Chromium as an Environmental Pollutant: Insights on Induced Plant Toxicity

By Helena Oliveira. 2012

574 citations recorded by the source corpus.

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. Cr exists in several oxidation states but the most stable and common forms are Cr(0), Cr(III) and Cr(VI) species. Cr toxicity in plants depends on its valence state. Cr(VI) as being highly mobile is toxic, while Cr(III) as less mobile is less toxic. Cr is taken up by plants through carriers of essential ions such as sulphate. Cr uptake, translocation, and accumulation depend on its speciation, which also conditions its toxicity to plants. Symptoms of Cr toxicity in plants are diverse and include decrease of seed germination, reduction of growth, decrease of yield, inhibition of enzymatic activities, impairment of photosynthesis, nutrient and oxidative imbalances, and mutagenesis.

Subfields: Health, Toxicology and Mutagenesis, Pollution, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/d1958077da9396dbd4d4690dd414315341687d43

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Pollution

1. S. Prasad
2. Shivesh Sharma

Citations in the corpus

• Acquisition and Homeostasis of Iron in Higher Plants and Their Probable Role in Abiotic Stress Tolerance (2018, background): “Iron and Heavy Metal Stress Rapid technical development in different sectors of agriculture, industries, and anthropogenic activities have resulted in an abundant release of heavy metals (Young et al., 2009; Oliveira, 2012; Kumar et al., 2013).”
• Heavy Metal Stress and Some Mechanisms of Plant Defense Response (2015, background): “Immobilization of chromium in vacuole of plant root cells is suggested as a main reason for the excessive accumulation of this metal in roots [36, 37].”
• Hemin-mediated alleviation of zinc, lead and chromium toxicity is associated with elevated photosynthesis, antioxidative capacity; suppressed metal uptake and oxidative stress in rice seedlings (2017, background): “These responses finally assure hemin to exert protective effects in an HO1-dependent manner (Xuan et al. 2008; Xie et al. 2011).”