Silicon occurrence, uptake, transport and mechanisms of heavy metals, minerals and salinity enhanced tolerance in plants with future prospects: A review. (1st December 2016)

• Record Type: Journal Article
• Authors: Imtiaz, Muhammad; Rizwan, Muhammad Shahid; Mushtaq, Muhammad Adnan; Ashraf, Muhammad; Shahzad, Sher Muhammad; Yousaf, Balal; Saeed, Dawood Anser; Rizwan, Muhammad; Nawaz, Muhammad Azher; Mehmood, Sajid; Tu, Shuxin
• Is Part Of: Journal of environmental management. Volume 183:Part 3(2016)
• Page Start: 521
• Page End: 529
• Publication Date: 2016-12-01
• Subjects: Silicon -- Heavy metals -- Salinity -- Alleviation -- Abiotic stress -- Plant; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2016.09.009
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: Recently, heavy metals pollution due to industrialization and urbanization, use of untreated wastewater and unreasonable use of pesticides and fertilizers is increasing rapidly, resulting in major threat to the environment and contaminate soils. Silicon (Si) is the second most abundant element in the earth crust after oxygen. Although it's higher accumulation in plants, yet Si has not been listed as essential nutrient however, considered as beneficial element for growth of plants particularly in stressed environment. Research to date has demonstrated that silicon helps the plants to alleviate the various biotic and abiotic stresses. This review article presents a comprehensive update about Si and heavy metals, minerals and salinity stresses, and contained the progress about Si so far done worldwide in the light of previous studies to evaluate the ecological importance of Si. Moreover, this review will also be helpful to understand the Si uptake ability and its benefits on plants grown under stressed environment. Further research needs for Si-mediated mitigation of heavy metals and mineral nutrients stresses are also discussed. Highlights: Si is a beneficial nutrient and plays imperative role in metabolic system of plants. Bioavailability of Si depends upon different factors. Si induces resistance in plants against various abiotic stresses. Metals are becoming serious environmental issue and factor of food contamination. Various mechanisms involved in Si-mediated alleviation of abiotic stress.