Plants exert beneficial influence on soil microbiome in a HCH contaminated soil revealing advantage of microbe-assisted plant-based HCH remediation of a dumpsite
| Autor: | Raj Kumar Regar, Natesan Manickam, Aditi Roy, Saroj Kanta Barik, Vivek Kumar Gaur, Pankaj Srivastava, Ispreet Kaur, Rajeev Gaur |
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| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Soil test Environmental remediation Health Toxicology and Mutagenesis 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences Biology 01 natural sciences Actinobacteria Soil Bioremediation Soil Pollutants Environmental Chemistry Microbial inoculant Soil Microbiology 0105 earth and related environmental sciences Rhizosphere Microbiota Public Health Environmental and Occupational Health General Medicine General Chemistry biology.organism_classification Pollution Soil contamination 020801 environmental engineering Biodegradation Environmental Agronomy Soil water Hexachlorocyclohexane |
| Zdroj: | Chemosphere. 280:130690 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2021.130690 |
| Popis: | Persistence of hexachlorocyclohexane (HCH) pesticide is a major problem for its disposal. Soil microflora plays an important role in remediating contaminated sites. Keeping concepts of microbial- and phyto-remediation together, the difference between soil microflora with and without association of HCH accumulating plant species was studied. Metagenomic analysis among the non-plant soil (BS) (∑HCH 434.19 mg/g), rhizospheric soil of shrubs (RSS) (∑HCH 157.31 mg/g), and rhizospheric soil of trees (RSD) (∑HCH 105.39 mg/g) revealed significant differences in microbial communities. Shrubs and trees occurred at a long-term dumpsite accumulated α- and β- HCH residues. Plant rhizospheric soils exhibited high richness and evenness with higher diversity indices compared to the non-plant soil. Order Rhizobiales was most abundant in all soils and Streptomycetales was absent in the BS soil. Proteobacteria and Ascomycota were highest in BS soil, while Actinobacteria was enriched in both the plant rhizospheric soil samples. In BS soil, Pseudomonas, Sordaria, Caulobacter, Magnetospirillum, Rhodospirillum were abundant. While, genera Actinoplanes, Streptomyces, Bradyrhizobium, Rhizobium, Azospirillum, Agrobacterium are abundant in RSD soil. Selected plants have accumulated HCH residues from soil and exerted positive impacts on soil microbial communities in HCH contaminated site. This study advocates microbe-assisted plant-based bioremediation strategy to remediate HCH contamination. |
| Databáze: | OpenAIRE |
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