INO — Brassica oleracea var. botrytis

Summary

BoINO, the INO gene on cauliflower chromosome 5, encodes a YABBY family protein with DNA-binding, zinc-binding and transcription cis-regulatory region binding activity, localised to the nucleus. The gene is associated with carpel formation, nectary development, regionalization, style development, specification of carpel identity, sporocyte differentiation, regulation of shoot apical meristem development, cell fate commitment, abaxial cell fate specification, regulation of developmental process, meristem determinacy, polarity specification of adaxial/abaxial axis, carpel development, regulation of leaf development, specification of floral organ number, fruit development, floral meristem determinacy, and plant ovule development. It is linked to traits including leaf position, leaf morphology, anther morphology, flowering time, plant morphology, microsporocyte development, pollen fertility restoration, and leaf composition. Phenotypes associated with BoINO include female sterile with absent outer ovule integument, complete male and female sterility with defective sporocyte formation, and leaf complexity. Related genes in other species link the family to ovule integument development, abaxial cell fate, sporogenesis, and heat stress memory.