日本研究人员日前通过基因改良开发出一种耐旱水稻,这种水稻的根部能够深深扎入土壤中吸收水分,因此在干旱条件下也能生长。日本农业生物资源研究所宇贺优作率领的研究小组介绍说,水稻的根是横向伸展的,所以在土壤中扎根很浅,而旱稻的根则扎得很深。他们经过研究发现,旱稻拥有一种DRO1基因。这种基因感知重力后,可以使旱稻根部向下伸展。研究小组在新一期《自然-遗传学》杂志上发表论文说,他们对一种名为IR64的水稻(属于籼稻)进行了基因研究,发现其DRO1基因有部分 Recently, Japanese researchers developed a drought-tolerant rice through genetic modification. The root of this rice can deeply penetrate the soil to absorb water and grow under drought conditions. The research team led by Yuko Yuko of the Japan Institute of Agricultural Biological Resources said that the roots of rice are stretched horizontally so that the roots in the soil are very shallow while that of the uprooted rice is very deep. After their research, they found that upland rice has a DRO1 gene. After the gene senses gravity, it can stretch down the roots of upland rice. In a new issue of the journal Nature - Genetics, the team said in a paper that they conducted a genetic study on a rice known as IR64, which is an indica rice, and found that part of its DRO1 gene