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Pit membranes of Ephedra resemble gymnosperms more than angiosperms

hal.structure.identifierAuburn University [AU]
dc.contributor.authorDUTE, Roland R.
hal.structure.identifierAuburn University [AU]
dc.contributor.authorBOWEN, Lauren A.
hal.structure.identifierAuburn University [AU]
dc.contributor.authorSCHIER, Sarah
hal.structure.identifierAuburn University [AU]
dc.contributor.authorVEVON, Alexa G.
hal.structure.identifierAuburn University [AU]
dc.contributor.authorBEST, Troy L.
hal.structure.identifierAuburn University [AU]
dc.contributor.authorAUAD, Maria
hal.structure.identifierUnited States Department of Agriculture [USDA]
dc.contributor.authorELDER, Thomas
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBOUCHE, Pauline
hal.structure.identifierInstitute for Systematic Botany and Ecology
dc.contributor.authorJANSEN, Steven
dc.date.issued2014
dc.identifier.issn0928-1541
dc.description.abstractEnBordered pit pairs of Ephedra species were characterized using different types of microscopy. Pit membranes contained tori that did not stain for lignin. SEM and AFM views of the torus surface showed no plasmodesmatal openings, but branched, secondary plasmodesmata were occasionally noted using TEM in conjunction with ultrathin sections. The margo consisted of radial microfibrils as well as finer diameter tangential fibrils. The former formed fascicles of fibrils that merged into even thicker buttresses during the act of pit membrane aspiration. AFM showed a discontinuous layer of non-microfibrillar material on the surface of both torus and margo. It is hypothesized that this material is responsible for adhesion of the pit membrane to the surface of the pit border during the process of aspiration. Taken as a whole, intervascular pit membranes of Ephedra more closely resemble those of conifers than those of torus-bearing pit membranes of angiosperms.
dc.language.isoen
dc.publisherBrill publishers
dc.title.enPit membranes of Ephedra resemble gymnosperms more than angiosperms
dc.typeArticle de revue
dc.identifier.doi10.1163/22941932-00000062
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalIAWA Journal
bordeaux.page217 – 235
bordeaux.volume35
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-02630816
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02630816v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=IAWA%20Journal&rft.date=2014&rft.volume=35&rft.issue=3&rft.spage=217%20%E2%80%93%20235&rft.epage=217%20%E2%80%93%20235&rft.eissn=0928-1541&rft.issn=0928-1541&rft.au=DUTE,%20Roland%20R.&BOWEN,%20Lauren%20A.&SCHIER,%20Sarah&VEVON,%20Alexa%20G.&BEST,%20Troy%20L.&rft.genre=article


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