Patents Represented by Attorney Ribando

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  • Enhancement of nitrogen fixation with Bradyrhizobium japonicum mutants
    Patent number: 5021076
    Abstract: A prototrophic revertant of a Bradyrhizobium japonicum tryptophan auxotroph was isolated and found to fix more nitrogen symbiotically than wild-type bacteria. The increase in nitrogen fixation is due to an increase in nodule mass because of an increase in nodule number. The physiological basis for this improved symbiosis appears to be an alteration of the tryptophan biosynthetic pathway.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: June 4, 1991
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Larry D. Kuykendall, William J. Hunter