Abstract
Screening by chlorophyll (Chl) affects photoconversion rates and photoequilibrium ratios of phytochrome in vivo and may cause distortion of the action spectra of photomorphogenesis (N Kazarinova-Fukshansky, M Seyfried, E Schäfer 1985 Photochem Photobiol 41: 689-702). Inhibitors that reduce the Chl content of seedlings are sometimes used in photomorphogenesis research to decrease the effects of Chl screening on the state of phytochrome in vivo. Streptomycin is one of the inhibitors that can be used for this purpose. The effects of streptomycin on phytochrome-mediated anthocyanin accumulation in young seedlings are significantly different in closely related systems. The use of `Chl-bleachers' in photomorphogenesis studies may produce undesirable side effects. At the level of the expression of a photoregulated response, the effects of differences in the state of phytochrome between water-grown Chl-rich and inhibitor-treated Chl-poor seedlings may be difficult to evaluate because they may be masked by the effects of the inhibitor on the response.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Beggs C. J., Holmes M. G., Jabben M., Schäfer E. Action Spectra for the Inhibition of Hypocotyl Growth by Continuous Irradiation in Light and Dark-Grown Sinapis alba L. Seedlings. Plant Physiol. 1980 Oct;66(4):615–618. doi: 10.1104/pp.66.4.615. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jabben M., Deitzer G. F. Effects of the herbicide san 9789 on photomorphogenic responses. Plant Physiol. 1979 Mar;63(3):481–485. doi: 10.1104/pp.63.3.481. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mancinelli A. L. Photoregulation of Anthocyanin Synthesis : VIII. Effect of Light Pretreatments. Plant Physiol. 1984 Jun;75(2):447–453. doi: 10.1104/pp.75.2.447. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mancinelli A. L., Walsh L. Photocontrol of Anthocyanin Synthesis: VII. Factors Affecting the Spectral Sensitivity of Anthocyanin Synthesis in Young Seedlings. Plant Physiol. 1979 May;63(5):841–846. doi: 10.1104/pp.63.5.841. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mancinelli A. L., Yang C. P., Rabino I., Kuzmanoff K. M. Photocontrol of Anthocyanin Synthesis: V. Further Evidence against the Involvement of Photosynthesis in High Irradiance Reaction Anthocyanin Synthesis of Young Seedlings. Plant Physiol. 1976 Aug;58(2):214–217. doi: 10.1104/pp.58.2.214. [DOI] [PMC free article] [PubMed] [Google Scholar]