| Position dependent control of cell fate in the Fucus embryo: role of intercellular communication. | |
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MedLine Citation:
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PMID: 9570765 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The early embryo of the brown alga Fucus comprises two cell types, i. e. rhizoid and thallus which are morphogically and cytologically distinguishable. Previous work has pointed to the cell wall as a source of position-dependent information required for polarisation and fate determination in the zygote and 2-celled embryo. In this study we have analysed the mechanism(s) of cell fate control and pattern formation at later embryonic stages using a combination of laser microsurgery and microinjection. The results indicate that the cell wall is required for maintenance of pre-existing polarity in isolated intact cells. However, all cell types ultimately have the capacity to re-differentiate or regenerate rhizoid cells in response to ablation of neighbouring cells. This regeneration is regulated in a position-dependent manner and is strongly influenced by intercellular communication, probably involving transport or diffusion of inhibitory signals which appear to be essential for regulation of cell fate decisions. This type of cell-to-cell communication does not involve symplastic transport or direct cell-cell contact inhibition. Apoplastic diffusible gradients appear to be involved in pattern formation in the multicellular embryo. |
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Authors:
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F Y Bouget; F Berger; C Brownlee |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Development (Cambridge, England) Volume: 125 ISSN: 0950-1991 ISO Abbreviation: Development Publication Date: 1998 Jun |
Date Detail:
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Created Date: 1998-07-14 Completed Date: 1998-07-14 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8701744 Medline TA: Development Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 1999-2008 Citation Subset: IM |
Affiliation:
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Marine Biological Association, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae, Brown
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growth & development* Body Patterning Cell Communication* Models, Biological Morphogenesis Plant Growth Regulators Regeneration Seeds |
| Chemical | |
Reg. No./Substance:
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0/Plant Growth Regulators |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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