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The Developing Starch Granule Part IV. Sucrose Synthase, Sucrase, and Starch Synthesis in Developing Wheat Grains

1976; Wiley; Volume: 28; Issue: 6 Linguagem: Inglês

10.1002/star.19760280602

2192-4236

Peter Meredith, L. D. Jenkins,

Phytase and its Applications

Abstract Developing wheat grains of three cultivars have been serially harvested and analyses made for sucrose synthase, sucrase, and amylase, and rate of starch deposition. The sucrose synthase and sucrase are demonstrated to be separate reactions but of similar activity through most of development. However, the sucrase of very early development stages appears to be another enzyme, of much higher activity. The synthase utilizes UDP (1) ‐glucose more effectively than ADP (1) ‐glucose. The time relationship between the synthase and an amylase with respect to starch synthesis has been determined.