Functioning of Salt Tolerant Anabaena variabilis and Nostoc calcicola Strains in Salt Stress, Destructors of Hexachlorocyclohexane (HCH) in Saline Conditions

Gulchekhra Khakimovna Kadirova, Kim Andrey Andreevich, Lorenz Adrian, Rasulov Bakhtiyor

Abstract


We investigated the degradation of hexachlorocyclohexane (HCH) in soil by two cyanobacteria isolates Anabaena variabilis N 21 and Nostoc calcicola N 25 under high concentrations of NaCl. After four months of incubation cultures in saline soils with 4% NaCl decreased HCH concentrations considerably from 2 µg/g soil to 14 ng/g soil, representing 1% of the introduced HCH. In pure cultures 1 M NaCl was not lethal but significantly changed the morphology of the cyanobacteria. Enzyme assays for aldehyde oxidase and xanthine oxidase indicated the overexpression of xanthine oxidase in Nostoc calcicola N25 under salt-stress. Our results indicate that the strains can be used as biopreparations for bioremediation of salt-affected soils polluted with persistent chlororganic compounds often found in Uzbekistan soils.

Full Text: PDF DOI: 10.5539/enrr.v2n1p63

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Environment and Natural Resources Research   ISSN 1927-0488 (Print)   ISSN 1927-0496 (Online)

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the 'ccsenet.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.