Abstract: Processes for inhibiting flower formation and processes for inducing flower formation in plants, and processes for improving the storage capability of storage organs of useful plants and processes for reducing the sprouting of tubers in tuberous plants are described.

Abstract: There is described an expression cassette and plasmids containing an expression cassette, which contains the transcriptional regulatory starter region for a guard cell specific gene expression. In the expression cassette is contained the guard cell promoter having the sequence Seq. ID No: 1. The starter region in the expression cassette ensures a guard cell specific gene expression and causes no expression in mesophyllic cells or epidermal cells of the leaves of plants. There is also described the preparation of the expression cassette and plasmids containing this expression cassette. Also described is the use of the expression cassette and plasmids containing this expression cassette for preparing transgenic plant cells and plants.

Abstract: A method of and plasmids for producing specific gene expression in the guard cells of plants. In particular, 5′ transcriptional regulatory promoter regions are provided for guard cell specific expression. In addition, methods for preparing an expression cassette, plasmids, and the use of the cassettes and plasmids to produce transgenic plant cells and plants are described.

Abstract: Plasmids are described having DNA sequences that after insertion into the genome of the plants cause changes in the carbohydrate concentration and the carbohydrate composition in regenerated plants. These changes can be obtained from a sequence of a branching enzyme that is located on these plasmids. This branching enzyme alters the amylose/amylopectin ratio in starch of the plants, especially in commercially used plants.

Abstract: DNA sequences and plasmids are described, that by integration in a plant genome of sugar beet change the sucrose concentration. In addition, transgenic plants that, by introduction of the DNA sequences of the invention, have altered sugar concentrations, are described.

Abstract: A method of and plasmids for producing specific gene expression in the guard cells of plants. In particular, 5' transcriptional regulatory promoter regions are provided for guard cell specific expression. In addition, methods for preparing an expression cassette, plasmids, and the use of the cassettes and plasmids to produce transgenic plant cells and plants are described.