HB1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0077260 (symbol HB1, also known as HvHB1) on barley chromosome 1H encodes a leghaemoglobin-like globin protein with oxygen carrier and binding activities, heme binding, redox activity, and TBP-class protein binding. The gene is associated with responses to hypoxia, flooding, salt, nitrate, nitrite, nitric oxide, cytokinin, and calcium or potassium starvation, as well as oxygen transport, fermentation, S-nitrosylation, NO storage, DNA-templated transcription initiation, and fatty acid and triglyceride metabolism. It has been linked to photosynthetic rate, stomatal resistance, chlorophyll and protein content, and traits including seed oil and fatty acid content, cold tolerance, drought tolerance, nitrogen metabolism and sensing, root architecture, early growth, flowering and bolting time, and shoot organogenesis. The protein localises to the nucleus, cytosol, cytoplasm, plasmalemma, plasmodesmata, and plant-type cell wall.