Turnover of Ribosomes in Embryoless Half-Seeds of Barley Induced by Gibberellic Acid

Nature New BiologyPublished 1 April 1973

P. L. HOLMES, P. T. Speakman

Citations12

TL;DR

During germination of barley the cells of the aleurone layer, which surround the starchy endosperm, synthesize and secrete hydrolytic enzymes and a ribonuclease and this is induced by gibberellic acid which originates in the embryo of the seed and passes to theAleurone cells by the scutellum.

Abstract

During germination of barley the cells of the aleurone layer, which surround the starchy endosperm, synthesize and secrete hydrolytic enzymes and a ribonuclease. This is induced by gibberellic acid (GA) which originates in the embryo of the seed and passes to the aleurone cells by the scutellum1. If the seeds are cut in half laterally, the half-seeds without embryo will secrete hydrolytic enzymes if they are given a low concentration of GA in dilute aqueous buffer. Incubated in the absence of GA, their aleurone cells do not secrete the enzymes2.

Keywords

Agricultural and Biological SciencesBiochemistry, Genetics and Molecular Biology

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