Transcription factor involved in abiotic stress responses. Plays a regulatory role in tolerance to salt, cold, and drought stresses. Regulates positively the expression of genes involved in proline synthesis and transport, and genes involved in reactive oxygen species (ROS) scavenging such as peroxidase, superoxide dismutase and catalase during salt stress. Transactivates stress-related genes, including LEA3, RAB16A and DREB2A during salt stress. Highly expressed in leaves. Expressed in roots and shoots. Expressed at low levels in flowers. Induced by salt, cold and osmotic stresses, and abscisic acid (ABA). Down-regulated by salicylic acid (SA). Plants over-expressing MYB2 show increased tolerance to salt, cold, and drought stresses, and increased sensitivity to abscisic acid (ABA).