GENE DRO1 CONTROLLING DEEP-ROOTED CHARACTERISTICS OF PLANT AND UTILIZATION OF SAME

摘要

To provide a gene that controls the deep rooting of a plant, a transgenicplant introduced with thegene, a method for controlling the deep rooting of a plant using the gene, andsuch, high-resolution linkage analysis was performed for a genetic locus (Dro I locus)capable of controllingthe deep rooting of a plant, which was detected between a shallow-rooted ricecultivar IR64 anda deep-rooted rice cultivar Kinandang Patong in a large-scale segregatingpopulation. As aresult, it was revealed that the gene region of Drol is located in a region of6.0 kbp sandwichedbetween Drol-INDEL09, which is an InDel marker, and Drol-CAPS05, which is aCAPSmarker. Furthermore, it was confirmed that a transgenic plant transformed withthe KinandangPatong-type Drol gene shows a significantly high ratio of deep rooting. It wasalso confirmedthat a plant having the Kinandang Patong-type Drol gene is resistant todrought.