The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa

Simple item page
dc.contributor.authorLyall, Rafeen_ZA
dc.contributor.authorIngle, Robert Aen_ZA
dc.contributor.authorIlling, Nicolaen_ZA
dc.date.accessioned2015-11-10T14:48:40Z
dc.date.available2015-11-10T14:48:40Z
dc.date.issued2014en_ZA
dc.description.abstractResurrection plants are renowned for their vegetative desiccation tolerance (DT). While DT in vegetative tissues is rare in angiosperms, it is ubiquitous in mature orthodox seeds. During germination, seedlings gradually lose DT until they pass a point of no return, after which they can no longer survive dehydration. Here we investigate whether seedlings of the resurrection plant Xerophyta viscosa ever lose the capacity to establish DT. Seedlings from different stages of germination were dehydrated for 48 hours and assessed for their ability to recover upon rehydration. While a transient decline in the ability of X. viscosa seedlings to survive dehydration was observed, at no point during germination was the ability to re-establish DT completely lost in all seedlings. Pre-treatment of seedlings with PEG or sucrose reduced this transient decline, and improved the survival rate at all stages of germination. Additionally, we observed that the trait of poikilochlorophylly (or loss of chlorophyll) observed in adult X. viscosa leaves can be induced throughout seedling development. These results suggest that the window of DT seen in germinating orthodox seeds remains open in X. viscosa seedlings and that vegetative DT in Xerophyta species may have evolved from the ability to retain this program through to adulthood.en_ZA
dc.identifier.apacitationLyall, R., Ingle, R. A., & Illing, N. (2014). The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa. <i>PLoS One</i>, http://hdl.handle.net/11427/14836en_ZA
dc.identifier.chicagocitationLyall, Rafe, Robert A Ingle, and Nicola Illing "The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa." <i>PLoS One</i> (2014) http://hdl.handle.net/11427/14836en_ZA
dc.identifier.citationLyall, R., Ingle, R. A., & Illing, N. (2013). The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa. PloS one, 9(3), e93093. doi:10.1371/journal.pone.0093093en_ZA
dc.identifier.ris TY - Journal Article AU - Lyall, Rafe AU - Ingle, Robert A AU - Illing, Nicola AB - Resurrection plants are renowned for their vegetative desiccation tolerance (DT). While DT in vegetative tissues is rare in angiosperms, it is ubiquitous in mature orthodox seeds. During germination, seedlings gradually lose DT until they pass a point of no return, after which they can no longer survive dehydration. Here we investigate whether seedlings of the resurrection plant Xerophyta viscosa ever lose the capacity to establish DT. Seedlings from different stages of germination were dehydrated for 48 hours and assessed for their ability to recover upon rehydration. While a transient decline in the ability of X. viscosa seedlings to survive dehydration was observed, at no point during germination was the ability to re-establish DT completely lost in all seedlings. Pre-treatment of seedlings with PEG or sucrose reduced this transient decline, and improved the survival rate at all stages of germination. Additionally, we observed that the trait of poikilochlorophylly (or loss of chlorophyll) observed in adult X. viscosa leaves can be induced throughout seedling development. These results suggest that the window of DT seen in germinating orthodox seeds remains open in X. viscosa seedlings and that vegetative DT in Xerophyta species may have evolved from the ability to retain this program through to adulthood. DA - 2014 DB - OpenUCT DO - 10.1371/journal.pone.0093093 DP - University of Cape Town J1 - PLoS One LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa TI - The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa UR - http://hdl.handle.net/11427/14836 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/14836
dc.identifier.urihttp://dx.doi.org/10.1371/journal.pone.0093093
dc.identifier.vancouvercitationLyall R, Ingle RA, Illing N. The window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosa. PLoS One. 2014; http://hdl.handle.net/11427/14836.en_ZA
dc.language.isoengen_ZA
dc.publisherPublic Library of Scienceen_ZA
dc.publisher.departmentDepartment of Molecular and Cell Biologyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis is an open-access article distributed under the terms of the <a href=en_ZA
dc.rights.holder© 2014 Lyall et alen_ZA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0en_ZA
dc.sourcePLoS Oneen_ZA
dc.source.urihttp://journals.plos.org/plosoneen_ZA
dc.subject.otherChlorophyllen_ZA
dc.subject.otherCotyledons (botany)en_ZA
dc.subject.otherSeed germinationen_ZA
dc.subject.otherFlowering plantsen_ZA
dc.subject.otherArabidopsis thalianaen_ZA
dc.titleThe window of desiccation tolerance shown by early-stage germinating seedlings remains open in the resurrection plant, Xerophyta viscosaen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Lyall_Window_of_Desiccation_Tolerance_2014.pdf
Size:
963.89 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Journal Articles