Structural changes in response to bioaccumulation of iron and mercury in Chromolaena odorata (L.) King & Robins.

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• 作者：K. S. Swapna ; Nabeesa Salim ; Ratheesh Chandra…
• 关键词：Chromolaena odorata ; Anatomy ; Iron ; Mercury ; Bioaccumulation
• 刊名：Environmental Monitoring and Assessment
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：187
• 期：9
• 全文大小：8,775 KB
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• 作者单位：K. S. Swapna (1)
  Nabeesa Salim (1)
  Ratheesh Chandra (1)
  Jos T. Puthur (1)
  
  1. Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C.U. Campus P.O., Kerala, 673635, India
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  Ecology
  Atmospheric Protection, Air Quality Control and Air Pollution
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-2959

文摘

A comparative study was designed to elucidate the effect of iron and mercury on the morphological and anatomical changes as well as bioaccumulation potential in Chromolaena odorata. Plants were grown in half-strength Hoagland nutrient medium artificially contaminated with known quantities of HgCl2 (15?μM) and FeCl3 (1000?μM). Bioaccumulation of Hg and Fe was maximum in the root, and comparatively reduced bioaccumulation was recorded in the stem and leaves. Microscopic studies on morphology and anatomy revealed development of trichomes and lenticels on the stem and modified trichomes on leaves. Localized deposits of stained masses in various internal parts of the root, stem and leaf also were observed. Differential adaptation/strategy of C. odorata to attain tolerance towards Hg and Fe and phytoremediation potential of the plant is discussed.