Plant Genetic Systems N.v.

Aventis Cropscience, N.v.

Bayer Bioscience N.v.

Celestina Mariani

Jan Jozef Leemans

Willy De Greef

Marc De Beuckeleer

Veronique Gossele

Lydia Herdies

A plant, the nuclear genome of which is transformed with a foreign DNA sequence encoding a product which selectively disrupts the metabolism, functioning and/or development of stamen cells of the plant. The foreign DNA sequence also optionally encodes a marker.

Plants with modified stamen cells

A plant, the nuclear genome of which is transformed with a foreign DNA sequence encoding a protein or polypeptide which disrupts the metabolism, functioning and/or development of stamen cells of the plant, said foreign DNA under the control of a stamen-specific promoter. The foreign DNA sequence also optionally encodes a marker.

A plant, the nuclear genome of which is transformed with a foreign DNA sequence encoding a product which neutralizes the activity of another product which disrupts the metabolism, functioning and/or development selectively of the plant's flower cells, particularly reproductive organ cells, or seed cells or embryo cells. The foreign DNA sequence also optionally encodes a marker.

Plants with modified flowers

A plant, the nuclear genome of which is transformed with a first foreign DNA sequence. The first foreign DNA sequence comprises a fertility-restorer DNA which encodes a first RNA, a protein or polypeptide that can inactivate a second RNA, protein or polypeptide in cells of the plant. The second RNA, protein or polypeptide is encoded by a sterility DNA in a second foreign DNA sequence in the plant's nuclear genome. Expression of the sterility DNA, in the absence of expression of the fertility-restorer DNA, would disturb significantly the metabolism, functioning and/or development of cells of the plant's flowers, particularly, the plant's reproductive organs, or cells of the plant's seeds or embryos in which the sterility DNA is selectively expressed, thereby rendering the plant male- or female-sterile. The first and second foreign DNA sequences also can encode suitable markers.

Plants modified with barstar for fertility restoration

Promoters from endogenous genes of plants are isolated, wherein said promoters direct gene expression selectively in stamen cells of said plant, particularly in tapetum cells of said plant. The promoters may be used to transform a plant with a foreign DNA sequence encoding a product which selectively disrupts the metabolism, functioning, and/or development of stamen cells of the plant.

Growing community of inventors

Heusden, Belgium

Celestina Mariani