Role of Glyoxylate in Biosynthesis of Acids in Tomato Fruit

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Abstract
The bio-synthetic mechanism for malic acid and citric acid in tomato fruit has been examined by a series of incorporation and radiorespirometric experiments employing glyoxylate-1- and-2-C14 as test substrates. The results indicate that in tomato fruit (a) glyoxylate can participate in respiratory functions, (b) the malate synthetase reaction is operative, (c) glyoxylate can be converted to glycine and serine via a sequence of reactions presumably similar to those described by Nakada (Jour. Biol. Chem. 233, 8-13, 1958), and (d) glyoxylate can be incorporated extensively into the carbohydrates of tomato fruit.