Exudation and Accumulation of Organic Acids in the Roots of Common Bean (Phaseolus vulgaris L.) in Response to Low Phosphorus and Aluminum Toxicity Stress
低磷和铝毒胁迫条件下菜豆有机酸的分泌与累积

Low avaliability of soil phosphorus (P) and high activity of aluminum (Al) ion are two primary constraints to crops grown on tropical acid soils.These two factors limited common bean production severely in South China.The proposed mechanisms of Al resistance in plants are usually divided into external exclusion and internal tolerance.However,the internal tolerance mechanism hypothesis could not explain how Al\|sensitive apoplastic functions are protected from Al toxicity.Therefore,recent studies have focus...