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Starch Biosynthesis in the Developing Endosperms of Grasses and Cereals

Department of Molecular and Cellular Biology, College of Biological Science, University of Guelph, Guelph, ON N1G 2W1, Canada
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Agronomy 2017, 7(4), 81; https://doi.org/10.3390/agronomy7040081
Received: 31 October 2017 / Revised: 23 November 2017 / Accepted: 27 November 2017 / Published: 1 December 2017
(This article belongs to the Special Issue Starch Biosynthesis in Crop Plants)
The starch-rich endosperms of the Poaceae, which includes wild grasses and their domesticated descendents the cereals, have provided humankind and their livestock with the bulk of their daily calories since the dawn of civilization up to the present day. There are currently unprecedented pressures on global food supplies, largely resulting from population growth, loss of agricultural land that is linked to increased urbanization, and climate change. Since cereal yields essentially underpin world food and feed supply, it is critical that we understand the biological factors contributing to crop yields. In particular, it is important to understand the biochemical pathway that is involved in starch biosynthesis, since this pathway is the major yield determinant in the seeds of six out of the top seven crops grown worldwide. This review outlines the critical stages of growth and development of the endosperm tissue in the Poaceae, including discussion of carbon provision to the growing sink tissue. The main body of the review presents a current view of our understanding of storage starch biosynthesis, which occurs inside the amyloplasts of developing endosperms. View Full-Text
Keywords: amylopectin; amylose; cereals; debranching enzymes; endosperm; forage grasses; Poaceae; starch; starch synthase; starch branching enzyme amylopectin; amylose; cereals; debranching enzymes; endosperm; forage grasses; Poaceae; starch; starch synthase; starch branching enzyme
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Tetlow, I.J.; Emes, M.J. Starch Biosynthesis in the Developing Endosperms of Grasses and Cereals. Agronomy 2017, 7, 81.

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