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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

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Chromium toxicity in plants.

Arun K Shanker1, Carlos Cervantes, Herminia Loza-Tavera

  • 1Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India. arunshanker@mailcan.com

Environment International
|May 10, 2005
PubMed
Summary
This summary is machine-generated.

Chromium (Cr) contamination harms plants by affecting growth, photosynthesis, and metabolism. Plants may offer a solution for chromium bioremediation due to their ability to accumulate or stabilize this pollutant.

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Area of Science:

  • Environmental Science
  • Plant Biology
  • Toxicology

Background:

  • Chromium (Cr) is a widespread industrial pollutant impacting soil and water quality.
  • The toxicity of chromium to plants varies significantly with its valence state, with Cr(VI) being highly toxic and mobile, and Cr(III) being less so.
  • Plants absorb chromium via transporters for essential ions like sulfate and iron, lacking a specific uptake system.

Purpose of the Study:

  • To investigate the toxic effects of chromium on plant physiology and development.
  • To explore the potential of plants for the bioremediation of chromium-contaminated environments.

Main Methods:

  • Review of existing literature on chromium toxicity in plants.
  • Analysis of chromium uptake mechanisms in plants.
  • Examination of the physiological and metabolic impacts of chromium exposure on plants.

Main Results:

  • Chromium exposure negatively impacts plant germination, root, stem, and leaf growth, reducing overall yield.
  • Chromium disrupts critical physiological processes including photosynthesis, water relations, and mineral nutrition.
  • Chromium exposure can lead to metabolic alterations and oxidative stress in plants due to reactive oxygen species generation.

Conclusions:

  • Plants exhibit significant sensitivity to chromium contamination, with detrimental effects on growth and physiological functions.
  • The capacity of certain plants to accumulate or stabilize chromium compounds presents a promising avenue for bioremediation strategies.
  • Further research into plant-based chromium remediation is warranted given its environmental significance.