Dwarfing Genes and GA Signal Transduction Pathway in Crops

Abstract

Abstract: The application of dwarfing traits has greatly increased the yields of wheat, rice and other crops, leading to the “Green Revolution” occurred around the world in the last century. So far, several genes responsible for dwarfing traits have been cloned. The dwarfing genes showed a function to interfere with the action or biosynthesis of the gilbberellin(GA) plant hormones. Wheat Rht genes encode growth repressors and their functions could be normally suppressed by GA. Rice sd1 gene encodes a defective enzyme (GA20ox)with the key role in the GA-biosynthetic pathway. Similarly, the recessive mutation of rice sd1 can be restored to normal height by application of GA.

Liu Jie, Li Runzhi. Dwarfing Genes and GA Signal Transduction Pathway in Crops[J]. Chinese Agricultural Science Bulletin, 2005, 21(1): 37-37.

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