Abstract
THE red pigment in the root nodules of a leguminous plant (Vicia Faba) was investigated for the first time by Pietz1. He believed it to be identical with the red intermediate product which appears during the oxidation of tyrosine or of dihydroxyphenylalanine ('dopa') catalysed by tyro-sinase. According to Pietz., the red pigment, by undergoing a reversible reduction, has the function of poising the oxido-reduction potential of the nodule at a level favourable for the proliferation of symbiotic bacteria inhabiting the nodule.
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References
Pietz, J., Z. Bakt., (2), 99, 1 (1938).
Kubo, H., Acta Phytochim., 11, 195 (1939).
Burris, R. M., and Haas, E., J. Biol. Chem., 155, 227 (1944).
Wilson, P. W., Ergeb. Enzymfor., 8, 13 (1939).
Wilson, P. W., "The Biochemistry of Symbiotic Nitrogen, Fixation" (Madison: The University of Wisconsin Press, 1940).
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KEILIN, D., WANG, Y. HæMoglobin in the Root Nodules of Leguminous Plants. Nature 155, 227–229 (1945). https://doi.org/10.1038/155227a0
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DOI: https://doi.org/10.1038/155227a0
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