Patent ID: 7265267

Claim:
A method for decreasing cyclin-dependent kinase activity in a plant, the method comprising: (a) introducing into a plant cell a nucleic acid molecule encoding a plant cyclin-dependent kinase inhibitor (CKI) which binds a plant cyclin-dependent kinase having a PSTAIRE cyclin-binding motif, wherein the nucleic acid molecule encoding the plant CKI is under the control of a promoter which functions in a plant cell, and wherein the CKI comprises an amino acid sequence as set forth in SEQ ID NO:34 or an amino acid sequence that is at least 87.5% identical thereto, and an amino acid sequence as set forth in SEQ ID NO:35 or an amino acid sequence that is at least 87.5% identical thereto, and an amino acid sequence as set forth in SEQ ID NO:36 or an amino acid sequence that is at least 90% identical thereto; and (b) regenerating a plant from the plant cell, wherein the regenerated plant has decreased cyclin dependent kinase activity relative to a corresponding wild type plant.