BUM — Arabidopsis thaliana

Summary

AT1G62360, also known as STM, BUM, WAM1, or SHOOT MERISTEMLESS, encodes a homeobox transcription factor containing KNOX1, KNOX2, and ELK domains, and is annotated with DNA-binding transcription factor activity, RNA polymerase II-specific, as well as microtubule binding and protein folding chaperone functions. In Arabidopsis, this gene is associated with shoot apical meristem development and maintenance, stem cell proliferation and differentiation, carpel and leaflet formation, and shoot organ boundary specification. It is linked to numerous agronomic traits including stem number and thickness, leaf area index, compound leaf morphology, inflorescence size, fruit weight and shape, and phyllotaxy. The gene product localizes to the nucleus, cytoplasm, plasmodesma, and microtubule cytoskeleton, and is associated with gibberellin and auxin content, as well as flowering time and virus resistance.