ABI5 — Medicago truncatula

Summary

MTR_2G086340 (ABI5, also known as MtDPBF2 or MtBZIP67) encodes a bZIP transcription factor with DNA-binding and transcription coactivator activities, as well as protein phosphatase activity. It is associated with the regulation of seed dormancy, gibberellic acid homeostasis, and abscisic acid signaling, including both upregulation and downregulation of these pathways. The gene is linked to numerous agronomically important traits, including seed set percent, seed longevity, seed fatty acid composition (omega-3, linoleic, linolenic, oleic, and eicosenoic acid content), nitrate sensitivity, salt tolerance, transpiration rate, stomatal aperture, plant size, stem elongation, leaf size, and flowering time. It is also connected to pollen fertility, male sterility, and trichome morphology. The encoded protein localizes to the nucleus, cytoplasm, and mitochondria.