Commonwealth Scientific and Industrial Research Organisation

Anthony Alan Millar

Philip John Larkin

John Viggo Jacobsen

Franz Jacques Marie Gubler

Muhammad Fahim

Ligia Isabel Ayala-Navarrete

The present invention provides a transgenic wheat cell or wheat plant, the wheat cell or wheat plant comprising a chimeric DNA molecule which encodes a dsRNA molecule which is capable of inhibiting wheat streak mosaic virus (WSMV) replication, wherein the wheat cell or plant is immune to WSMV. The present invention also provides a chimeric DNA, the chimeric DNA comprising (i) a wheat expressible promoter; (ii) a region which encodes a dsRNA which is capable of inhibiting WSMV replication; and (iii) a transcription termination and polyadenylation signal. Finally, the present invention provides a process for producing the aforementioned transgenic wheat cell or plant, comprising (i) introducing a chimeric DNA molecule comprising (a) a wheat expressible promoter; (b) a region which encodes a dsRNA which is capable of inhibiting WSMV replication; and (c) a transcription termination and polyadenylation signal into a parental wheat cell; and optionally (ii) regenerating a wheat plant from the wheat cell comprising the chimeric DNA molecule; and (iii) identifying and/or selecting a plant which is immune to WSMV.

Wheat plants with immunity to wheat streak mosaic virus (WSMV)

The present invention relates to polypeptides, and polynucleotides encoding therefor, which influence seed dormancy in cereals such as wheat and barley. In particular, the present invention relates to polypeptides with ABA 8'-hydroxylase activity, and polynucleotides encoding these proteins. Also provided are cereal plants which produce seeds that have altered rates of germination, and/or levels of dormancy, when compared to seeds from wild-type plants, as well as methods of producing such plants.

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O'Connor, Australia

Anthony Alan Millar