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- Author or Editor: Patricia Spencer x
Abstract
Glutamate-14C and aspartate-14C were supplied to the roots of 1-year-old MM 106 rooted apple cuttings. Both compounds were readily absorbed and translocated to the aerial parts of the plants. Glutamate, and its metabolic products, tended to accumulate in phloem tissues to approximately the same levels as were detected in the xylem. This was in contrast to aspartate, and its products, which were concentrated in the xylem.
Extensive metabolism occurred during uptake and translocation with detectable level in respiratory CO2 and in protein. However, emphasis is given to the recovery of labeled amino acids in aerial tissues. This supports previous findings indicating the significance of amino acids as N carriers in the apple.