GAPA — Cucumis sativus

Summary

CSA_3G252490, also known as GAPA, encodes a glyceraldehyde-3-phosphate dehydrogenase (GAPDH) enzyme with both NADP+ and NAD+ phosphorylating activity, placing it at the core of plastid glycolysis and the Calvin cycle. In cucumber (Cucumis sativus) on chromosome 3, this gene is associated with a wide range of processes including photosynthesis, carbohydrate metabolism, the ascorbate-glutathione cycle, oxidative phosphorylation, and the glyoxylate cycle. It is linked to key agronomic traits such as net photosynthetic rate, chlorophyll content, rubisco content, plant height, stem diameter, root length, sugar content, proline content, and drought tolerance. The gene product also shows associations with stress responses, including oxidative stress and S-nitrosylation, and is localized to the chloroplast. Studies of related genes in other species further connect this family to photosynthetic carbon metabolism.