MYB60 gene for the inhibition of anthocyanin biosynthesis, the transgenic lettuces that the MYB60 gene is transduced and the preparing method thereof

摘要

A MYB60 gene is provided to inhibit biosynthesis of anthocyanin, so that it is useful for change of flower color of flower plants and for development of new varieties of flower plants. A transgenic lettuce containing the same MYB60 gene is also provided to verify anthocyanin biosynthesis-inhibiting effects of the gene through phenotype by using a plant system. A MYB60 gene inhibiting biosynthesis of anthocyanin has the nucleotide sequence of SEQ ID NO:1. A vector 22103-MYB60 contains the MYB60 gene. A transformed Agrobacterium tumefaciens EHA105(KACC 95045P) is produced with the vector 22103-MYB60. A method for preparing a transgenic lettuce comprises the steps of: (a) preparing an expression vector containing the MYB60 gene and a basta resistant bar gene as a selection marker; (b) producing Agrobacterium tumefaciens EHA105(KACC 95045P) by transforming with the expression vector; (c) co-culturing cotyledon of a lettuce plant with the transformed Agrobacterium tumefaciens EHA105(KACC 95045P); (d) selecting shoots of lettuce plant from a selection medium and inducing plants from the shoots in plant-inducing medium; and (e) transplanting the induced lettuce plants to an in vitro medium and the soil to acclimate them.