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Mutations in the gene for the red/far-red light receptor phytochrome B alter cell elongation and physiological responses throughout Arabidopsis development

Academic Article
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Overview

authors

  • Reed, J. W.
  • Nagpal, P.
  • Poole, D. S.
  • Furuya, M.
  • Chory, Joanne

publication date

  • February 1993

journal

  • Plant Cell  Journal

abstract

  • Phytochromes are a family of plant photoreceptors that mediate physiological and developmental responses to changes in red and far-red light conditions. In Arabidopsis, there are genes for at least five phytochrome proteins. These photoreceptors control such responses as germination, stem elongation, flowering, gene expression, and chloroplast and leaf development. However, it is not known which red light responses are controlled by which phytochrome species, or whether the different phytochromes have overlapping functions. We report here that previously described hy3 mutants have mutations in the gene coding for phytochrome B (PhyB). These are the first mutations shown to lie in a plant photoreceptor gene. A number of tissues are abnormally elongated in the hy3(phyB) mutants, including hypocotyls, stems, petioles, and root hairs. In addition, the mutants flower earlier than the wild type, and they accumulate less chlorophyll. PhyB thus controls Arabidopsis development at numerous stages and in multiple tissues.

subject areas

  • Amino Acid Sequence
  • Arabidopsis
  • Base Sequence
  • Cloning, Molecular
  • DNA
  • DNA Mutational Analysis
  • Gene Expression
  • Light
  • Molecular Sequence Data
  • Phenotype
  • Phytochrome
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Identity

PubMed Central ID

  • PMC160258

International Standard Serial Number (ISSN)

  • 1040-4651

Digital Object Identifier (DOI)

  • 10.1105/tpc.5.2.147

PubMed ID

  • 8453299
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Additional Document Info

start page

  • 147

end page

  • 157

volume

  • 5

issue

  • 2

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