BAM1 — Solanum tuberosum

Summary

PGSC0003DMG400001855, the potato gene StBAM1 on chromosome 8, encodes a beta-amylase enzyme (EC 3.2.1.2) with DNA-binding transcription factor activity and protein-binding capacity. It is associated with carbohydrate metabolism, including maltose anabolism, starch anabolism, sucrose breakdown, and polysaccharide breakdown, as well as responses to cold, herbivory, thirst, and ABA signaling. The protein localises to chloroplast stroma, cytosol, nucleus, endoplasmic reticulum, and extracellular vesicles. StBAM1 is linked to starch degradation and content, reducing sugar and sucrose content, photosynthetic and respiration rates, and traits such as plant growth, leaf starch degradation, heat stress tolerance, male fertility, disease resistance, and root and shoot meristem development. Studies of related genes in other species connect the family to starch metabolism, shoot apical meristem maintenance, and cold tolerance.