HON3 — Cicer arietinum

Summary

LOC101498231 (CaHON3, also known as CaHIS1-3) on chickpea chromosome 8 encodes a linker histone H1/H5 family protein with structural constituent of chromatin activity, along with DNA binding, DNA glycosylase, DNA demethylase, NAD ADP-ribosyltransferase, and apurinic/apyrimidinic deoxyendoribonuclease activities. The gene is associated with chromosome condensation, nucleosome assembly, cell cycle G2/M phase transition, regulation of mitotic entry, DNA ADP-ribosylation, base excision repair, non-homologous end joining, epigenetic regulation of gene expression, and positive regulation of stomatal complex development. It localizes to the nucleus and polar nucleus. CaHON3 has been connected to seed development and viability, endosperm morphology and development, flowering time, root hair length and growth, pollen fertility and germination, drought and salt stress tolerance, disease tolerance, pathogen resistance, and genomic imprinting. Related genes in other species link the family to viral DNA methylation, DNA double-strand break repair, sporophytic development, and abiotic stress resistance.