Chromium stress in plants

By Sanjib Kumar Panda, S. Choudhury. 2005

433 citations recorded by the source corpus.

The article presents an overview of the mechanism of chromium stress in plants. Chromium is known to be a toxic metal that can cause severe damage to plants and animals. Chromium-induced oxidative stress involves induction of lipid peroxidation in plants that causes severe damage to cell membranes. Oxidative stress induced by chromium initiates the degradation of photosynthetic pigments causing decline in growth. High chromium concentration can disturb the chloroplast ultrastructure thereby disturbing the photosynthetic process. Like copper and iron, chromium is also a redox metal and its redox behaviour exceeds that of other metals like Co, Fe, Zn, Ni, etc. The redox behaviour can thus be attributed to the direct involvement of chromium in inducing oxidative stress in plants. Chromium can affect antioxidant metabolism in plants. Antioxidant enzymes like SOD, CAT, POX and GR are found to be susceptible to chromium resulting in a decline in their catalytic activities. This decline in antioxidant efficiency is an important factor in generating oxidative stress in plants under chromium stress. However, both metallothioneins and organic acids are important in plants as components of tolerance mechanisms and are also involved in detoxification of this toxic metal.

Subfields: Plant Science, Pollution

View Paper: https://www.semanticscholar.org/paper/3be1fdc58f7922de1deea1dcef55b8fed1362839

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In Plant Science

1. R. Azevedo
2. P. L. Gratão
3. P. Lea
4. Fei-bo Wu
5. M. Fulekar
6. A. Bhaduri
7. Shafaqat Ali
8. Helena Oliveira

In Pollution

1. Fei-bo Wu
2. Helena Oliveira
3. A. Bhaduri
4. M. Fulekar
5. A. Polle
6. K. Appenroth

Citations in the corpus

• Antioxidant enzyme responses of plants to heavy metal stress (2012, background): “Production of H2O2, OH - and O2 - under Cr stress has been demonstrated in many plants, generating oxidative stress leading to damage of DNA, proteins and pigments as well as initiating lipid peroxidation (Panda and Choudhury 2005).”
• Making the life of heavy metal-stressed plants a little easier. (2005, background): “Cr phytotoxicity can cause inhibition of seed germination, degradation of chlorophyll, alteration in chloroplast and membrane ultrastructure alterations, by the induction of oxidative stress (Panda et al. 2003; Panda and Choudhury 2005).”
• Chromium as an Environmental Pollutant: Insights on Induced Plant Toxicity (2012, background): “, [63, 66]), Juarez and coworkers [67] showed that ROS damages pigment-protein complexes located in thylakoid membranes followed by pheophitinization of chlorophylls (substitution of Mg2+ by H+ ions) and destruction of thylakoid membranes.”
• Subcellular distribution and chemical forms of chromium in rice plants suffering from different levels of chromium toxicity (2011, background): “It was reported that chromium, especially Cr6+, is a serious toxin that has no physiological function for plants (Panda and Choudhury, 2005).”
• Effects of zinc oxide nanoparticles on the growth, photosynthetic traits, and antioxidative enzymes in tomato plants (2018, background): “CAT mainly prevents the accumulation of H2O2, generated as a byproduct of plant metabolic processes (Panda and Choudhury 2005).”
• Heavy Metal Stress and Some Mechanisms of Plant Defense Response (2015, background): “Abolghassem Emamverdian,1,2 Yulong Ding,1,3 Farzad Mokhberdoran,4 and Yinfeng Xie1,2 1Center of Modern Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China 2College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China 3Bamboo Research…”