HSS — Brassica napus

Summary

BnHSS (HSS, also known as BnARF2) on chromosome A06 of oilseed rape encodes a protein with DNA-binding and transcription corepressor activity, containing ARF, AUX/IAA, and B3 DNA-binding domains. The gene is associated with numerous developmental and agronomic traits, including seed weight, seed coat color, root length and thickness, stem strength and diameter, flower and petal morphology, flowering time, and photoperiod sensitivity. It is linked to processes such as fruit ripening and dehiscence, floral organ abscission, root hair cell differentiation, maintenance of floral meristem identity, and regulation of cell proliferation. The encoded protein localizes to the nucleus, cytoplasm, plasma membrane, vesicles, and cell cortex. Studies of related genes in other species connect the family to senescence, organ size, seed mass, drought tolerance, and resistance to Sclerotinia sclerotiorum.