植物抗旱相关基因研究进展

Advances in Genes Related to Plant Drought Tolerance

干旱是限制植物生长和产量的重要因素之一。目前,随着现代分子生物学的发展,从分子水平上初步揭示了干旱胁迫信号应答、信号传导及基因表达调控遗传机理。植物抗旱相关基因根据功能可分成两类,一类是参与干旱胁迫的信号转导或基因表达调控,主要是传递信号因子和调控基因表达的转录因子;另一类是功能蛋白基因,在植物抗旱性中直接起保护作用。本文综述了近几年植物(含麦类作物)在逆境胁迫信号网络中的抗旱相关功能基因、转录因子以及信号因子等方面的研究进展以及它们在植物抗旱基因工程中的应用状况。

The ability of plants to tolerant drought conditions is crucial for normal plant growth and productivity worldwide. Recent progress has been made in understanding of gene expression, transcriptional regulation and signal transduction in plant responses to drought on the molecular level. Drought stress-related genes are classified into two major groups on the basis of their functions. One group including singnal factors and transcription factors, is involved in signaling cascades and in transcriptional control, whereas members of the other group functioned in membrance protections. In this review, recent advance was summarized in molecular level of drought, including functional protein（genes）, transcription factors and signaling factors and their applications in drought tolerance genetic engineering in plant （including Triticeae crop） were discussed.