Dormancy in Plant Seeds
Dormancy in Plant Seeds
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DOI：
10.1007/978-3-642-12422-8_4
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发表时间：
2010-01-01
期刊：
影响因子：
--
通讯作者：
Leubner-Metzger, Gerhard
中科院分区：
文献类型：
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作者：
Hilhorst, Henk W. M.;Finch-Savage, William E.;Leubner-Metzger, Gerhard
在过去的几十年里，人们对种子休眠进行了深入的研究，目前，对这种植物性状的了解处于植物生物学的前沿。主要模式物种是拟南芥，一种一年生杂草，具有非深度生理休眠性。本概述介绍了种子休眠研究的最新技术，主要关注该物种的生理和分子遗传方面。很明显，就像许多其他生物体一样，种子的休眠和应激反应密切相关。植物激素脱落酸和赤霉素分别在获得发育停滞或抑制代谢不活动方面发挥着关键作用。人们对重叠的休眠和胁迫反应给予了一些关注，这在许多其他生物体中经常被研究，但在种子中的研究很少。
Seed dormancy has been studied intensely over the past decades and, at present, knowledge of this plant trait is at the forefront of plant biology. The main model species is Arabidopsis thaliana, an annual weed, possessing nondeep physiological dormancy. This overview presents the state-of-the-art of seed dormancy research, focusing mainly on physiological and molecular-genetic aspects in this species. It has become clear that, like in many other organisms, the dormancy and stress responses are tightly associated in seeds. The plant hormones abscisic acid and gibberellins play a pivotal role in the acquisition of developmental arrest or repression of metabolic inactivity, respectively. Some attention is given to the overlapping dormancy and stress responses, commonly studied in many other organisms but only marginally in seeds.