ALK — Oryza sativa Indica Group

Summary

BGIOSGA022586 (ALK, OiALK) on chromosome 6 of Indica rice encodes a starch synthase with alpha-1,4-glucan glucosyltransferase activity (EC 2.4.1.21), belonging to the GS/SS family and containing a starch synthase catalytic domain. The gene is associated with amylopectin anabolism, starch anabolism, endosperm development, and amyloplast localisation. It is associated with grain shape, grain length, grain size, grain yield, and head rice yield, as well as with pericarp colour. The gene is linked to starch biosynthesis, amylopectin chain length distribution, starch granule formation, and endosperm starch synthesis. Related genes in other species are linked to cooking quality, starch gelatinization temperature, grain weight, plant height, and heat tolerance.