Over-expression of a transcription factor regulating ABA-responsive gene expression confers multiple stress tolerance
Over-expression of a transcription factor regulating ABA-responsive gene expression confers multiple stress tolerance
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DOI：
10.1111/j.1467-7652.2004.00090.x
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发表时间：
2004-09-01
影响因子：
13.8
通讯作者：
Kim, SY
中科院分区：
文献类型：
--
作者：
Kim, JB;Kang, JY;Kim, SY
干旱、冰冻和高盐度等不利的环境条件是植物生产力的主要限制因素。植物对这种“非生物胁迫”条件的感知和适应性反应，其适应过程主要由植物激素脱落酸（ABA）控制。在各种压力条件下，这种激素的水平会上升，它的功能是作为信号触发适应性反应，包括基因表达模式的变化。我们最近报道了调节aba应答基因表达的转录因子。由于ABA介导对几种常见非生物胁迫的适应，我们研究了转录因子是否参与各种胁迫反应。在这里，我们报道了ABF3的过度表达，这是一个因子之一，除了干旱之外，还赋予了对寒冷、冷冻、高温和氧化应激的耐受性。结果表明，ABF3基因参与多种胁迫反应，可能为植物抗逆性工程提供有用的遗传资源。
Unfavourable environmental conditions, such as drought, freezing and high salinity, are major limiting factors of plant productivity. Plants perceive and respond adaptively to such 'abiotic stress' conditions, and the adaptive process is controlled mainly by the phytolhormone, abscisic acid (ABA). The hormone, whose level increases under various stress conditions, functions as a signal to trigger adaptive responses that include changes in gene expression patterns. We have recently reported transcription factors that regulate the ABA-responsive gene expression. As ABA mediates adaptation to several common abiotic stresses, we investigated whether the transcription factors are involved in various stress responses. Here, we report that over-expression of ABF3, one of the factors, confers tolerance to chilling, freezing, high temperature and oxidative stress in addition to drought. our results indicate that ABF3 is involved in multiple stress responses, and that it may be useful genetic resource for the engineering of plant stress tolerance.