Fruit fracture biomechanics and the release of Lepidium didymum pericarp-imposed mechanical dormancy by fungi

DC FieldValueLanguage
dc.contributor.authorSperber, Katja
dc.contributor.authorSteinbrecher, Tina
dc.contributor.authorGraeber, Kai
dc.contributor.authorScherer, Gwydion
dc.contributor.authorClausing, Simon
dc.contributor.authorWiegand, Nils
dc.contributor.authorHourston, James E.
dc.contributor.authorKurre, Rainer
dc.contributor.authorLeubner-Metzger, Gerhard
dc.contributor.authorMummenhoff, Klaus
dc.date.accessioned2021-12-23T16:12:17Z-
dc.date.available2021-12-23T16:12:17Z-
dc.date.issued2017
dc.identifier.issn20411723
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/10140-
dc.description.abstractThe biomechanical and ecophysiological properties of plant seed/fruit structures are fundamental to survival in distinct environments. Dispersal of fruits with hard pericarps ( fruit coats) encasing seeds has evolved many times independently within taxa that have seed dispersal as their default strategy. The mechanisms by which the constraint of a hard pericarp determines germination timing in response to the environment are currently unknown. Here, we show that the hard pericarp of Lepidium didymum controls germination solely by a biomechanical mechanism. Mechanical dormancy is conferred by preventing full phase-II water uptake of the encased non-dormant seed. The lignified endocarp has biomechanically and morphologically distinct regions that serve as predetermined breaking zones. This pericarp-imposed mechanical dormancy is released by the activity of common fungi, which weaken these zones by degrading non-lignified pericarp cells. We propose that the hard pericarp with this biomechanical mechanism contributed to the global distribution of this species in distinct environments.
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [MU137/8-2]; Biological Sciences Research Council (BBSRC)UK Research & Innovation (UKRI)Biotechnology and Biological Sciences Research Council (BBSRC) [BB/M000583/1]; Azotic Technology; BBSRCUK Research & Innovation (UKRI)Biotechnology and Biological Sciences Research Council (BBSRC) [BB/M000583/1] Funding Source: UKRI; We thank N. Scarlett, J.F. Castro, D. Zacharias, W. Grenzheuser for L. didymum seed samples, U.Coja for discussion and help with fungal identification, F.Przesdzink for technical assistance, G. Purschke and Hans-Peter Schmitz for critical discussions, and the Botanical Garden Osnabruck for help with seed propagation. We acknowledge the following agencies who support our work on Lepidium seed dormancy: Deutsche Forschungsgemeinschaft (DFG) to K.M. (MU137/8-2), and Biotechnology and Biological Sciences Research Council (BBSRC) to G. L.-M. and T.S. (BB/M000583/1). The support for the seed-microbe project by Azotic Technology to G. L.-M. and J.E.H. is gratefully acknowledged.
dc.language.isoen
dc.publisherNATURE PUBLISHING GROUP
dc.relation.ispartofNATURE COMMUNICATIONS
dc.subjectBRASSICACEAE
dc.subjectCELL-WALL
dc.subjectCLADOSPORIUM-SPHAEROSPERMUM
dc.subjectEVOLUTION
dc.subjectGENES
dc.subjectIMAGE-ANALYSIS
dc.subjectINDEHISCENT FRUITS
dc.subjectMultidisciplinary Sciences
dc.subjectScience & Technology - Other Topics
dc.subjectSEASONAL EMERGENCE
dc.subjectSEED-GERMINATION
dc.subjectSOIL
dc.titleFruit fracture biomechanics and the release of Lepidium didymum pericarp-imposed mechanical dormancy by fungi
dc.typejournal article
dc.identifier.doi10.1038/s41467-017-02051-9
dc.identifier.isiISI:000416895400010
dc.description.volume8
dc.contributor.orcid0000-0002-6045-8713
dc.contributor.orcid0000-0002-4183-8673
dc.contributor.orcid0000-0002-8449-1593
dc.contributor.orcid0000-0001-9246-5726
dc.contributor.researcheridA-1999-2013
dc.contributor.researcheridO-3915-2019
dc.publisher.placeMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
dcterms.isPartOf.abbreviationNat. Commun.
dcterms.oaStatusGreen Published, gold
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptidfb05-
crisitem.author.deptidfb05-
crisitem.author.orcid0000-0002-6872-6567-
crisitem.author.orcid0000-0002-8449-1593-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidKuRa617-
crisitem.author.netidMuKl919-
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