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Effects of Kinetin on Growth and Nucleic Acid Metabolism in Suspension Cultures of L. Cucumis melo

Effects of Kinetin on Growth and Nucleic Acid Metabolism in Suspension Cultures of L. Cucumis melo Abstract At 0.05 and 0.5 mg per 1 of kinetin growth of cucumber suspension cultures were promoted and at a higher level (5.0 mg per 1) it was inhibited. Total nucleic acids and protein increased during the lag phase and declined during the phase of exponential growth. The nucleotides increased before there was any appreciable increase in the amount of supernatant ribonucleic acid. The RNA, soluble protein and ribo-nuclease activity also rose during the early period of growth and subsequently fell. Higher amounts of nucleotides, RNA and soluble protein were present at growth promoting kinetin concentrations, but these were in smaller amounts at supra-optimal kinetin levels. But the rate of decline during the period of increase in dry weight was slower compared to the rest. There was reduced activity of RNase, which also followed RNA and soluble protein in the pattern of changes during the course of culture. This content is only available as a PDF. © 1977 Annals of Botany Company http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of Botany Oxford University Press

Effects of Kinetin on Growth and Nucleic Acid Metabolism in Suspension Cultures of L. Cucumis melo

VAJRANABHAIAH, S., N.; MEHTA, A., R.
Annals of Botany , Volume 41 (3) – May 1, 1977
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Publisher
Oxford University Press
Copyright
© 1977 Annals of Botany Company
ISSN
0305-7364
eISSN
1095-8290
DOI
10.1093/oxfordjournals.aob.a085317
Publisher site
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Abstract

Abstract At 0.05 and 0.5 mg per 1 of kinetin growth of cucumber suspension cultures were promoted and at a higher level (5.0 mg per 1) it was inhibited. Total nucleic acids and protein increased during the lag phase and declined during the phase of exponential growth. The nucleotides increased before there was any appreciable increase in the amount of supernatant ribonucleic acid. The RNA, soluble protein and ribo-nuclease activity also rose during the early period of growth and subsequently fell. Higher amounts of nucleotides, RNA and soluble protein were present at growth promoting kinetin concentrations, but these were in smaller amounts at supra-optimal kinetin levels. But the rate of decline during the period of increase in dry weight was slower compared to the rest. There was reduced activity of RNase, which also followed RNA and soluble protein in the pattern of changes during the course of culture. This content is only available as a PDF. © 1977 Annals of Botany Company

Journal

Annals of Botany – Oxford University Press

Published: May 1, 1977

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