GAPA — Brassica oleracea var. botrytis

Summary

BoGAPA, encoded by gene BOLND125_C02P065800.1 on cauliflower chromosome 2, is a glyceraldehyde-3-phosphate dehydrogenase (GAPDH) with NADP+ and NAD+ phosphorylating activities, localised to the chloroplast stroma, thylakoid membrane, envelope, and stromules. It is associated with the reductive pentose-phosphate cycle, responses to light, heat, cold, anoxia, and sucrose, as well as heat acclimation and negative regulation of the reductive pentose-phosphate cycle. The gene is linked to traits including photosynthetic ability, relative growth rate, starch content, seed yield, root morphology, salt tolerance, and abscisic acid sensitivity. It also shows associations with histone acetyltransferase activity, methylated DNA binding, salicylic acid binding, and sumoylation, connecting it to gene silencing, DNA methylation, and defense responses. Studies of related genes in other species further link it to photoautotrophic growth, seed lipid content, basal immunity, and thermo-resilience.