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dc.contributor.authorAlonso-Serra, Juanen
dc.contributor.authorShi, Xuepingen
dc.contributor.authorPeaucelle, Alexisen
dc.contributor.authorRastas, Pasien
dc.contributor.authorBourdon, Matthieuen
dc.contributor.authorImmanen, Juhaen
dc.contributor.authorTakahashi, Junkoen
dc.contributor.authorKoivula, Hannaen
dc.contributor.authorEswaran, Guganen
dc.contributor.authorMuranen, Sampoen
dc.contributor.authorHelp, Hannaen
dc.contributor.authorSmolander, Olli-Pekkaen
dc.contributor.authorSu, Changen
dc.contributor.authorSafronov, Omiden
dc.contributor.authorGerber, Lorenzen
dc.contributor.authorSalojärvi, Jarkkoen
dc.contributor.authorHagqvist, Ristoen
dc.contributor.authorMähönen, Ari Pekkaen
dc.contributor.authorHelariutta, Yrjoen
dc.contributor.authorNieminen, Kaisaen
dc.date.accessioned2019-12-11T00:30:21Z
dc.date.available2019-12-11T00:30:21Z
dc.date.issued2020-02en
dc.identifier.issn0960-9822
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/299680
dc.description.abstractTree architecture has evolved to support a top-heavy above-ground biomass, but this integral feature poses a weight-induced challenge to trunk stability. Maintaining an upright stem is expected to require vertical proprioception through feedback between sensing stem weight and responding with radial growth. Despite its apparent importance, the principle by which plant stems respond to vertical loading forces remains largely unknown. Here, by manipulating the stem weight of downy birch (Betula pubescens) trees, we show that cambial development is modulated systemically along the stem. We carried out a genetic study on the underlying regulation by combining an accelerated birch flowering program with a recessive mutation at the ELIMÄKI locus (EKI), which causes a mechanically defective response to weight stimulus resulting in stem collapse after just three months. We observed delayed wood morphogenesis in eki compared with WT, along with a more mechanically elastic cambial zone and radial compression of xylem cell size, indicating that rapid tissue differentiation is critical for cambial growth under mechanical stress. Furthermore, the touchinduced mechanosensory pathway was transcriptionally misregulated in eki, indicating that the ELIMÄKI locus is required to integrate the weight-growth feedback regulation. By studying this birch mutant, we were able to dissect vertical proprioception from the gravitropic response associated with reaction wood formation. Taken together, our study provides evidence for both local and systemic responses to mechanical stimuli during secondary plant development.
dc.description.sponsorshipThe Academy of Finland Finnish Centre of Excellence in Molecular Biology of Primary Producers (CoE 2014-2019) project (271832) and the project (286404); Gatsby Foundation (GAT3395/PR3); University of Helsinki (award 799992091); European Research Council Advanced Investigator Grant SYMDEV (323052)
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBetulaen
dc.subjectPlant Stemsen
dc.subjectTreesen
dc.subjectProprioceptionen
dc.subjectMutationen
dc.subjectGenes, Planten
dc.subjectCambiumen
dc.titleELIMÄKI Locus Is Required for Vertical Proprioceptive Response in Birch Trees.en
dc.typeArticle
prism.endingPage599.e5
prism.issueIdentifier4en
prism.publicationDate2020en
prism.publicationNameCurrent biology : CBen
prism.startingPage589
prism.volume30en
dc.identifier.doi10.17863/CAM.46750
dcterms.dateAccepted2019-12-05en
rioxxterms.versionofrecord10.1016/j.cub.2019.12.016en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-02en
dc.contributor.orcidAlonso-Serra, Juan [0000-0002-2810-4691]
dc.contributor.orcidRastas, Pasi [0000-0003-2768-1339]
dc.contributor.orcidKoivula, Hanna [0000-0002-9717-0465]
dc.contributor.orcidHelp, Hanna [0000-0003-2501-9851]
dc.contributor.orcidSmolander, Olli-Pekka [0000-0002-6795-7734]
dc.contributor.orcidSu, Chang [0000-0001-6600-2947]
dc.contributor.orcidSafronov, Omid [0000-0003-2044-3258]
dc.contributor.orcidMähönen, Ari Pekka [0000-0001-6051-866X]
dc.contributor.orcidHelariutta, Yrjo [0000-0002-7287-8459]
dc.identifier.eissn1879-0445
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEuropean Research Council (323052)
cam.orpheus.successMon Apr 27 07:58:24 BST 2020 - Embargo updated*
cam.orpheus.counter5*
rioxxterms.freetoread.startdate2021-02-28


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International