The Effects of Abscisic Acid on Growth and Nucleic Acid Synthesis in Excised Embryonic Bean Axes
- 1 January 1970
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 45 (1) , 37-40
- https://doi.org/10.1104/pp.45.1.37
Abstract
Abscisic acid (ABA) is an effective inhibitor of cell elongation in excised embryonic bean axes whether added prior to or after the initiation of cell elongation. Zeatin partially reverses this growth inhibition. ABA inhibits 32P incorporation into ribosomal RNA, transfer RNA, and DNA but not into the tenaciously bound fraction of elongating axes in a manner resembling 5-fluorouracil, a compound which does not inhibit axis growth. The methylated albumin on kie-selguhr elution profiles of nucleic acids obtained from axes treated with either ABA, 5-fluorouracil, or a combination of the two are similar, and zeatin treatment has little apparent effect on these results. Our results suggest that the inhibition of growth in the axes by ABA is not due to its inhibition of DNA synthesis.Keywords
This publication has 11 references indexed in Scilit:
- Effect of Abscisic Acid on Activity of ChromatinNature, 1969
- Germination of Excised Fraxinus ornus Embryos With and Without PhleomycinPlant Physiology, 1967
- Hormonal Control of Enzyme Synthesis: On the Mode of Action of Gibberellic Acid and Abscisin in Aleurone Layers of BarleyPlant Physiology, 1967
- Dormin (Abscisin II), Inhibitor of Plant DNA Synthesis?Science, 1967
- Germination of Phaseolus Vulgaris I. Resumption of Axis GrowthPlant Physiology, 1966
- Estimation of SphingomyelinNature, 1965
- Nucleic Acid Metabolism in Peanut CotyledonsPlant Physiology, 1965
- Association of Rapidly Metabolized DNA and RNAScience, 1964
- Isolation and purification of undegraded ribonucleic acidsBiochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects, 1964
- Fractionation of nucleic acids with the methylated albumin columnJournal of Molecular Biology, 1962