MODIFICATION OF PLANT AND MODIFIED PLANT

摘要

PROBLEM TO BE SOLVED: To increase activities of a 3-hydroxy-3-methylglutaryl coenzyme A (hereinafter referred to as HMG-CoA) reductases in a plant by modifying a gene of the HMG-CoA reductase so that a protein kinase having the phosphorylating ability may not substantially manifest the activities and transducing the resultant modified gene into a plant cell. SOLUTION: An expression cassette having (A) a promoter capable of functioning in a plant cell, (B) a gene of a protein kinase modified so that the protein kinase capable of manifesting the in vitro phosphorylating activities of serine at the 7th position from the N-terminal of a peptide having an amino acid sequence of the formula may not substantially manifest the activities and (C) a terminator capable of functioning in the plant cell in a form enabling the functions, is transduced into a cell of the plant having HMG-CoA reductase activities in catalyzing the production of mevalonic acid.