ICE1 — Camelina sativa

Summary

CsICE1 (CSA06G006530) on Camelina sativa chromosome 6 encodes a bHLH transcription factor with DNA-binding and transcription activator activity, as well as calcium-dependent protein kinase, SUMO transferase, and ubiquitin-protein transferase activities. It is associated with stomatal complex patterning and lineage progression, anther morphogenesis, tapetum cell differentiation, seed morphogenesis, shoot regeneration, and regulation of responses to osmotic stress, phosphate starvation, nitrate assimilation, and salicylic acid metabolism. The gene is linked to numerous agronomic traits including biomass yield, seed yield, water use efficiency, leaf thickness, stomatal resistance, chloroplast development, temperature stress response, phosphorus response, proline content, lignin biosynthesis, aphid response, and aluminum response. Studies of related genes in other species link the family to freezing tolerance, stomatal patterning, osmotic stress growth, and ABA responsiveness in stomata.