Application of TRM family protein gene OsSSD2 in regulation and control of plant height of gramineous crops

The invention discloses an application of a TRM family protein gene OsSSD2 in regulating and controlling the plant height of gramineous crops. The invention reveals that the OsSSD2 gene can regulate and control the plant height of gramineous crops. According to the invention, an overexpression vector of OsSSD2 is constructed, a receptor rice variety Nipponbare is transformed, an OX-OsSSD2 strain with OsSSD2 overexpression is obtained, and compared with the receptor rice variety Nipponbare, the plant height of the OX-OsSSD2 strain is obviously reduced, and the grain shape of rice is not influenced; a targeted gene editing vector of the OsSSD2 is constructed, a japonica rice variety Nipponbare is converted, a strain OsSSD2-KO with 2bp deleted in an OsSSD2 coding region is obtained, and compared with receptor rice Nipponbare, the plant height of the OsSSD2-KO strain is obviously increased, and the grain shape of rice is not affected. The invention provides a candidate gene resource and potential application for