Abstract: The present invention provides a method for disrupting pollen development in a plant, the method comprising inhibiting the expression of an endogenous nucleic acid molecule which is, under normal conditions, detectably expressed in anther tissue of a plant during pollen formation, and which codes for a protein belonging to the MYB class of DNA binding transcription factors. Particularly, the nucleic acid molecule whose expression is blocked encodes MYB 32 or MYB 103. The invention also provides nucleic acid molecules for use in the method, use of the method in producing male sterile plants and transgenic plants produced in accordance with the method.

Abstract: The present invention provides a method for disrupting pollen development in a plant, the method comprising inhibiting the expression of an endogenous nucleic acid molecule which is, under normal conditions, detectably expressed in anther tissue of a plant during pollen formation, and which codes for a protein belonging to the MYB class of DNA binding transcription factors. Particularly, the nucleic acid molecule whose expression is blocked encodes MYB 32 or MYB 103. The invention also provides nucleic acid molecules for use in the method, use of the method in producing male sterile plants and transgenic plants produced in accordance with the method.

Abstract: The present invention provides a method for disrupting pollen development in a plant, the method comprising inhibiting the expression of an endogenous nucleic acid molecule which is, under normal conditions, detectably expressed in anther tissue of a plant during pollen formation, and which codes for a protein belonging to the MYB class of DNA binding transcription factors. Particularly, the nucleic acid molecule whose expression is blocked encodes MYB 32 or MYB 103. The invention also provides nucleic acid molecules for use in the method, use of the method in producing male sterile plants and transgenic plants produced in accordance with the method.

Abstract: The present invention provides a method for disrupting pollen development in a plant, the method comprising inhibiting the expression of an endogenous nucleic acid molecule which is, under normal conditions, detectably expressed in anther tissue of a plant during pollen formation, and which codes for a protein belonging to the MYB class of DNA binding transcription factors. Particularly, the nucleic acid molecule whose expression is blocked encodes MYB 32 or MYB 103. The invention also provides nucleic acid molecules for use in the method, use of the method in producing male sterile plants and transgenic plants produced in accordance with the method.

Abstract: The present invention provides a method of enhancing resistance of plants to one or multiple viruses, comprising introducing to a plant cell, and preferably expressing therein, a nucleotide sequence encoding a virus-encoded polypeptide. The present invention provides a method of enhancing the proportion of virus-resistant or virus-immune lines obtained from a single transformation experiment comprising introducing to a plant cell, a nucleotide sequence encoding a virus-encoded polypeptide operably in connection with a strong promoter sequence. The present invention provides novel gene sequences encoding the coat proteins of a virus and novel dysfunctional replicase sequences as well as gene constructs comprising same, in particular binary vector constructs suitable for introducing into plants and expressing the genes therein. The present invention provides and methods using same to enhance viral resistance in plants.

Abstract: An expression system for at least the aleurone cells of a developing caryopsis or for at least the scutellar epithelial tissue or vascular tissue of a germinating seedling or developing grain or plant (e.g. in the root, leaves and stem) is described. The expression system comprises a gene promoter fused to a GOI (gene of interest). In a preferred embodiment the expression system comprises the GOI fused to a modified Ltp1 promoter.

Abstract: The in vivo expression in the aleurone cells of a cereal of a conjugate is described. The conjugate comprises a GOI (gene of interest) and a particular Ltp (lipid transfer protein) promoter--namely the Ltp2 gene promoter. The conjugate is stably integrated within the cereal's genomic DNA.