Introduction of Wx transgene into rice wx mutants leads to both high- and low-amylose rice.

Abstract excerpt

The Waxy (Wx) gene encodes a granule-bound starch synthase (GBSS) that plays a key role in the amylose synthesis of rice and other plant species. Two functional Wx alleles of rice exist: Wx(a), which produces a large amount of amylose, and Wx(b), which produces a smaller amount of amylose because of the mutation at the 5' splice site of intron 1. Wx(b) is largely distributed in Japonica cultivars, and high...

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