Research progress of HAK/KUP/KT potassium transporter family in plant response to salt stress

Potassium is involved in plant growth and development in a variety of ways and also plays an important role in mitigating salt stress. HAK/KUP/KT is the largest family of potassium transporters in plants. We summarized its roles in potassium absorption, transportation, physiological function, and molecular mechanisms in response to salinity stress. Future development of the HAK/KUP/KT family is discussed.