HB-7 — Capsicum annuum

Summary

CaHB-7 (T459_09683) on pepper chromosome 3 encodes a homeodomain-leucine zipper (HD-Zip) class I transcription factor with DNA-binding, protein homodimerization, and TBP-class protein binding activities. It is associated with responses to hormones, lipids, osmotic and salinity stress, virus infection, and post-transcriptional gene silencing. The gene is linked to regulation of abscisic acid-mediated signalling, carotenoid and anthocyanin biosynthesis, pollen tube growth and guidance, endosperm development, and regeneration. Associations with fruit colour, seed yield, endosperm morphology, and auxin sensitivity have been noted. Related genes in other species connect the family to drought and water deficit tolerance, cold stress tolerance, ABA sensitivity, leaf senescence, stomatal conductance, photosynthesis, oxidative stress tolerance, inflorescence stem elongation, root and leaf growth, and seed germination.