BE3 — Triticum aestivum
Summary
TaBE3 (TRAESCS2D02G290800) on bread wheat chromosome 2D encodes a 1,4-alpha-glucan branching enzyme with isoamylase activity, classified under EC 2.4.1.18, and belongs to the glycoside hydrolase superfamily. The gene is associated with starch and amylopectin anabolism, starch breakdown, and carbohydrate metabolism, as well as endosperm and seed development. It is linked to grain size, grain width, grain protein content, starch content, amylose content, resistant starch content, and polysaccharide content. The product localizes to the amyloplast, chloroplast stroma, and chloroplast isoamylase complex. Studies of related genes in other species connect the family to starch biosynthesis, endosperm development, and traits including grain weight, grain yield, drought tolerance, and seedling vigor.
Annotations
- Chromosome
- 2D
- Related genes
- BE3, TF1, SBE2.2, MADS4, AIN1, DIVARICATA, WRKY24, EBP
- GO terms
- NO storage, Digestion, carbohydrate metabolism, Embryo Development Ending In Seed Dormancy, glycogen anabolism, Amyloplast, starch anabolism, 1,4-alpha-glucan Branching Enzyme Activity
- Publications
- 26715025, 18989364, 14759260, 18218973, 15656970, 23393426, 25663508, 16615871
- Traits
- Polymerization Profile Similar to be2/be3 Mutants, Reduced Maltose Accumulation, Normal Sugar Levels Compared to Wild Type, Severely Reduced Plant Size and Biomass, Altered Malto-oligosaccharide Composition, Cytosolic Maltose Accumulation, Viable Seed Production Despite Mutation, Increased Starch Phosphorylase Activity