Xiong Huai-Yang, Li Yang-Sheng
Key Labarotory of MOE for Plant Developmental Biology, College of Life Science, Wuhan University, Wuhan 430072, China.
Yi Chuan. 2010 Sep;32(9):886-92.
Great progresses have been made in understanding of both submergence tolerance in rice (Oryza sativa L.) and the molecular mechanism of tolerance over 4 years. Tolerance of rice plants to submergence is controlled by Submergence-1 (Sub1) locus. Sub1 regulates ethylene- and GA-mediated responsiveness, leading to restriction in carbohydrate consumption and quiescence in shoot elongation during submergence and subsequently causing submergence tolerance. This article reviewed two strategies adopted by rice plants to cope with flooding stress, major physiological factors affecting submergence tolerance, and physical mapping of Sub1 locus, as well as the mechanisms of submergence tolerance, and assessed the prospects of the use of Sub1 in hybrid rice production.
在过去4年里，我们对水稻（Oryza sativa L.）的耐淹性及其耐受分子机制的认识取得了巨大进展。水稻植株的耐淹性由耐淹1号（Sub1）位点控制。Sub1调节乙烯和赤霉素介导的反应，导致碳水化合物消耗受限，淹水期间地上部伸长静止，进而产生耐淹性。本文综述了水稻应对淹水胁迫所采用的两种策略、影响耐淹性的主要生理因素、Sub1位点的物理定位以及耐淹机制，并评估了Sub1在杂交水稻生产中的应用前景。
