Inhibition of Gibberellic Acid-induced α-Amylase Formation by Polyethylene Glycol and Mannitol | Zendy

Russell L. Jones | Zendy

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Inhibition of Gibberellic Acid-induced α-Amylase Formation by Polyethylene Glycol and Mannitol

Author(s) -

Russell L. Jones

Publication year - 1969

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.44.1.101

Subject(s) - aleurone , gibberellic acid , polyethylene glycol , mannitol , amylase , peg ratio , biochemistry , proteolysis , chemistry , protein biosynthesis , gibberellin , enzyme , biology , germination , botany , finance , economics

Both polyethylene glycol (PEG) and mannitol inhibit gibberellic acid-induced alpha-amylase production in barley aleurone layers. The effect of the osmotic solution is on enzyme synthesis rather than alpha-amylase secretion. The inhibition of alpha-amylase synthesis does not appear to be mediated via an indirect effect on respiration or protein synthesis. Rather it seems that the osmotic solutions reduce the extent of proteolysis of the stored aleurone grain protein thus making available less substrate for new protein synthesis.

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