The present invention relates to a gene controlling a BIN2 function and a transgenic plant body employing the gene. If the gene of the present invention is applied to an economically beneficial crop, a high value-added plant is able to be produced with excellent productivity. The gene includes a base sequence of sequence number 1. Protein includes an amino acid sequence of sequence number 2. The gene includes a base sequence of sequence number 3. The protein includes an amino acid sequence of sequence number 4. The gene codes the protein of claim 2 or 4. The transgenic plant body employs the gene of claim 1 or 3.COPYRIGHT KIPO 2017본 발명은 BIN2 기능을 조절하는 유전자 및 상기 유전자가 도입된 형질전환 식물체에 관한 것으로, 본 발명의 유전자를 경제적으로 유용한 작물에 도입하면 생산성이 뛰어난 고부가가치 식물을 생산할 수 있다는 장점이 있다.