Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Bulletin of the Faculty of Agriculture, Shimane University 4

1970-12-15 発行

ダイコン子葉の葉緑体発生に対する4−チオウリジンの生理作用 : ゲル電気泳動法によるリボ核酸分析

Effect of 4-Thiouridine on Chloroplast Development in Radish Cotyledons Analysis of Ribonucleic Acids by Polyacrylamide Gel Electrophoresis

Ochiai, Hideo

Shibata, Hitoshi

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Analysis by the use of polyacrylamide gel electrophoresis was worked out for the comparative studies on chloroplast ribonucleic acids from radish cotyledons grown in the presence and absence of 4-thiouridine, which had been shown to prevent the formation of the functional proteins proper to the chloroplast such as protochlorophyllideholochrome and ribulose 1, 5-diphosphate carboxylase. The rate of de novo biosynthesis of chloroplast ribonucleic acids on illumination in the cotyledons cultured with 4-thiouridine was significantly delayed as compared with that of chloroplast ribonucleic acids from the cotyledons without 4-thiouridine.
On the other hand there was no difference in the formation of ribosomal ribonucleic acids between the 4-thiouridine treated plants and the untreated. The results obtained indicate that 4-thiouridine must have inhibited the development of proplastid (precursor of chloroplast) during the germination stage followed by the growth in the dark.

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AN00108015

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