HB2 — Glycine max

Summary

GmHB2 (GLYMA_10G199100V4) encodes a leghaemoglobin-like protein with oxygen carrier activity, oxygen binding, and heme binding functions, localizing to the cytosol, cytoplasm, and nucleus. In soybean, it is associated with oxygen transport, nitrogen homeostasis, vascular transport, and responses to nitrogen compounds, cobalt ions, and sulfane. The gene has been linked to drought tolerance, water use efficiency, chlorophyll content, germination rate, respiration rate, stearic acid content, and nitrogen content. Associations also include seed oil content, polyunsaturated fatty acid content, flowering time, bolting time, cold tolerance, and nitrogen fixation. Related genes in other species are linked to shoot organogenesis, stomatal regulation, cytokinin response, nitric oxide emission, hypoxia response, cold stress, nitrite reduction, and nitric oxide scavenging.