N(2) fixation and h(2) evolution by six species of tropical leguminous trees |
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| Authors: | van Kessel C Roskoski J P Wood T Montano J |
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| Affiliation: | Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706. |
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| Abstract: | The C2H4/15N2 and H2/15N2 ratios for six species of tropical leguminous trees are reported. C2H4/15N2 ratios ranged from 2.4 to 4.7; values for the H2/15N2 ratios were between 0.6 and 1.4. Relative efficiency values, based on C2H2 reduction, 15N incorporation, and H2 evolution during 15N incorporation varied between 0.68 and 0.84 for the six species. Overall, approximately 30% of the electron flow through nitrogenase was used for H2 evolution. |
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