植物在渗透胁迫下的基因表达及信号传递

渗透胁迫是指由于环境因素的变化使植物不能得到充足水分的一种状况。常见的渗透胁迫因素有干旱、盐害及冻害等。渗透胁迫会严重影响植物的生长发育及产量。植物在长期的进化过程中形成了一些保护机制能减轻渗透胁迫造成的伤害。比如有些植物在形态上演化生成盐腺,能排出体内的过量盐分以逃避盐害。但在渗透胁迫下几乎所有的植物都能合成一些无毒性的小分子有机物作为渗透调节剂来维持细胞内渗透势的相对稳定。在分子水平上...

Gene Expression and Signal Transduction in Plants Under Osmotic Stress

Osmotic stress is generally referred to situations where insufficient water availability limits plant growth and development.the responses to osmotic stress are complex in plant.In this review,some osmotic stress\|responsive genes in plants have been reported and their possible roles have been discussed.Studies on the regulation of osmotic stress\|responsive genes have been made progress in recent years and some results have also been reported here.These studies aim to understand how plant cells perceive the osmotic stress signal and transduce this signal to produce changes in osmotic stress\|responsive gene expression.