Plant Genetic Systems N.v.

Bayer Bioscience N.v.

Aventis Cropscience, N.v.

Plant Genetic System, N.v.

Marc Cornelissen

Piet Soetaert

Jan Dockx

Maike Stam

Johan Botterman

Frank Michiels

Frank Meulewaeter

John Jacobs

Michael Metzlaff

Roel Van Aarssen

Gerben Van Eldik

The invention provides methods and means for the identification of genes involved in the determination of a plant trait or for the identification encoded by a nucleic acid comprising a determined nucleotide sequence. The invention also provides kits comprising viral RNA vectors derived from satellite viruses and corresponding helper viruses for the introduction of inhibitory RNA into plant cells and plants.

Methods and means for delivering inhibitory RNA to plants and applications thereof

A plant having in the nuclear genome of its cells foreign DNA comprising i) a male-sterility gene comprising a male-sterility DNA encoding a sterility RNA, protein or polypeptide which, when produced or overproduced in a stamen cell of the plant, significantly disturbs the metabolism, functioning and/or development of the stamen cell, and, a sterility promoter directing expression of the male-sterility DNA selectively in specific stamen cells of said plant, the male-sterility DNA being in the same transcriptional unit as, and under the control of, the sterility promoter, and ii) a coregulating gene comprising a coregulating DNA encoding a coregulating RNA, protein or polypeptide which, when produced in plant cells wherein said sterility RNA, protein or polypeptide is produced, prevents the activity of said sterility RNA, protein or polypeptide, and a coregulating promoter which is selected from the group consisting of a promoter directing expression of said coregulating DNA in non-stamen cells of said plant, while directing low-level expression in said specific stamen cells; and a promoter comprising a minimal promoter element, whereby said coregulating DNA is in a transcriptional unit which is different from the transcriptional unit of said sterility DNA and wherein said plant is male sterile.

Method to obtain male sterile plants

Modified Bacillus thuringiensis genes with improved expression in plant

A DNA fragment, encoding all or an insecticidally-effective part of a Bt crystal protein, is modified by changing A and T sequences to corresponding G and C sequences encoding the same amino acids, in a region having transcriptional activity less than 25% of the transcriptional activity of a region at the translation initiation site.

Modified Bacillus thuringiensis insecticidal-crystal protein genes and

A DNA fragment, encoding all or an insecticidally-effective part of a Bt crystal protein, is modified by changing A and T sequences to corresponding G and C sequences encoding the same amino acids.

Growing community of inventors

Heusden, Belgium

Marc Cornelissen