OK1 — Solanum tuberosum

Summary

PGSC0003DMG400016613, also known as OK1 or PWD, encodes a phosphoglucan water dikinase (GWD3) with carbohydrate kinase activity, starch binding, and histidine kinase activity. This potato gene on chromosome 9 is associated with starch breakdown and anabolism, chlorophyll a breakdown and metabolism, pre-harvest sprouting, response to water, fermentation, vacuolar localization, and chloroplast stroma localization. It has been connected to starch digestibility, starch concentration, phosphorus and phosphate content, reducing sugar, amylose, sucrose, sugar, protein, and chlorophyll content, as well as starch mobilization. Related genes in other species link the family to starch degradation and phosphorylation. The gene is also associated with high leaf starch content and impaired starch degradation.