SF1 — Cucumis sativus

Summary

CsSF1 (CSA_4G022880) in cucumber encodes a KH domain-containing protein with RNA-binding and pre-mRNA branch point binding activity, placing it in the SF1 family of splicing factors. The gene is associated with the regulation of mRNA splicing via the spliceosome, as well as with gibberellin and ethylene biosynthesis, lipolysis, and both short-day and long-day photoperiod flowering downregulation. It has been linked to flower development, organ growth, chloroplast rRNA processing, innate immunity, and cell division. The protein localizes to the nucleus, nucleolus, spliceosome complex, and chloroplast thylakoid membrane. CsSF1 is associated with fruit length and size traits, and with fruit elongation and chloroplast development phenotypes. Related genes in other species are linked to flowering time, heat and cold stress responses, and alternative splicing.