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Plant Cell, Vol. 11, 1827-1840, October 1999, Copyright © 1999, American Society of Plant Physiologists
Function Search in a Large Transcription Factor Gene Family in Arabidopsis: Assessing the Potential of Reverse Genetics to Identify Insertional Mutations in R2R3 MYB Genes
Ruth C. Meissnera,
Hailing Jinb,
Eleonora Cominellic,
Marten Denekampd,
Antonio Fuertese,
Raffaella Grecoc,
Harald D. Kranzf,
Steven Penfielda,
Katia Petronic,
Ana Urzainquie,
Cathie Martinb,
Javier Paz-Arese,
Sjef Smeekensd,
Chiara Tonellic,
Bernd Weisshaarf,
Elvira Baumanng,
Victor Klimyukh,
Sylvestre Marillonneth,
Kanu Patelh,
Elly Speulmani,
Alain F. Tissierh,
David Bouchezj,
Jonathan J. D. Jonesh,
Andy Pereirai,
Ellen Wismang, and
Michael Bevana
a John Innes Centre, Department of Molecular Genetics, Colney Lane, Norwich Research Park, Norwich NR4 7UH, United Kingdom
b John Innes Centre, Genetics Department, Colney Lane, Norwich Research Park, Norwich NR4 7UH, United Kingdom
c Dipartimento di Genetica e di Biologia dei Microrganismi, Universita degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
d Department of Molecular Cell Biology, University of Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands
e Centro Nacional de BiotecnologiaConsejo Superior de Investigaciones, Campus de Cantoblanco, 28049 Madrid, Spain
f Max-Planck Institut für Züchtungsforschung, Abteilung Biochemie, Carl-von-Linne-Weg 10, 50829 Köln, Germany
g Max-Planck Institut für Züchtungsforschung, Abteilung Saedler, Carl-von-Linne-Weg 10, 50829 Köln, Germany
h John Innes Centre, Sainsbury Laboratory, Colney Lane, Norwich Research Park, Norwich NR4 7UH, United Kingdom
i CPRO-DLO, Department of Molecular Biology, Droevendaalsesteeg 1, 6700 AA Wageningen, The Netherlands
j Institut National de la Recherche Agronomique, Centre de Versailles, Laboratoire de Biologie Cellulaire, Route de Saint-Cyr, 78026 Versailles Cedex, France
Correspondence to:
Michael Bevan, bevan{at}bbsrc.ac.uk (E-mail), 44-1603-505725 (fax)
More than 92 genes encoding MYB transcription factors of the R2R3 class have been described in Arabidopsis. The functions of a few members of this large gene family have been described, indicating important roles for R2R3 MYB transcription factors in the regulation of secondary metabolism, cell shape, and disease resistance, and in responses to growth regulators and stresses. For the majority of the genes in this family, however, little functional information is available. As the first step to characterizing these genes functionally, the sequences of >90 family members, and the map positions and expression profiles of >60 members, have been determined previously. An important second step in the functional analysis of the MYB family, through a process of reverse genetics that entails the isolation of insertion mutants, is described here. For this purpose, a variety of gene disruption resources has been used, including T-DNAinsertion populations and three distinct populations that harbor transposon insertions. We report the isolation of 47 insertions into 36 distinct MYB genes by screening a total of 73 genes. These defined insertion lines will provide the foundation for subsequent detailed functional analyses for the assignment of specific functions to individual members of the R2R3 MYB gene family.
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