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TSO1 functions in cell division during Arabidopsis flower development

Liu, Zhongchi and Running, Mark P. and Meyerowitz, Elliot M. (1997) TSO1 functions in cell division during Arabidopsis flower development. Development, 124 (3). pp. 665-672. ISSN 0950-1991. http://resolver.caltech.edu/CaltechAUTHORS:LIUdev97

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Abstract

We describe an Arabidopsis mutant, tso1, which develops callus-like tissues in place of floral organs. The tso1 floral meristem lacks properly organized three cell layers, and the nuclei of these cells are irregular in size and shape. Further analyses reveal partially formed cell walls and increased DNA ploidy in tso1 floral meristem cells, indicating defects in mitosis and cytokinesis. Our finding that TSO1 is required for organ formation in floral tissues but not in other tissues indicates that TSO1 may encode a floral-specific cell division component, or that TSO1 function is redundant in nonfloral tissues.


Item Type:Article
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URLURL TypeDescription
http://dev.biologists.org/cgi/content/abstract/124/3/665PublisherUNSPECIFIED
Additional Information:Copyright © 1997 by Company of Biologists. (Accepted 29 November 1996) We thank Patrick Koen and Jean Edens for their assistance in TEM, Joshua Levin for the tso1-2 allele, William Friedman for advice on microscopic spectrophotometric measurements and the use of his facilities, Glen Turner, Michael Chu and Mintao Fan for contributions to double mutant construction, confocal microscopy and mapping respectively. We also thank Eric Baehrecke and members of the Meyerowitz lab for critical reading of the manuscript. Z.L. was a DOE-energy Biosciences Research Fellow of the Life Science Research Foundation, and was previously a post-doctoral fellow of Damon Runyon-Walter Winchell Cancer Research Fund. M.P.R. was a Howard Hughes predoctoral fellow. This work was supported by NIH grant GM 45697 to E.M.M.
Funders:
Funding AgencyGrant Number
Department of EnergyUNSPECIFIED
Damon Runyon-Walter Winchell Cancer Research FoundationUNSPECIFIED
Howard Hughes Medical InstituteUNSPECIFIED
National Institutes of HealthGM 45697
Subject Keywords:tso1, mitosis, cytokinesis, floral meristem
Record Number:CaltechAUTHORS:LIUdev97
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LIUdev97
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13021
Collection:CaltechAUTHORS
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Deposited On:15 Jan 2009 22:07
Last Modified:26 Dec 2012 10:43

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