Aluminum in plant: Benefits, toxicity and tolerance mechanisms.

Front Plant Sci

Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada.

Published: January 2023

AI Article Synopsis

  • Aluminum is the third most abundant metal in the earth's crust, and its effects on plants vary based on concentration, plant species, and growing conditions.
  • While aluminum can promote growth and help plants deal with stresses, its exact biological role is still unclear.
  • Aluminum poses a significant challenge for plant growth in acidic soils, leading to issues like inhibited root growth and reduced nutrient uptake, but research into its benefits and tolerance mechanisms could inform future crop improvements.

Article Abstract

Aluminum (Al) is the third most ubiquitous metal in the earth's crust. A decrease in soil pH below 5 increases its solubility and availability. However, its impact on plants depends largely on concentration, exposure time, plant species, developmental age, and growing conditions. Although Al can be beneficial to plants by stimulating growth and mitigating biotic and abiotic stresses, it remains unknown how Al mediates these effects since its biological significance in cellular systems is still unidentified. Al is considered a major limiting factor restricting plant growth and productivity in acidic soils. It instigates a series of phytotoxic symptoms in several Al-sensitive crops with inhibition of root growth and restriction of water and nutrient uptake as the obvious symptoms. This review explores advances in Al benefits, toxicity and tolerance mechanisms employed by plants on acidic soils. These insights will provide directions and future prospects for potential crop improvement.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9880555PMC
http://dx.doi.org/10.3389/fpls.2022.1085998DOI Listing

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