Plant Physiology 96:985-989 (1991)
© 1991 American Society of Plant Biologists
Cellular and Structural Biology
Systemic Endopolyploidy in Arabidopsis thaliana 1
David W. Galbraith,
Kristi R. Harkins2 and
Steven Knapp
Department of Plant Sciences, University of Arizona, Tucson, Arizona 85721,
Department of Crop Science, Oregon State University, Corvallis, Oregon 97331-3002
Microfluorometric analysis of the nuclear DNA contents of the somatic tissues of Arabidopsis thaliana has revealed extensive endoreduplication, resulting in tissues that comprise mixtures of polyploid cells. Endoreduplication was found in all tissues except those of the inflorescences and was developmentally regulated according to the age of the tissues and their position within the plant.
2 Current address: Department of Biochemistry and Biophysics, Iowa State University, Ames, IA 50011.
1 Supported by the Arizona Agricultural Experiment Station (136253) and National Science Foundation DIR-8709697 (D. W. G.). Cell sorter purchased by Arizona Research Laboratories Biotechnology Program and U.S. Department of Energy DE-FG05-88ER75457 (D. W. G.).
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