♦AGPase, ADPglucose pyrophosphorylase; GBSS, granule bound starch synthase; SS, soluble starch synthase; SBE, starch branching enzyme synthesis. With the advent of techniques to transgenically produce 'knock-out' mutants in plants, it should be possible to create null mutants, even in genes such as sbeb. It would also help isolate the gene product responsible for the granule formation of starch. Such revolutionary approaches would expedite our understanding of plant starch synthesis and aid in the engineering of starch types desired by various consumers.
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