Influence of some organic acids on the activity of the malate dehydrogenase of cotton seeds
1. β-(Indol-3-yl)acetic acid (IAA) and butyric, phenylbutyric, α-aminobutyric, and γ-aminobutyric acids have an activating effect on the malate dehydrogenase (MDH) of dormant and sprouting cotton seeds, while γ-aminobutyric acid inhibits the MDH of the sprouting seeds.
2. The maximum MDH activity is found on the fifth day of sprouting of cotton seeds. The preliminary steeping of the seeds in solutions of organic acids changes the time of maximum activity to the first and second days.
KeywordsDormant Seed Cotton Seed Aminobutyric Acid Oxaloacetic Acid Indolylacetic Acid
- 1.J. Van Overbeek, Science,152, 3223 (1966).Google Scholar
- 2.A. A. Zemlyanukhin, in: Plant-Growth Regulators [in Russian] (1964), p. 85.Google Scholar
- 3.V. L. Kretovich, T. A. Severnaya, and R. G. Butenko, Dokl. Akad. Nauk SSSR,191, 474 (1970).Google Scholar
- 4.A. S. Levina, in: The Regulation of the Growth and Development of Plants by Means of Chemical Agents, Nuclear Radiation, and the Conditions of the External Environment [in Russian] (1968), p. 262.Google Scholar
- 5.K. Davranov, M. A. Kuchenkova, and P. Kh. Yuldashev, Khim. Prirodn. Soedin., 645 (1970).Google Scholar
- 6.O. Warburg and W. Christian, Biochem. Z.,310, 384 (1941–1942).Google Scholar