PGD1 — Capsicum annuum

Summary

CaPGD1 (T459_30580) on pepper chromosome 12 encodes a phosphogluconate dehydrogenase (NADP+-dependent, decarboxylating), classified as EC 1.1.1.44, and also annotated with protein kinase activity, ATP binding, and calcium/calmodulin-dependent kinase activity. The gene is associated with the pentose-phosphate shunt, cellular respiration, D-gluconate metabolism, and responses to sugars such as glucose, fructose, and sucrose. It is linked to fruit ripening, regulation of pollen tube growth, cell death, cold response, and abscisic acid-mediated signaling. Associations include disease tolerance, salt tolerance, drought tolerance, manganese sensitivity, pungency, stomatal opening and closure, root thickness, and plant growth and development. The encoded protein is localized to multiple compartments including the cytosol, chloroplast stroma, mitochondria, plastid, apoplast, and plasmodesmata. Studies of related genes in other species link the family to root growth and chlorophyll content.