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Plant and Cell Physiology, 2002, Vol. 43, No. 5 578-585
© 2002 Oxford University Press

Short Communications

Excision of Transposable Elements from the Chalcone Isomerase and Dihydroflavonol 4-Reductase Genes May Contribute to the Variegation of the Yellow-Flowered Carnation (Dianthus caryophyllus)

Yoshio Itoh1,3, Daisuke Higeta1, Akane Suzuki1, Hiroyuki Yoshida2 and Yoshihiro Ozeki1

1 Department of Biotechnology, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588 Japan 2 Japan Tobacco Inc. Applied Plant Research Center, 1900 Idei, Oyama, Tochigi, 323-0808 Japan

Abstract

In the ‘Rhapsody’ cultivar of the carnation, which bears white flowers variegated with red flecks and sectors, a transposable element, dTdic1, belonging to the Ac/Ds superfamily, was found within the dihydroflavonol 4-reductase (DFR) gene. The red flecks and sectors of ‘Rhapsody’ may be attributable to a reversion to DFR activity after the excision of dTdic1. The yellow color of the carnation petals is attributed to the synthesis and accumulation of chalcone 2'-glucoside. In several of the carnation cultivars that bear yellow flowers variegated with white flecks and sectors, both the chalcone isomerase (CHI) and DFR genes are disrupted by dTdic1.

Footnotes

3 Corresponding author: E-mail, yoss@cc.tuat.ac.jp; Fax, +81-42-388-7239.


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This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
S. Shimada, K. Takahashi, Y. Sato, and M. Sakuta
Dihydroflavonol 4-reductase cDNA from non-Anthocyanin-Producing Species in the Caryophyllales
Plant Cell Physiol., September 15, 2004; 45(9): 1290 - 1298.
[Abstract] [Full Text] [PDF]


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