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Identification of new adventitious rooting mutants amongst suppressors of the Arabidopsis thaliana superroot2 mutation
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj Napoca, Romania.
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj Napoca, Romania & Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden.
Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden & Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley WA 6009, Australia.
Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden & V.
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2014 (English)In: Journal of Experimental Botany, ISSN 0022-0957, E-ISSN 1460-2431, Vol. 65, no 6, 1605-1618 p.Article in journal (Refereed) Published
Abstract [en]

The plant hormone auxin plays a central role in adventitious rooting and is routinely used with many economically important, vegetatively propagated plant species to promote adventitious root initiation and development on cuttings. Nevertheless the molecular mechanisms through which it acts are only starting to emerge. The Arabidopsis superroot2-1 (sur2-1) mutant overproduces auxin and, as a consequence, develops excessive adventitious roots in the hypocotyl. In order to increase the knowledge of adventitious rooting and of auxin signalling pathways and crosstalk, this study performed a screen for suppressors of superroot2-1 phenotype. These suppressors provide a new resource for discovery of genetic players involved in auxin signalling pathways or at the crosstalk of auxin and other hormones or environmental signals. This study reports the identification and characterization of 26 sur2-1 suppressor mutants, several of which were identified as mutations in candidate genes involved in either auxin biosynthesis or signalling. In addition to confirming the role of auxin as a central regulator of adventitious rooting, superroot2 suppressors indicated possible crosstalk with ethylene signalling in this process.

Place, publisher, year, edition, pages
Oxford University Press, 2014. Vol. 65, no 6, 1605-1618 p.
National Category
Natural Sciences
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URN: urn:nbn:se:umu:diva-88641DOI: 10.1093/jxb/eru026PubMedID: 24596172OAI: oai:DiVA.org:umu-88641DiVA: diva2:716631
Available from: 2014-05-12 Created: 2014-05-12 Last updated: 2017-12-05Bibliographically approved

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Pacurar, Daniel IoanPacurar, Monica LacramioaraPop, Tiberia IoanaCavel, EmilieChaabouni, SalmaBellini, Catherine
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