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Environmental Science and Pollution Research

, Volume 23, Issue 20, pp 20408–20430 | Cite as

Molybdenum (Mo) increases endogenous phenolics, proline and photosynthetic pigments and the phytoremediation potential of the industrially important plant Ricinus communis L. for removal of cadmium from contaminated soil

  • Fazal HadiEmail author
  • Nasir Ali
  • Michael Paul Fuller
Research Article

Abstract

Cadmium (Cd) in agricultural soil negatively affects crops yield and compromises food safety. Remediation of polluted soil is necessary for the re-establishment of sustainable agriculture and to prevent hazards to human health and environmental pollution. Phytoremediation is a promising technology for decontamination of polluted soil. The present study investigated the effect of molybdenum (Mo) (0.5, 1.0 and 2.0 ppm) on endogenous production of total phenolics and free proline, plant biomass and photosynthetic pigments in Ricinus communis plants grown in Cd (25, 50 and 100 ppm) contaminated soils and the potential for Cd phytoextraction. Mo was applied via seed soaking, soil addition and foliar spray. Foliar sprays significantly increased plant biomass, Cd accumulation and bioconcentration. Phenolic concentrations showed significantly positive correlations with Cd accumulation in roots (R 2 = 0.793, 0.807 and 0.739) and leaves (R 2 = 0.707, 721 and 0.866). Similarly, proline was significantly positively correlated with Cd accumulation in roots (R 2 = 0.668, 0.694 and 0.673) and leaves (R 2 = 0.831, 0.964 and 0.930). Foliar application was found to be the most effective way to deliver Mo in terms of increase in plant growth, Cd accumulation and production of phenolics and proline.

Keywords

Heavy metal Phytoextraction Foliar application of Mo Bioconcentration factor 

Notes

Acknowledgments

The Pakistan Science Foundation (PSF) is highly acknowledged for the full financial support. PSF has funded this project under Pak-US Natural Sciences Linkage Programme (NSLP) vide project No. PSF/NSLP/KP-UM (432).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of BiotechnologyUniversity of MalakandDir LowerPakistan
  2. 2.Department of Biotechnology and MicrobiologySarhad University of Science and Information TechnologyPeshawarPakistan
  3. 3.School of Biological SciencePlymouth UniversityDevonUK

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