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    A deep-sea bacterium with unique nitrifying property

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    Curr_Sci_80_1222.pdf (45Kb)
    Date
    2001
    Author
    Ram, A.
    LokaBharathi, P.A.
    Nair, S.
    Chandramohan, D.
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    Abstract
    Sediment cores collected from the Central Indian Basin (10°1¢–10°2¢S, 75°59¢–76°2¢E) harboured a high population of nitrifying bacteria which ranged from 103 to 107 cfu per gram dry weight. This high density could contribute to the high nitrate concentration observed in these sediments. We report for the first time the unusual property of having both the phases of nitrification, i.e. NH4+ -> NO2– (Phase I) and NO2– -> NO3– (Phase II) under normal and high pressure conditions in an autotrophic nitrifying bacterium isolated from the deep sediments cores at 5000 m depth (15–20 cm below the sea floor).
    URI
    http://drs.nio.org/drs/handle/2264/266
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