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Gibberellin Signaling in Barley Aleurone Grain

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Description

GAs (Gibberellins) are members of a large family of Diterpenoid compounds, which are essential for a number of processes, including Gene Expression in Cereal Aleurones, Seed Germination, Elongation, Growth, and Flowering. During the last four decades, Barley Aleurone has been a valuable system for studying GA regulation of gene expression. After germination, GAs are released from the Embryo into the Endosperm, triggering the expression of a number of genes encoding Hydrolytic enzymes in Aleurone cells. Many of these Hydrolytic enzymes, which include Alpha-Amylase, Proteases, and Cell Wall–degrading enzymes, are secreted and are responsible for digestion of the stored reserves in the starchy endosperm. The Signal transduction events leading from the Receptor to the coordination of the Complex events that make [...]

References:

1.Update on gibberellin signaling. A tale of the tall and the short.
Thomas SG, Sun TP.
Plant Physiol. 2004 Jun;135(2):668-76.
2.Gibberellin metabolism and signaling.
Thomas SG, Rieu I, Steber CM.
Vitam Horm. 2005;72:289-338.
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