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. 1974 Jul;54(1):15–18. doi: 10.1104/pp.54.1.15

A Synergistic Stimulation of Avena sativa Coleoptile Elongation by Indoleacetic Acid and Carbon Dioxide 1

A W Bown a, I J Dymock a, T Aung a,2
PMCID: PMC541494  PMID: 16658829

Abstract

The ability of 0.03% CO2 to stimulate growth has been investigated using etiolated Avena coleoptile sections maintained in buffered solution. This concentration of CO2-stimulated growth after a lag period of 12 to 15 minutes, and a synergistic relationship between indoleacetic acid and CO2 in stimulating growth has been demonstrated. The response to CO2 is inhibited by cycloheximide and is lost approximately 10 minutes after exposure to CO2-free air. Malate can replace CO2 in stimulating growth. In the light of these data and recent literature on a growth response of coleoptile sections to CO2-saturated solutions, the existence of two mechanisms of CO2-simulated growth is proposed. In addition, it is suggested that growth promotion by 0.03% CO2 is mediated by a process involving dark CO2 fixation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Barkley G. M., Leopold A. C. Comparative effects of hydrogen ions, carbon dioxide, and auxin on pea stem segment elongation. Plant Physiol. 1973 Jul;52(1):76–78. doi: 10.1104/pp.52.1.76. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Evans M. L., Ray P. M., Reinhold L. Induction of coleoptile elongation by carbon dioxide. Plant Physiol. 1971 Mar;47(3):335–341. doi: 10.1104/pp.47.3.335. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Evans M. L., Ray P. M. Timing of the auxin response in coleoptiles and its implications regarding auxin action. J Gen Physiol. 1969 Jan;53(1):1–20. doi: 10.1085/jgp.53.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Leonard O. A., Pinckard J. A. EFFECT OF VARIOUS OXYGEN AND CARBON DIOXIDE CONCENTRATIONS ON COTTON ROOT DEVELOPMENT. Plant Physiol. 1946 Jan;21(1):18–36. doi: 10.1104/pp.21.1.18. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. RANSON S. L. Zymasis and acid metabolism in higher plants. Nature. 1953 Aug 8;172(4371):252–253. doi: 10.1038/172252a0. [DOI] [PubMed] [Google Scholar]
  6. Rayle D. L., Cleland R. Enhancement of wall loosening and elongation by Acid solutions. Plant Physiol. 1970 Aug;46(2):250–253. doi: 10.1104/pp.46.2.250. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Splittstoesser W. E. Dark CO(2) Fixation and its Role in the Growth of Plant Tissue. Plant Physiol. 1966 May;41(5):755–759. doi: 10.1104/pp.41.5.755. [DOI] [PMC free article] [PubMed] [Google Scholar]

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