Anomalous pressure volume curves of resurrection plants do not suggest negative turgor.

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dc.contributor.authorWilligen, Clare Vander
dc.contributor.authorFarrant, Jill
dc.contributor.authorPammenter, N W
dc.date.accessioned2016-08-02T14:08:50Z
dc.date.available2016-08-02T14:08:50Z
dc.date.issued2001
dc.date.updated2016-08-02T09:23:29Z
dc.description.abstractPressure-volume (PV) curves of the desiccation-tolerant angiosperms, Eragrostis nindensis, Craterostigma wilmsii and Xerophyta humilis, and the desiccation-sensitive species, E. curvula, were compared. The shape of curves for E. nindensis and C. wilmsii differed from the usual curvilinear form. Over the relative water content (RWC) range of approx. 70 to 25%, PV curves indicated water potentials higher than directly measured water activity on frozen-thawed tissue. Anatomical studies showed considerable cell wall folding and a consequent reduction in cell volume in these two species; this was not seen in X. humilis or E. curvula which showed normal PV curves. It is suggested that this wall folding may have prevented the development of negative turgor and physical stress in the cells, and contributed to desiccation tolerance. Copyright 2001 Annals of Botany Company.en_ZA
dc.identifierhttp://dx.doi.org/10.1006/anbo.2001.1499
dc.identifier.apacitationWilligen, C. V., Farrant, J., & Pammenter, N. W. (2001). Anomalous pressure volume curves of resurrection plants do not suggest negative turgor. <i>Annals of Botany</i>, http://hdl.handle.net/11427/21104en_ZA
dc.identifier.chicagocitationWilligen, Clare Vander, Jill Farrant, and N W Pammenter "Anomalous pressure volume curves of resurrection plants do not suggest negative turgor." <i>Annals of Botany</i> (2001) http://hdl.handle.net/11427/21104en_ZA
dc.identifier.citationVander Willigen, C., Farrant, J. M., & Pammenter, N. W. (2001). Anomalous pressure volume curves of resurrection plants do not suggest negative turgor. Annals of Botany, 88(4), 537-543.en_ZA
dc.identifier.issn0305-7364en_ZA
dc.identifier.ris TY - Journal Article AU - Willigen, Clare Vander AU - Farrant, Jill AU - Pammenter, N W AB - Pressure-volume (PV) curves of the desiccation-tolerant angiosperms, Eragrostis nindensis, Craterostigma wilmsii and Xerophyta humilis, and the desiccation-sensitive species, E. curvula, were compared. The shape of curves for E. nindensis and C. wilmsii differed from the usual curvilinear form. Over the relative water content (RWC) range of approx. 70 to 25%, PV curves indicated water potentials higher than directly measured water activity on frozen-thawed tissue. Anatomical studies showed considerable cell wall folding and a consequent reduction in cell volume in these two species; this was not seen in X. humilis or E. curvula which showed normal PV curves. It is suggested that this wall folding may have prevented the development of negative turgor and physical stress in the cells, and contributed to desiccation tolerance. Copyright 2001 Annals of Botany Company. DA - 2001 DB - OpenUCT DP - University of Cape Town J1 - Annals of Botany LK - https://open.uct.ac.za PB - University of Cape Town PY - 2001 SM - 0305-7364 T1 - Anomalous pressure volume curves of resurrection plants do not suggest negative turgor TI - Anomalous pressure volume curves of resurrection plants do not suggest negative turgor UR - http://hdl.handle.net/11427/21104 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21104
dc.identifier.vancouvercitationWilligen CV, Farrant J, Pammenter NW. Anomalous pressure volume curves of resurrection plants do not suggest negative turgor. Annals of Botany. 2001; http://hdl.handle.net/11427/21104.en_ZA
dc.languageengen_ZA
dc.publisherOxford University Pressen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceAnnals of Botanyen_ZA
dc.source.urihttp://aob.oxfordjournals.org/
dc.subject.otherNegative turgor
dc.subject.otherCraterostigma
dc.subject.otherEragrostis
dc.subject.otherXerophyta
dc.subject.otherpsychrometry
dc.titleAnomalous pressure volume curves of resurrection plants do not suggest negative turgor.en_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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