their central role in mediating the environmental and developmental control of seed germination, and how this differs from vegetative growth processes. Spatiotemporal patterns of GA metabolism and GID1‐type receptor signalling in the key seed compartments determine tissue interactions and germination timing in response to ambient environmental cues. Gibberellins are key players in seed temperature responses; during thermoinhibition they interact with other hormonal pathways. Allelochemicals such as myrigalone A inhibit seed germination by specific interference with GA metabolism and signalling. This reveals important ecophysiological roles for GAs in seeds and suggests that they are fundamental for studying species adaptation and interaction in natural and agricultural ecosystems upon climate change.