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Plant and Cell Physiology Advance Access published online on November 28, 2006
Plant and Cell Physiology, doi:10.1093/pcp/pcl044
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© The Author 2006. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Evolutional processes during the formation of the plant-specific Dof transcription factor family

Mikao Shigyo, Nobumitsu Tabei, Tadakatsu Yoneyama and Shuichi Yanagisawa*

Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan

*Corresponding author: E-mail, asyanagi{at}mail.ecc.u-tokyo.ac.jp; Fax, +81-3-5841-8032.


  Abstract

We found 19 putative genes for plant-specific Dof transcription factors in the moss Physcomitrella patens and one Dof gene in the green alga Chlamydomonas reinhardtii but no identifiable Dof gene in the red alga Cyanidioschyzon merolae and the diatom Thalassiosira pseudonana, suggesting that the origin of the Dof transcription factors predates the divergence of the green algae and the ancestors of terrestrial plants. The phylogenetic analyses contended that the Dof family in angiosperms formed through a series of evolutional processes, including intensive duplications of a specific ancestral gene after the divergence of the moss and the angiosperm lineages.

Keywords: Dof factor - Transcription factor - Molecular evolution - moss - Chlamydomonas


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