Summary Approximately 30% of the global arable land in the world is acidic soils(pH<5)and Chinas acidic soil accounts for more than 21% of the area.Aluminum(Al)toxicity is a major limiting factor which limited crop production in acid soils.Al firstly inhibits the growth and development of plant roots.Consequently,it decreased the absorption of water and nutrients,which results in poor growth and production of plants.Therefore,in recent years,many researchers dedicated to study Al tolerance mechanisms and b...