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ZHOUPI and KERBEROS mediate embryo/endosperm separation by promoting the formation of an extracuticular sheath at the embryo surface

hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorMOUSSU, Steven
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorDOLL, Nicolas
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorCHAMOT, Sophy
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBROCARD, Lysiane
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorCREFF, Audrey
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorFOURQUIN, Chloé
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorWIDIEZ, Thomas
hal.structure.identifierDepartment of Biology
hal.structure.identifierCurriculum Genetic and Molecular Biology
dc.contributor.authorNIMCHUK, Zachary L.
hal.structure.identifierReproduction et développement des plantes [RDP]
dc.contributor.authorINGRAM, Gwyneth
dc.date.issued2017
dc.identifier.issn1040-4651
dc.description.abstractEnArabidopsis thaliana seed development requires the concomitant development of two zygotic compartments, the embryo and the endosperm. Following fertilization, the endosperm expands and the embryo grows invasively through the endosperm, which breaks down. Here, we describe a structure we refer to as the embryo sheath that forms on the surface of the embryo as it starts to elongate. The sheath is deposited outside the embryonic cuticle and incorporates endosperm-derived material rich in extensin-like molecules. Sheath production is dependent upon the activity of ZHOUPI, an endosperm-specific transcription factor necessary for endosperm degradation, embryo growth, embryo-endosperm separation, and normal embryo cuticle formation. We show that the peptide KERBEROS, whose expression is ZHOUPI dependent, is necessary both for the formation of a normal embryo sheath and for embryo-endosperm separation. Finally, we show that the receptor-like kinases GSO1 and GSO2 are required for sheath deposition at the embryo surface but not for production of sheath material in the endosperm. We present a model in which sheath formation depends on the coordinated production of material in the endosperm and signaling within the embryo, highlighting the complex molecular interaction between these two tissues during early seed development.
dc.language.isoen
dc.publisherAmerican Society of Plant Biologists (ASPB)
dc.subjectendosperme
dc.subjectsécrétion
dc.subjectembryon
dc.subjectarabidopsis thaliana
dc.subjectparoi cellulaire
dc.subject.enseed albumins
dc.subject.enembryo
dc.subject.encell wall
dc.title.enZHOUPI and KERBEROS mediate embryo/endosperm separation by promoting the formation of an extracuticular sheath at the embryo surface
dc.typeArticle de revue
dc.identifier.doi10.1105/tpc.17.00016
dc.subject.halSciences du Vivant [q-bio]
dc.description.sponsorshipEuropeInternational Mobility Programme to Strengthen Skills and Excellence in Research for Agriculture
bordeaux.journalThe Plant cell
bordeaux.page1642-1656
bordeaux.volume29
bordeaux.issue7
bordeaux.peerReviewedoui
hal.identifierhal-01605069
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01605069v1
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