B-BOX DOMAIN PROTEINS AND METHOD FOR CONTROLLING FLOWERING TIME OF PLANT USING THE SAME

The present invention relates to a usage of BBX30 and BBX31, which are mouseear cress-originated B-Box zinc finger transcription factors. More specifically, the present invention relates to a composition for controlling the flowering time of plants using the protein or a gene encoding the same, a recombinant vector, a transgenic plant, a control method of flowering time of plants, and an identification method of substances for controlling the flowering time of plants. The transgenic plants in which the expression of BBX30 or BBX31 is suppressed according to the present invention are delayed in the flowering time compared to the wild plants. Further, as the proteins are combined to CO (CONSTANS) protein, which is a photopeoriodism flowering control factor, the proteins are anticipated to control the flowering time along with CO. Accordingly, useful transgenic plants are able to be developed by using the control method of the flowering time according to the present invention. In particular, transgenic crops are able to be designed to maximize the harvesting amount, and the control method of the flowering time is able to be used for bio-fuel or as a solution to environmental problems.