| OCTOPUS, a polarly localised membrane-associated protein, regulates phloem differentiation entry in Arabidopsis thaliana. | |
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MedLine Citation:
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PMID: 22395740 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Vascular development is embedded into the developmental context of plant organ differentiation and can be divided into the consecutive phases of vascular patterning and differentiation of specific vascular cell types (phloem and xylem). To date, only very few genetic determinants of phloem development are known. Here, we identify OCTOPUS (OPS) as a potentiator of phloem differentiation. OPS is a polarly localised membrane-associated protein that is initially expressed in provascular cells, and upon vascular cell type specification becomes restricted to the phloem cell lineage. OPS mutants display a reduction of cotyledon vascular pattern complexity and discontinuous phloem differentiation, whereas OPS overexpressers show accelerated progress of cotyledon vascular patterning and phloem differentiation. We propose that OPS participates in vascular differentiation by interpreting longitudinal signals that lead to the transformation of vascular initials into differentiating protophloem cells. |
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Authors:
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Elisabeth Truernit; Hélène Bauby; Katia Belcram; Julien Barthélémy; Jean-Christophe Palauqui |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Development (Cambridge, England) Volume: 139 ISSN: 1477-9129 ISO Abbreviation: Development Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-03-07 Completed Date: - Revised Date: - |
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: 1306-15 Citation Subset: IM |
Affiliation:
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INRA, UMR1318, Institut Jean-Pierre Bourgin, RD10, 78000 Versailles, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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