| abstract |
The present invention relates to a kind of application of the OsSBR1 genes and its RNA interference fragments of control resisting rice sheath blight, this OsSBR1 genes, in suppressing under expression condition in paddy rice, with the disease resistance to Rhizoctonia solani Kuhn.The present invention utilizes RNAi transgenic technologys, and the anti-banded sclerotial blight paddy genes of OsSBR1 of acquisition can apply to the initiative of anti-banded sclerotial blight transgenic paddy rice and the cultivation of anti-banded sclerotial blight rice varieties；With unconverted acceptor rice varieties, " compared with safe round-grained rice 394 ", the sharp eyespot resistance of OsSBR1 RNAi transfer-gen plants is significantly improved；The present invention also demonstrates suppression expression OsSBR1 genes, paddy disease-resistant related gene OsPR1, OsPR1b, PBZ1, E2F related gene, PDR and PR3 are in overexpression, the sharp eyespot resistance of transfer-gen plant is significantly improved, and this is a new discovery on resisting rice sheath blight molecular mechanism research. |