CYC1 — Daucus carota subsp. sativus

Summary

DCAR_013652 (CYC1) on carrot chromosome 4 encodes a cyclin A/B-like protein with cyclin-box domains and cyclin-dependent protein serine/threonine kinase regulator activity, along with histone acetylase, SUMO transferase, and kinase binding activities. It is associated with mitotic cell cycle phase transition, G1/S transition, asymmetric cell division, gamete generation, guard mother cell division, and maintenance of shoot apical meristem identity. The gene has been linked to plant cell size, leaf trichome density, biomass yield, root thickness, anthocyanin content, jasmonic acid content, cytokinin sensitivity, brassinosteroid sensitivity, and biotic plant stress trait including insect damage response trait. It localises to the nucleus, cytosol, cyclosome, CDK holoenzyme, preprophase band, and stress granules. Studies of related genes in other species link the cyclin B family to root meristem proliferation, cell cycle arrest, and mitosis-to-endocycle transition.