| 摘要 |
The present invention provides a modified Arabidopsis thaliana CAC1, CAC2 or CAC3 promoter, the Arabidopsis thaliana CAC1, CAC2 or CAC3 suppressor element, a recombinant vector comprising such a modified promoter or such a suppressor element, a host cell comprising such a recombinant vector, methods of using the modified promoter or the suppressor element to regulate or suppress, respectively, expression of a coding sequence in a cell, a plant cell in which the expression of a coding sequence in the plant cell has been so regulated or suppressed, as well as a plant tissue, a plant organ and a plant comprising such a plant cell. Also provided by the present invention is an isolated or purified nucleic acid molecule comprising the genomic DNA sequence of the carboxyltransferase alpha subunit (CAC3) of the acetyl CoA carboxylase (ACC), a vector comprising such a sequence, a cell transformed with such a vector, a plant cell, a plant tissue, a plant organ or a plant in which the level of a subunit of ACC, ACC enzymatic activity or malonyl CoA has been altered, and a method of producing such a plant cell, plant tissue, plant organ or plant. |
