Significance of nitrate reductase in nitrate assimilation in free-livingRhizobium cultures |
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| Authors: | M H Siddiqui Anjali Mathur S N Mathur |
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| Institution: | (1) Plant Physiology Research Laboratory, Department of Botany, University of Gorakhpur, 273001 Gorakhpur, (India) |
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| Abstract: | Summary An in situ method for measuring nitrate reductase (NR) in free-livingRhizobium cultures has been developed. Arginine, threonine, valine, glutamic acid, tyrosine and tryptophan were found to promote NR synthesis. In root nodules rhizobial nitrate reductase also converts nitrate into NH4
+, thus it provides an alternative to the nitrogenase route for the formation of NH4
+.Acknowledgments: M.H.S. is grateful to the authorities of CSIR, New Delhi and Miss Anjali Mathur to the authorities of SCST, Lucknow (U.P.) for financial assistance. |
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