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The Developing Starch Granule Part IV . Sucrose Synthase, Sucrase, and Starch Synthesis in Developing Wheat Grains
Author(s) -
Meredith P.,
Jenkins L. D.
Publication year - 1976
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19760280602
Subject(s) - sucrase , starch , sucrose synthase , starch synthase , sucrose , amylase , chemistry , atp synthase , biochemistry , enzyme , sucrose phosphate synthase , carbohydrate , food science , amylose , invertase , amylopectin
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.