HB-3 — Cucumis sativus

Summary

CsHB-3 (CSA_6G518270) on cucumber chromosome 6 encodes a homeobox domain-containing protein of the WOX8/9-like family with transcription coactivator activity, DNA binding, and transcription factor activity. It is associated with meristem development, organogenesis, cotyledon boundary formation, cell polarization, and regulation of developmental processes. The gene has been linked to shoot system elongation, seed set, whole plant size, male sterility, gibberellic acid and cytokinin sensitivity, petiole length, shoot branching, pollen fertility, vegetative growth, trichome morphology, stem elongation, floral organ development, cell elongation, photosynthetic rate, root meristem development, anthocyanin content, hypocotyl morphology, leaf senescence, root thickness, seed growth, and flowering time. It localizes to the nucleus and cytoplasm and is associated with nitrogen utilization, seed dormancy, gibberellic acid homeostasis, and salicylic acid signaling. Related genes in other species link the family to inflorescence architecture, embryonic patterning, and meristem maintenance.