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ABCG9, ABCG11 and ABCG14 ABC transporters are required for vascular development in Arabidopsis
Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC). Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Swedish University of Agricultural Sciences, Umeå and AgroParisTech, Versailles Cedex, France.
Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC). Umeå University, Faculty of Science and Technology, Department of Plant Physiology.
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2013 (English)In: The Plant Journal, ISSN 0960-7412, E-ISSN 1365-313X, Vol. 76, no 5, 811-824 p.Article in journal (Refereed) Published
Abstract [en]

In order to obtain insights into the regulatory pathways controlling phloem development, we characterized three genes encoding membrane proteins from the G sub-family of ABC transporters (ABCG9, ABCG11 and ABCG14), whose expression in the phloem has been confirmed. Mutations in the genes encoding these dimerizing half transporters' are semi-dominant and result in vascular patterning defects in cotyledons and the floral stem. Co-immunoprecipitation and bimolecular fluorescence complementation experiments demonstrated that these proteins dimerize, either by flexible pairing (ABCG11 and ABCG9) or by forming strict heterodimers (ABCG14). In addition, metabolome analyses and measurement of sterol ester contents in the mutants suggested that ABCG9, ABCG11 and ABCG14 are involved in lipid/sterol homeostasis regulation. Our results show that these three ABCG genes are required for proper vascular development in Arabidopsis thaliana.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2013. Vol. 76, no 5, 811-824 p.
Keyword [en]
vascular development, ABC transporters, ABCG dimer, lipid, sterol homeostasis, Arabidopsis thaliana
National Category
Botany
Identifiers
URN: urn:nbn:se:umu:diva-85557DOI: 10.1111/tpj.12334ISI: 000327511600008OAI: oai:DiVA.org:umu-85557DiVA: diva2:694721
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research Knut and Alice Wallenberg FoundationCarl Tryggers foundation
Available from: 2014-02-07 Created: 2014-02-06 Last updated: 2017-12-06Bibliographically approved

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Le Hir, RozennSorin, ClementBako, LaszloBellini, Catherine
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CiteExportLink to record
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Citation style
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