Co-Authors:
Schaffer, A.A., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO-Voicani Center, Bet Dagan, Israel 50 250, Israel
Rylski, I., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO-Voicani Center, Bet Dagan, Israel 50 250, Israel
Fogelman, M., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO-Voicani Center, Bet Dagan, Israel 50 250, Israel
Abstract:
Soluble sugars, starch, invertase and sucrose synthase activities were measured in developing fruit of pepino (Solanum muricatum). Sucrose was present in low amounts during the early stages of growth and its accumulation began when the fruit neared full size. Starch, present in the immature fruit, was nearly absent in the mature fruit Soluble acid invertase (E.C. 3.2.1.26) activity was high in the young developing fruit but decreased to low levels, concomitant with the onset of sucrose accumulation. Sucrose synthase (E.C. 2.4.1.13) activity which was low in the young fruit, rose to high levels in the mature fruit. Acid invertase of young fruits showed an apparent Km of 3 mM sucrose while sucrose synthase activity showed an apparent Km of 49 mM. The results are discussed in terms of the metabolic events associated with sucrose accumulation. © 1989.
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