| abstract |
The invention discloses the application of ZmSBP14, ZmSBP10 or ZmSBP26 gene in regulating maize stomatal development. The present invention finds that single mutation or simultaneous mutation of ZmSBP14 gene, ZmSBP10 gene or ZmSBP26 gene in maize can inhibit the development of epidermal cells of maize leaves into epidermal hairs, promote the transformation of epidermal hairs into stomata, and finally lead to an increase in the number of stomata in maize leaves. Thus, the present invention provides a method for increasing the number of maize stomata or cultivating new maize varieties with high photosynthetic efficiency, comprising: mutating ZmSBP14 gene, ZmSBP10 gene or ZmSBP26 gene in maize individually or simultaneously, and the obtained transgenic The number of stomata in maize plants increased, and the photosynthetic efficiency was also significantly improved. The invention has application prospects in the aspects of cultivating new corn varieties with high photosynthetic efficiency, improving corn yield and water use efficiency, and the like. |