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The patterning of epidermal hairs in Arabidopsis: updated
Umeå University, Faculty of Science and Technology, Department of Plant Physiology.ORCID iD: 0000-0001-7571-0670
2012 (English)In: Current opinion in plant biology, ISSN 1369-5266, E-ISSN 1879-0356, Vol. 15, no 1, 31-37 p.Article, review/survey (Refereed) Published
Abstract [en]

Epidermal hairs of Arabidopsis thaliana emerge in regular spacing patterns providing excellent model systems for studies of biological pattern formation. A number of root-hair and leaf-trichome patterning mutants and tools for cell-specific and tissue-specific manipulation of patterning protein activities have been combined in cycles of experimentation and mathematical modelling. These approaches have provided insight into molecular mechanisms of epidermal patterning. During the last two years, endoreplication has, unexpectedly, been found to control cell-fate maintenance during trichome patterning. New genetic interactions between a downstream, positive transcriptional regulator and lateral inhibitors of trichome or non-root-hair fate specification have been uncovered. A lateral inhibitor and a new positive regulator have been identified as major loci affecting trichome patterning in natural Arabidopsis populations. Finally, factors that modify root-hair patterning from the underlying cell layer have been discovered.

Place, publisher, year, edition, pages
2012. Vol. 15, no 1, 31-37 p.
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URN: urn:nbn:se:umu:diva-53399DOI: 10.1016/j.pbi.2011.10.010ISI: 000300813000006OAI: diva2:511801
EU, European Research Council, ERC-StG-2010-260699
Available from: 2012-03-23 Created: 2012-03-23 Last updated: 2015-05-07Bibliographically approved

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