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    Improved Sprouting and Growth of Mung Plants in Chromate Contaminated Soils Treated with Marine Strains of Staphylococcus Species

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    Date
    2017
    Author
    Pereira, E.J.
    Fonseca, S.
    Meena, R.M.
    Ramaiah, N.
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    Abstract
    Marine bacteria possess a wide variety of bioremediation potential which is beneficial environmentally and economically. In this study, bacterial isolates from marine waters were screened for tolerance and growth in high concentrations of chromate (Cr6+). Two isolates, capable of tolerating Cr6+ concentrations 300 �g mL?1 or higher, and found to completely reduce 20 �g mL?1 Cr6+ were grown in Cr6+ (50 and 100 mg kg?1) spiked garden soil. Notably, both facilitated normal germination and growth of mung (Vigna radiata) seeds, which could hardly germinate in Cr6+ spiked garden soil without either of these bacteria. In fact, large percent of mung seeds failed to sprout in the Cr6+ spiked garden soil and could not grow any further. Apparently, chromate detoxification by marine bacterial isolates and the ability of mung plants to deal with the reduced form appear to work complementarily. This study provides an insight into marine bacterial abilities with respect to chromium and potential applications in promoting growth of leguminous plants-similar to mung in particular-in Cr6+ contaminated soil.
    URI
    https://doi.org/10.1007/s12088-017-0668-y
    http://drs.nio.org/drs/handle/2264/7751
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