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Moo-Geun Jee,Hye-Jung Lee,Mingmao Sun,Sailila E. Abdula,Sanguk Byeon,Dal-A Yu,Yu-Jin Jung,Kwon-Kyoo Kang,Illsup Nou,Yong-Gu Cho 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
Amylopectin composition is determined by the relative activity of soluble starch synthase (SSS) and granule-bound starch synthase (GBSS). Soluble starch synthase and starch branching enzymes are major determinants for the synthesis of amylopectin while GBSS1 is responsible for amylose synthesis in vivo. The formers are made of linear and branched molecules and the latter is composed of highly branched molecules. To increase the palatability of rice, down-regulation of amylose synthesis by antisense and RNA interference (RNAi) could be excellent and powerful tools for controlling the starch composition which is responsible for grain eating quality. The goal of this study is to generate breeding lines with lower amylose content relative to its wild type. This study also reports the results of the two down-regulating technology in lowering the amylose content of rice grain. Furthermore, this study elucidates the effect of using antisense and RNAi for SSS1 and GBSS1.