Application of OsABCB4 gene in regulation and control of grain length of rice seeds

The invention discloses application of an OsABCB4 gene in regulation and control of the grain length of rice seeds, and belongs to the technical field of biology. According to the application, the expression or activity of the OsABCB4 gene coding protein in rice is reduced by utilizing a biological technical means, so that the rice mutant with long-grain seeds is obtained. The OsABCB4 gene in the rice is specifically knocked out through a gene editing technology, a homozygous and stable mutant of the OsABCB4 is obtained, the mutant shows the phenotype that the grain length of the seeds is increased, and it is indicated that the OsABCB4 gene plays a role in regulating and controlling the grain length of the rice seeds. The invention provides a new direction of the OsABCB4 gene in rice grain shape research, and the OsABCB4 gene has potential application value in the aspect of improving the rice yield. 本发明公开了OsABCB4基因在调控水稻种子粒长中的应用，属于生物技术领域。所述应用包括：利用生物学技术手段降低水稻中OsABCB4基因编码蛋白的表达或活性，进而获得长粒型种子的水稻突变体。本发明通过基因编辑技术特异性敲除