CKX1 — Oryza sativa Indica Group

Summary

BGIOSGA026866 (CKX1) on chromosome 8 of Indica rice encodes a cytokinin dehydrogenase (EC 1.5.99.12) with FAD-binding and oxidoreductase domains, and is associated with cytokinin breakdown and metabolism, phosphoglycerate transport, meristem development, and stomatal complex morphogenesis. The gene is linked to grain yield, grain number, thousand grain weight, panicle and spikelet traits, plant height, seed shattering, panicle number, grain shape and size, amylose content, photosynthetic rate, leaf morphology, chloroplast development, flowering time, disease tolerance, and heterosis. Associations also include root system architecture, root and shoot development, meristem size, drought and heat tolerance, salt tolerance, osmotic stress tolerance, leaf senescence, abscisic acid responses, auxin and cytokinin signaling, and stress responses. The protein localizes to plastid inner membrane, chloroplast envelope, ER lumen, vacuole, cytosol, and nucleus. Related genes in other species are linked to root growth, flowering, and cytokinin degradation.