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. 1985 Mar;77(3):552–555. doi: 10.1104/pp.77.3.552

Rapid Suppression of Extension Growth in Dark-Grown Wheat Seedlings by Red Light 1

Wilfrid Bleiss 1,2, Harry Smith 1
PMCID: PMC1064562  PMID: 16664096

Abstract

Continuous recordings were made using a linear displacement transducer to investigate short-term growth responses of intact dark-grown wheat (Triticum aestivum L. cv Maris Huntsman) seedlings to red light. To eliminate any effect of light prior to the experimental treatments, the seedlings were grown and mounted on the transducer apparatus in total darkness. The growth kinetics after irradiation were complex and appeared to consist of three successive phases of growth deceleration. When the tip of the intact coleoptile was irradiated with red light from two opposite fiber bundles (fluence rate: 2 × 64 micromoles per square meter per second) for varying periods of time (10 seconds, 1 minute, 5 minutes, continuous), a decrease in extension rate was detectable after a latent period of 8 to 10 minutes. Up to 30 minutes after the start of the irradiation treatment, there was no difference in the kinetics of inhibition (about 20 to 25% inhibition) between the different lengths of irradiation. Extension rate reached a minimum (65% inhibition) at about 85 minutes, after which growth acceleration toward the dark control rate was observed. Far-red reversibility of the rapid effect of red light on growth was not observed, even when far-red light was given only 4 seconds after the end of 10 seconds red light. Short (15 seconds) far-red light did not induce a response.

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Selected References

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

  1. Cosgrove D. J. Rapid Suppression of Growth by Blue Light: OCCURRENCE, TIME COURSE, AND GENERAL CHARACTERISTICS. Plant Physiol. 1981 Mar;67(3):584–590. doi: 10.1104/pp.67.3.584. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Lawson V. R., Weintraub R. L. Effects of red light on the growth of intact wheat and barley coleoptiles. Plant Physiol. 1975 Jul;56(1):44–50. doi: 10.1104/pp.56.1.44. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Mandoli D. F., Briggs W. R. Phytochrome control of two low-irradiance responses in etiolated oat seedlings. Plant Physiol. 1981 Apr;67(4):733–739. doi: 10.1104/pp.67.4.733. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Pike C. S., Richardson A. E., Weiss E. R., Aynardi J. M., Grushow J. Short term phytochrome control of oat coleoptile and pea epicotyl growth. Plant Physiol. 1979 Mar;63(3):440–443. doi: 10.1104/pp.63.3.440. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Vanderhoef L. N., Quail P. H., Briggs W. R. Red Light-inhibited Mesocotyl Elongation in Maize Seedlings: II. Kinetic and Spectral Studies. Plant Physiol. 1979 Jun;63(6):1062–1067. doi: 10.1104/pp.63.6.1062. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Warner T. J., Ross J. D., Coombs J. Phytochrome Control of Maize Coleoptile Section Elongation : A RAPID LOSS OF PHOTOREVERSIBILITY. Plant Physiol. 1981 Feb;67(2):355–357. doi: 10.1104/pp.67.2.355. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Warner T. J., Ross J. D. Phytochrome control of maize coleoptile section elongation: the role of cell wall extensibility. Plant Physiol. 1981 Nov;68(5):1024–1026. doi: 10.1104/pp.68.5.1024. [DOI] [PMC free article] [PubMed] [Google Scholar]

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