National BioResource Project (NBRP)::KOMUGI -Integrated Wheat Science Database- : Genome / Development

Gene symbol	Class				Synonyms	Chromosomes	Germplasms
Gene symbol	Level1	Level2	Level3	Level4	Synonyms	Chromosomes	Germplasms
SbeII	Proteins	Enzymes	Starch branching enzyme II
SbeII	Comment: Suppression of SBEIIb expression alone had no effect on amylose contents, however, suppression of both SBEIIa and SBEIIb expression resulted in wheat starch containing >70% amylose {10534}. Combined loss-of-function mutations in SbeIIa-A, SbeIIa-B, SbeIIb-A, and SbeIIb-B (PI 670160) increased amylose content by 66% and resistant starch by 753% relative to the control in tetraploid wheat cv. Kronos {11125}. Combination of these four mutations with mutations of SbeIIa-D in hexaploid wheat (PI 670160) increased amylose content by 63% and resistant starch by 1,057% in field experiments relative to the control {11126}