Aluminum (Al) Toxicity in Plants and Resistance Mechanism: A Review

By : Rajni Chauhan, Dheera Sanadhya, Mohd Shahnawaz

Page No: 73-86

Abstract
Aluminum (Al) is the major element in the soil and exists as a stable complex with oxygen and silicone. At acidic soil pH<5.5, Al gets solubilized in the soil water and becomes freely available for absorption by plant roots. Absorbed Al inhibits root elongation severely within hours. Thus, Al toxicity is a very important limiting factor of crop production around the world; as approximately 30% of the world’s ice free land areas are consist of acid soil. Al toxicity constraint the crop producing approximately 67% of the total acid soil. Thus, many researchers have been conducted to understand the mechanism of Al toxicity and resistance mechanism in plants. Basically, Al resistance can be achieved by mechanisms that facilitate Al exclusion from the root apex and/or by mechanisms that confer the ability of plants to tolerate Al in the plant symbolism. However, despite intense research efforts, there are many aspects of Al toxicity and resistance mechanism remains uncovered. This review is focused on the detailed aspects of Al toxicity in plants along with plant resistance mechanism to cope up the adverse effects.

Authors :
Mohammad Shahnawaz, Rajni Chauhan and Dheera Sanadhya : Jaipur National University, Jaipur-302017