H32 — Cucumis sativus

Summary

CsH32 (CSA_4G290220) in cucumber encodes a histone H3 family protein with histone-fold and CENP-A domains, annotated with histone H3S10 kinase, H3K9 and H3K27 methylase, acetylase, and methyl-CpG/NpN/NpG binding activities, as well as euchromatin and nucleosomal DNA binding. The gene is associated with chromatin decompaction, transposable element silencing via heterochromatin formation, regulation of DNA replication and posttranscriptional gene silencing, leaf pavement cell and stomatal lineage development, immune response regulation, and reproductive processes. It localises to generative cell nuclei, euchromatin, heterochromatin, and chromatin silencing complexes. Associations include leaf trichome density, nitrogen sensitivity, oleic acid content, bacterial disease and aphid responses, aluminum response, seed viability, callus induction, cytokinin and brassinosteroid sensitivity, flower and floral organ development, and vegetative-to-reproductive phase transition. Studies of related genes in other species link the family to male and female germline development, fertility, disease resistance, salt stress response, and organ regeneration.