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dc.contributor.authorWhite, AC
dc.contributor.authorColmer, TD
dc.contributor.authorCawthray, GR
dc.contributor.authorHanley, ME
dc.date.accessioned2016-03-23T15:43:03Z
dc.date.available2016-03-23T15:43:03Z
dc.date.issued2014-08
dc.identifier.issn0305-7364
dc.identifier.issn1095-8290
dc.identifier.urihttp://hdl.handle.net/10026.1/4399
dc.description.abstract

BACKGROUND AND AIMS: Despite concerns about the impact of rising sea levels and storm surge events on coastal ecosystems, there is remarkably little information on the response of terrestrial coastal plant species to seawater inundation. The aim of this study was to elucidate responses of a glycophyte (white clover, Trifolium repens) to short-duration soil flooding by seawater and recovery following leaching of salts. METHODS: Using plants cultivated from parent ecotypes collected from a natural soil salinity gradient, the impact of short-duration seawater soil flooding (8 or 24 h) on short-term changes in leaf salt ion and organic solute concentrations was examined, together with longer term impacts on plant growth (stolon elongation) and flowering. KEY RESULTS: There was substantial Cl(-) and Na(+) accumulation in leaves, especially for plants subjected to 24 h soil flooding with seawater, but no consistent variation linked to parent plant provenance. Proline and sucrose concentrations also increased in plants following seawater flooding of the soil. Plant growth and flowering were reduced by longer soil immersion times (seawater flooding followed by drainage and freshwater inputs), but plants originating from more saline soil responded less negatively than those from lower salinity soil. CONCLUSIONS: The accumulation of proline and sucrose indicates a potential for solute accumulation as a response to the osmotic imbalance caused by salt ions, while variation in growth and flowering responses between ecotypes points to a natural adaptive capacity for tolerance of short-duration seawater soil flooding in T. repens. Consequently, it is suggested that selection for tolerant ecotypes is possible should the predicted increase in frequency of storm surge flooding events occur.

dc.format.extent347-355
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoeng
dc.publisherOxford University Press (OUP)
dc.subjectClimate change
dc.subjectflooding
dc.subjectglycophyte
dc.subjectosmotic stress
dc.subjectsalinity
dc.subjectsaline soil waterlogging
dc.subjectsalt ions
dc.subjectsea level rise
dc.subjectstress metabolites
dc.subjectstorm surge
dc.subjectTrifolium repens
dc.subjectwhite clover
dc.titleVariable response of three Trifolium repens ecotypes to soil flooding by seawater
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/24942000
plymouth.issue2
plymouth.volume114
plymouth.publisher-urlhttp://dx.doi.org/10.1093/aob/mcu118
plymouth.publication-statusPublished
plymouth.journalAnnals of Botany
dc.identifier.doi10.1093/aob/mcu118
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA06 Agriculture, Veterinary and Food Science
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.publisher.placeEngland
dc.identifier.eissn1095-8290
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1093/aob/mcu118
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review


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