Impact of heavy metal stress on plants and the role of various defense elements

Iranian Journal of Plant Physiology

مقاله 1، دوره 9، شماره 4، آبان 2019، صفحه 2883-2900   

نوع مقاله: Reviews

شناسه دیجیتال (DOI): 10.30495/ijpp.2019.668855

نویسندگان

Tanveer Bilal Pirzadah^{* 1}؛ Bisma Malik¹؛ Sheikh Tanveer Salam²؛ Pervaiz Ahmad Dar²؛ Seema Rashid²

¹Department of Bioresources, University of Kashmir, Srinagar 190006, Jammu and Kashmir, India

²Department of Zoology, Amar Singh College, Cluster University, Srinagar (J&K)

چکیده

Heavy metal (HMs) pollution is currently one of the serious issues for the environment and agriculture as it has a direct impact on the production yield. This situation has gained a rapid momentum in the present era due to the population pressure, industrialization, and various anthropogenic activities which in turn lead to oxidative stress in plants and thus disturbs the redox homeostasis and ultimately affects the crop yield. However, plants possess a different regulatory system that work in a synergetic manner to combat stress and thus adapt themselves in such contaminated soils. These act as sinks to neutralize the toxic effects of these heavy metals by chelation, sequestration, and intensification of enzyme system. Excessive stress induces a cascade, MAPK (mitogen-activated protein kinase) pathway and biosynthesis of metal detoxifying ligands. The understanding of detoxification mechanism of metal ions through MAPK cascade and biosynthesis of metal-detoxifying ligands is an interesting way for searching insights and outlook in the field of plant biotechnology. Here, we discuss the impact of heavy metals on plants and the role of different regulatory elements that play a prominent role in metal detoxification.

کلیدواژه‌ها

Heavy metals؛ ROS؛ MAPK pathway؛ metallothioneins؛ transcription factors

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