Excess Cr Chromium can exist in its elemental form (chromium 0) as well as chromium III and chromium VI ‑ the Roman numerals denote the valency. Journal of Plant Nutrition, 25, 2389-2407. Chromite mining activities are indispensable for production of goods and services. Various past and recent studies highlight the biogeochemistry of Cr in the soil-plant system. Chromium (III) is less toxic than chromium (VI). Cr toxicity in plants depends on its valence state. It is the seventh most abundant metal due to its wide applications at the industrial scale (Panda and Choudhury, 2005). chromium in some plants cultivated along the bank of river Ribilia at. Author information: (1)a Institute of Plant Sciences , … Cr plant tolerance and phytoremediation. [6] Shanker A.K. 1). Plant. Physiological, biochemical and molecular aspects of chromium toxicity and tolerance in selected crops and tree species. YadavHeavy metals toxicity in plants: an overview on the role of glutathione and phytochelatins in heavy metal stress tolerance of plants South … Other metals like Pb, Cd, As, Se, Cr and Al are biologically non-essential and toxic above certain threshold levels. and R. Ryan: Aluminum toxicity and tolerance in plants. International Journal of … [5] Mei B., Puryear J.D. In the past decades the increased use of chromium (Cr) in several anthropogenic activities and consequent contamination of soil and water have become an increasing concern. This is largely due the reason that most of the research has been focused on enhancing phytoaccumulation of Cr by plants and trees for its use in phytoremediation. ... Delhaize, E.P. Chromium (Cr) is a potentially toxic heavy metal which does not have any essential metabolic function in plants. (Fig. Evaluation of chromium phyto-toxicity, phyto-tolerance, and phyto-accumulation using biofuel plants for effective phytoremediation. Chromium is a naturally occurring element in rocks and soil. (2003). In our experiment, germination and viability of seeds were negatively affected by elevated Cr concentration. 5. Chromium Chromium in Soil and Plants. Evaluation of chromium phyto-toxicity, phyto-tolerance, and phyto-accumulation using biofuel plants for effective phytoremediation. S.K. Physiol., 107, 315-321 (1995). Cr exists in several oxidation states but the most stable and common forms are Cr(0), Cr(III) and Cr(VI) species. Literature survey shows that very few workers have reported ameliorative measures for Cr toxicity in crop plants. This review traces a plausible link among Cr speciation, bioavailability, phytouptake, phytot … Assessment of Cr tolerance and accumulation in selected plant species, Plant and Soil, 247, 223-231. The Sukinda valley is a rich source of chromites, amounting to almost 95% of Cr available in India, and is the fourth most polluted site worldwide. Plants show a great variation in their tolerance to Cr in the environment and Cr toxicity depends upon the plant species and the source (Lopez-Luna et al., 2009). Chromium is also one of the toxic heavy metals and it is categorized as an important environmental contaminant. Sukinda is a major mining site of Odisha, India, polluted by chromium, which is highly toxic in its hexavalent form. Chromium toxicity in plants Heavy metals like Zn, Fe, Cu, Mn are essential for plant growth and important constituents of many enzymes of metabolic importance. Chromium toxicity however depends on its oxidation state. Amin H(1), Ahmed Arain B(1), Abbasi MS(2), Amin F(3), Jahangir TM(4), Soomro NU(1). (2019). Natural soil typically contains between 10 and 50 mg of chromium for every kg of soil. & Newton R.J. (2002). Also one of the toxic heavy metal which does not have any essential metabolic function in plants of goods services. 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