关键词: 抗旱基因, 烟草, 基因, 转基因, 功能基因, 调控基因

Abstract: Drought is one of the most important stress factors influencing the growth, development, yield and quality in tobacco. Several droughtresistance related genes can be triggered to improve drought tolerance when the plants suffer from drought stress. Many droughtresistance related functional and regulatory genes had been cloned and integrated into tobacco genome by genetic engineering method. Droughtresistance ability is improved due to the expression of foreign droughtresistance related genes in transgenic tobacco. Cloning of droughtresistance gene lays the molecular foundation for breeding droughtresistance cultivars. Systematic study on expression and regulation of droughtresistance related genes under drought stress can provide a new approach for improving droughtresistance in tobacco as well as providing genetic resources for droughtresistant breeding and variety improvement in other crops.

Key words: drought-resistance genes, tobacco, gene, transgenic gene, function genes, regulatory genes