Summary
The presence of succinic dehydrogenase and oxidase has been demonstrated in young seedlings and pods of certain leguminosæ. The enzyme could not be detected in leaves and shoots of mature plants of the same species nor in seedlings of certain other species.
A highly active preparation of the enzyme has been made from seedlings ofPhaseolus mungo. A detailed study shows that the properties and behaviour of this enzyme are in all respects analogus to those for muscle succin-oxidase.
The presence of the enzyme in seedlings and pods of leguminosæ where asparagine formation is known to be predominant, lends support to the view that succinic acid is a precursor of asparagine in plants.
In view of the restricted occurrence of the enzyme, it is premature to postulate the existence of the succinate and citrate cycles in plant respiration.
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(Communicated by Sir C. V. Raman, Kt.,f.r.s., n.l.)
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Damodaran, M., Venkatesan, T.R. Amide synthesis in plants. Proc. Indian Acad. Sci. 13, 345–359 (1941). https://doi.org/10.1007/BF03048490
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DOI: https://doi.org/10.1007/BF03048490