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<p>The presence and impact of bulk and rhizosphere microorganisms in contaminated soils can be huge, given that they have the ability to increase plants tolerance against abiotic stress, and also enhance plant growth, while supporting hastened remediation of disturbed soils. The present study quantitatively and qualitatively assessed presence of cultural fungi and bacteria during phytoremediation of heavy metal polluted soils using <italic>Chromolaena odorata</italic>. Stem cuttings of <italic>C. odorata</italic> were planted in soils polluted with Pb, Mn, Zn, Cd, and Cu at once (1ESC), thrice (3ESC) and five (5ESC) times their respective ecological screening concentrations (ESC). ESC of Pb, Mn and Zn is 50 mg/kg, Cd is 4 mg/kg, and Cu is 100 mg/kg. After 6 months, results showed that more than 10 species of bacteria and fungi were identified in the study, with <italic>P. aeruginosa</italic> and <italic>Bacillus subtilis</italic> being the most occurring bacteria while, <italic>Penicillium</italic> sp. and <italic>Aspergillus niger</italic> the most occurring fungi in both bulk and rhizospheric soils. The presence of known plant growth promoting rhizobacteria in plants rhizosphere including <italic>Azotobacter</italic> sp., <italic>Bacillus subtilis</italic>, <italic>B. pumilus, Clostridium</italic> sp., <italic>P. aeruginosa</italic>, and <italic>Klebsiella</italic> sp. was also reported.</p>
</abstract>

The presence and impact of bulk and rhizosphere microorganisms in contaminated soils can be huge, given that they have the ability to increase plants tolerance against abiotic stress, and also enhance plant growth, while supporting hastened remediation of disturbed soils. The present study quantitatively and qualitatively assessed presence of cultural fungi and bacteria during phytoremediation of heavy metal polluted soils using Chromolaena odorata. Stem cuttings of C. odorata were planted in soils polluted with Pb, Mn, Zn, Cd, and Cu at once (1ESC), thrice (3ESC) and five (5ESC) times their respective ecological screening concentrations (ESC). ESC of Pb, Mn and Zn is 50 mg/kg, Cd is 4 mg/kg, and Cu is 100 mg/kg. After 6 months, results showed that more than 10 species of bacteria and fungi were identified in the study, with P. aeruginosa and Bacillus subtilis being the most occurring bacteria while, Penicillium sp. and Aspergillus niger the most occurring fungi in both bulk and rhizospheric soils. The presence of known plant growth promoting rhizobacteria in plants rhizosphere including Azotobacter sp., Bacillus subtilis, B. pumilus, Clostridium sp., P. aeruginosa, and Klebsiella sp. was also reported.

Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using <italic>Chromolaena odorata</italic>

Department of Environmental Management and Toxicology

Federal University of Petroleum Resources

Environmental Biotechnology and Sustainability Research Group

Department of Plant Biology and Biotechnology, University of Benin

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using 

The presence and impact of bulk and rhizosphere microorganisms in contaminated soils can be huge, given that they have the ability to increase plants tolerance...

Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using Chromolaena odorata

Published Online: Dec 21, 2020

Page range: 145 - 151

Received: Jul 24, 2020

Accepted: Oct 22, 2020

DOI: https://doi.org/10.2478/auoc-2020-0023

Keywords
heavy metal, phytoremediation, pollution, microbes

© 2020 Gloria Omorowa Omoregie et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Quantitative and qualitative basement of microbial presence during phytoremediation of heavy metal polluted soil using Chromolaena odorata

Published Online: Dec 21, 2020

Page range: 145 - 151

Received: Jul 24, 2020

Accepted: Oct 22, 2020

DOI: https://doi.org/10.2478/auoc-2020-0023

Keywordsheavy metal, phytoremediation, pollution, microbes

© 2020 Gloria Omorowa Omoregie et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
heavy metal, phytoremediation, pollution, microbes