Journal Article

<i>DFL2</i>, a New Member of the <i>Arabidopsis GH3</i> Gene Family, is Involved in Red Light-Specific Hypocotyl Elongation

Tomoyuki Takase, Miki Nakazawa, Akie Ishikawa, Katsushi Manabe and Minami Matsui

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 44, issue 10, pages 1071-1080
Published in print October 2003 | ISSN: 0032-0781
Published online October 2003 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcg130
DFL2, a New Member of the Arabidopsis GH3 Gene Family, is Involved in Red Light-Specific Hypocotyl Elongation

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

A new GH3-related gene, designated DFL2, causes a short hypocotyl phenotype when overexpressed under red and blue light and a long hypocotyl when antisensed under red light conditions. Higher expression of this gene was observed in continuous white, blue and far-red light but the expression level was low in red light and darkness. DFL2 gene expression was induced transiently with red light pulse treatment. DFL2 transgenic plants exhibited a normal root phenotype including primary root elongation and lateral root formation, although primary root elongation was inhibited in antisense transgenic plants only under red light. The adult phenotypes of sense and antisense transgenic plants were not different from that of wild type. DFL2 promoter activity was observed in the hypocotyl. Our results suggest that DFL2 is located downstream of red light signal transduction and determines the degree of hypocotyl elongation.

Keywords: Keywords: Arabidopsis — GH3 — Light signal transduction — Red light.; Abbreviations: cB, continuous blue; cFR, continuous far-red; cR, continuous red; cW, continuous white; GUS, β-glucronidase; phyA, phytochrome A; phyB, phytochrome B; phot, phototropin.

Journal Article.  6923 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.