Skip to main content
PMC home page
The Plant Cell logoLink to The Plant Cell
. 1991 Jul;3(7):685–694. doi: 10.1105/tpc.3.7.685

Arabidopsis Mutants Lacking Blue Light-Dependent Inhibition of Hypocotyl Elongation.

E Liscum 1, RP Hangarter 1
PMCID: PMC160036  PMID: 12324610

Abstract

We have isolated a new class of photomorphogenic mutants in Arabidopsis. Hypocotyl elongation is not inhibited in the mutant seedlings by continuous blue light but is inhibited by far red light, indicating that these mutations are phenotypically different from the previously isolated long hypocotyl (hy) mutants. Complementation analysis indicated that recessive nuclear mutations at three genetic loci, designated blu1, blu2, and blu3, can result in the blu mutant phenotype and that these mutants are genetically distinct from other long hypocotyl mutants. The BLU genes appear to be important only during seedling development because the blu mutations have little effect on mature plants, whereas hypocotyl elongation and cotyledon expansion are altered in seedlings. The genetic separation of the blue and far red sensitivities of light-induced hypocotyl inhibition in the blu and hy mutants demonstrates that two photosensory systems function in this response.

Full Text

The Full Text of this article is available as a PDF (1.3 MB).

Selected References

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

  1. Bleecker A. B., Estelle M. A., Somerville C., Kende H. Insensitivity to Ethylene Conferred by a Dominant Mutation in Arabidopsis thaliana. Science. 1988 Aug 26;241(4869):1086–1089. doi: 10.1126/science.241.4869.1086. [DOI] [PubMed] [Google Scholar]
  2. Checcucci A., Colombetti G., Ferrara R., Lenci F. Action spectra for photoaccumulation of green and colorless Euglena: evidence for identification of receptor pigments. Photochem Photobiol. 1976 Jan;23(1):51–54. doi: 10.1111/j.1751-1097.1976.tb06770.x. [DOI] [PubMed] [Google Scholar]
  3. Chory J., Peto C. A., Ashbaugh M., Saganich R., Pratt L., Ausubel F. Different Roles for Phytochrome in Etiolated and Green Plants Deduced from Characterization of Arabidopsis thaliana Mutants. Plant Cell. 1989 Sep;1(9):867–880. doi: 10.1105/tpc.1.9.867. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Chory J., Peto C., Feinbaum R., Pratt L., Ausubel F. Arabidopsis thaliana mutant that develops as a light-grown plant in the absence of light. Cell. 1989 Sep 8;58(5):991–999. doi: 10.1016/0092-8674(89)90950-1. [DOI] [PubMed] [Google Scholar]
  5. Feinbaum R. L., Ausubel F. M. Transcriptional regulation of the Arabidopsis thaliana chalcone synthase gene. Mol Cell Biol. 1988 May;8(5):1985–1992. doi: 10.1128/mcb.8.5.1985. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Gaba V., Black M., Attridge T. H. Photocontrol of Hypocotyl Elongation in De-Etiolated Cucumis sativus L. : Long Term, Fluence Rate-Dependent Responses to Blue Light. Plant Physiol. 1984 Apr;74(4):897–900. doi: 10.1104/pp.74.4.897. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Gallagher S., Short T. W., Ray P. M., Pratt L. H., Briggs W. R. Light-mediated changes in two proteins found associated with plasma membrane fractions from pea stem sections. Proc Natl Acad Sci U S A. 1988 Nov;85(21):8003–8007. doi: 10.1073/pnas.85.21.8003. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Khurana J. P., Poff K. L. Mutants of Arabidopsis thaliana with altered phototropism. Planta. 1989;178:400–406. [PubMed] [Google Scholar]
  9. Laskowski M. J., Briggs W. R. Regulation of pea epicotyl elongation by blue light : fluence-response relationships and growth distribution. Plant Physiol. 1989 Jan;89(1):293–298. doi: 10.1104/pp.89.1.293. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. McCourt P., Browse J., Watson J., Arntzen C. J., Somerville C. R. Analysis of Photosynthetic Antenna Function in a Mutant of Arabidopsis thaliana (L.) Lacking trans-Hexadecenoic Acid. Plant Physiol. 1985 Aug;78(4):853–858. doi: 10.1104/pp.78.4.853. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Olsen G. M., Mirza J. I., Maher E. P., Iversen T. H. Ultrastructure and movements of cell organelles in the root cap of agravitropic mutants and normal seedlings of Arabidopsis thaliana. Physiol Plant. 1984 Apr;60(4):523–531. doi: 10.1111/j.1399-3054.1984.tb04921.x. [DOI] [PubMed] [Google Scholar]
  12. Sargent M. L., Briggs W. R., Woodward D. O. Circadian nature of a rhythm expressed by an invertaseless strain of Neurospora crassa. Plant Physiol. 1966 Oct;41(8):1343–1349. doi: 10.1104/pp.41.8.1343. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Sharrock R. A., Quail P. H. Novel phytochrome sequences in Arabidopsis thaliana: structure, evolution, and differential expression of a plant regulatory photoreceptor family. Genes Dev. 1989 Nov;3(11):1745–1757. doi: 10.1101/gad.3.11.1745. [DOI] [PubMed] [Google Scholar]
  14. Short T. W., Briggs W. R. Characterization of a Rapid, Blue Light-Mediated Change in Detectable Phosphorylation of a Plasma Membrane Protein from Etiolated Pea (Pisum sativum L.) Seedlings. Plant Physiol. 1990 Jan;92(1):179–185. doi: 10.1104/pp.92.1.179. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Spalding E. P., Cosgrove D. J. Large plasma-membrane depolarization precedes rapid blue-light-induced growth inhibition in cucumber. Planta. 1989;178:407–410. [PubMed] [Google Scholar]
  16. Wilson A. K., Pickett F. B., Turner J. C., Estelle M. A dominant mutation in Arabidopsis confers resistance to auxin, ethylene and abscisic acid. Mol Gen Genet. 1990 Jul;222(2-3):377–383. doi: 10.1007/BF00633843. [DOI] [PubMed] [Google Scholar]

Articles from The Plant Cell are provided here courtesy of Oxford University Press

RESOURCES