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Role of calcium in the inhibition of nitrogenase activity by Methylparathion and Benthiocarb in the cyanobacterium Nostoc muscorum

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Abstract

Methylparathion and Benthiocarb inhibition of N2 fixation in the cyanobacterium Nostoc muscorum was reversed by Ca2+ at 1 mm but not at 0.1 mm. The concentration of intracellular Ca2+ was relatively high in the presence of these pesticides when 1 mm Ca2+ was also present, indicating that intracellular Ca2+ may participate in protecting nitrogenase activity against Methylparathion and Benthiocarb.

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The authors are with the Department of Biochemistry, University College of Science, 35 Ballygunge Circular Road, Calcutta 700 019, India.

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Bhunia, A.K., Basu, N.K., Roy, D. et al. Role of calcium in the inhibition of nitrogenase activity by Methylparathion and Benthiocarb in the cyanobacterium Nostoc muscorum . World Journal of Microbiology & Biotechnology 10, 303–307 (1994). https://doi.org/10.1007/BF00414869

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  • DOI: https://doi.org/10.1007/BF00414869

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