Progress in Research on the Environmental Behaviors of Aluminum in Plant Rizosphere
植物根际微生态区域中铝的环境行为研究进展

Aluminum (Al) toxicity has been widely considered to be the most important growth-limiting factor for plants in strongly acid soils (pH<5.0). Toxic Al ions around root systems may affect the capacity for mineral nutrient acquisition and increase the risk of Al stress for plant species. Al-induced exudation of organic acids, biological enzymes and other compounds from roots is specific to Al tolerance in some plant species. Three principal mechanisms (external, internal and genic) of plants for adaptation to tolerant and avoid soil Al toxicity are introduced in this review. Finally, the trends for the future development in this field are prospected.