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Starch content and yield increase as a result of altering adenylate pools in transgenic plants

MPG-Autoren

Regierer,  Babette
Max Planck Society;

Fernie,  Alisdair R.
Max Planck Society;

Springer,  Franziska
Max Planck Society;

Perez-Melis,  Alicia
Max Planck Society;

Leisse,  Andrea
Max Planck Society;

Koehl,  Karin
Max Planck Society;

Willmitzer,  Lothar
Max Planck Society;

Geigenberger,  Peter
Max Planck Society;

Kossmann,  Jens
Max Planck Society;

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Zitation

Regierer, B., Fernie, A. R., Springer, F., Perez-Melis, A., Leisse, A., Koehl, K., et al. (2002). Starch content and yield increase as a result of altering adenylate pools in transgenic plants. Nature Biotechnology, 20(12), 1256-1260.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-8B79-7
Zusammenfassung
Starch represents the most important carbohydrate used for food and feed purposes. With the aim of increasing starch content, we decided to modulate the adenylate pool by changing the activity of the plastidial adenylate kinase in transgenic potato plants. As a result, we observed a substantial increase in the level of adenylates and, most importantly, an increase in the level of starch to 60% above that found in wild-type plants. In addition, concentrations of several amino acids were increased by a factor of 2–4. These results are particularly striking because this genetic manipulation also results in an increased tuber yield. The modulation of the plastidial adenylate kinase activity in transgenic plants therefore represents a potentially very useful strategy for increasing formation of major storage compounds in heterotrophic tissues of higher plants.