Research advance on the physiologically molecular mechanisms for plant heavy metal tolerance

摘要

Plants posses homeostasis mechanisms to minimize the damage from exposure to heavy metal stress. These mechanisms involve in the binding of heavy metals to cell wall, immobilization exclusion of the plasma membrane, efflux of these toxic metal ions, reduction of heavy metal transport, compartmentalization and metal chelation by tonoplast-located transporters, expression of more general stress response mechanisms such as stress proteins. This review provides a broad overview of the molecular mechanisms involved in heavy metal detoxification and tolerance.