Bioremediation of HCH-contaminated soil: elimination of inhibitory effects of the insecticide on radish and green gram seed germination

Chemosphere
Rajkumar BidlanH K Manonmani

Abstract

The effects of technical grade hexachlorocyclohexane (tech-HCH) on the germination of different seeds were tested. Two types of seeds, radish and green gram showed marked reduction in germination percentage and seeding vigour index. The abnormalities and reduction in germination increased with increasing concentration of tech-HCH. At 100 microg HCH level the germination of radish and green gram seeds was inhibited almost completely on moist filter paper and soil. Protease and amylase activities were reduced in seeds grown in soil spiked with tech-HCH. Bioremediation of HCH-spiked soils with a HCH-degrading microbial consortium helped in eliminating the toxic effects of tech-HCH towards seed germination. The degradation of 25 microg tech-HCH g(-1) soil was complete by 120 h. The seed germination and the activities of the assayed enzymes, amylase and protease, were same as before or better in bioremediated soils.

References

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Sep 16, 1994·The Science of the Total Environment·S TanabeR Tatsukawa
Sep 20, 2000·Journal of Agricultural and Food Chemistry·H K ManonmaniA A Kunhi

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Citations

Jan 29, 2013·Environmental Monitoring and Assessment·Shuling SongHongbin Sun
Jan 14, 2012·Preparative Biochemistry & Biotechnology·Latha RangacharyManonmani Haravey Krishnan
Mar 4, 2010·Microbiology and Molecular Biology Reviews : MMBR·Rup LalJohn G Oakeshott
Jun 4, 2014·Journal of Hazardous Materials·Claire BlondelMuriel Raveton
Dec 25, 2012·Bulletin of Environmental Contamination and Toxicology·Sangeeta PaulMaheshwar S Rathi
Jul 31, 2012·Chemosphere·Juliana M SaezMaría J Amoroso
Mar 10, 2015·Ecotoxicology and Environmental Safety·JuanDaniel AparicioMarta Alejandra Polti
Jun 9, 2016·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Shamsa Akbar, Sikander Sultan

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