| Cytokinesis in Coleochaete orbicularis (Charophyceae): an ancestral mechanism inherited by plants. | |
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MedLine Citation:
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PMID: 21653388 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Recently, highly vacuolate cells of Arabidopsis were shown to exhibit "polarized" cytokinesis, in which the phragmoplast and cell plate contact the mother cell wall and then progress from one side of the cell to the other, rather than forming uniformly outward from the cell center (Cutler and Ehrhardt, 2002, Proceedings of the National Academy of Sciences, USA 99: 2812-2817). It was not known if such a mechanism was unique to flowering plants or whether it occurred more broadly in the plant clade. To determine if a polar mechanism of cell division might have been characteristic of the first plants, differential interference contrast optics were used to examine living cells of the charophycean green alga Coleochaete orbicularis, a close relative of plants, with cytokinesis involving a phragmoplast. By recording images in different focal planes over time, such "polarized" cytokinesis was found in cells dividing either parallel or perpendicular to the edge of this radially symmetrical organism. Previously reported differences between these two types of division in Coleochaete were clarified. Polarized cytokinesis appears to be an ancestral mechanism of plant cell division inherited from the highly vacuolate cells of the charophycean algal ancestors of plants. |
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Authors:
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Martha E Cook |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American journal of botany Volume: 91 ISSN: 0002-9122 ISO Abbreviation: Am. J. Bot. Publication Date: 2004 Mar |
Date Detail:
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Created Date: 2011-06-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370467 Medline TA: Am J Bot Country: United States |
Other Details:
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Languages: eng Pagination: 313-20 Citation Subset: - |
Affiliation:
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Department of Biological Sciences, Illinois State University, Campus Box 4120, Normal, Illinois 61790-4120 USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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