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AuthorYe, Xiao-qidc.contributor.author
Date of accession2016-03-15T06:23:26Zdc.date.accessioned
Available in OPARU since2016-03-15T06:23:26Zdc.date.available
Year of creation2010dc.date.created
AbstractThe previous seasonal river flooding in the Three Gorges reservoir (TGR) region (Chongqing, China) occurs in summer. After the construction of TGR, high water table will be maintained in winter under low water temperature conditions and a low water table in summer. These contrasting flooding regimes are expected to influence flooding tolerance of the riparian plant species and consequently the vegetation. Salix variegata Franch. (shrub), Arundinella anomala Steud. (grass) and Althernanthera philoxeroides (Mart.) Griseb (clonal herb) can survive of complete submergence for several months. The hypothesis that long-term flooding tolerance is closely associated with maintaining carbohydrate level was tested. S. variegata and A. anomala plants survived 6 months of waterlogging without significant decrease of water soluble carbohydrate concentration compared with non-flooded plants. Complete submergence decreased carbohydrate level significantly, which continued with prolonged duration and finally death occurred after 4 to 6 months of inundation. A further two months of submergence with different water temperature (10°C, 20°C and 30°C) showed that at lower water temperature carbohydrate level was higher in both A. anomala and A. philoxeroides plants. Lower water temperature also resulted in lower survival rate in A. anomala plants and and faster recovery in A. philoxeroides plants. Carbohydrate concentration and survival in the recovery period was very similar in darkness-treated and submerged A. anomala plants. In A. philoxeroides plants, no significant differences of carbohydrate level were found between darkness-treated plants and submerged plants during the submergence period. These studies indicated that flooding tolerance can be partially explained on the basis of carbohydrate metabolism. Death from submergence could be caused by depletion of carbohydrate reserve. Lower water submergence can slow down carbohydrate utilization and increase plant flooding tolerance.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 01.10.2008)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v2dc.rights.uri
KeywordCarbohydrate concentrationdc.subject
KeywordFlooding tolerancedc.subject
KeywordThree Gorges: Chinadc.subject
Dewey Decimal GroupDDC 570 / Life sciencesdc.subject.ddc
LCSHRiparian plantsdc.subject.lcsh
TitleCarbohydrate concentration and tolerance in three riparian plant species from the Three Gorges Reservoir region exposed to long-term submergencedc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-1846dc.identifier.doi
PPN630900760dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-72932dc.identifier.urn
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
Date of activation2010-06-21T09:15:54Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 13.682; W: W-H 12.158uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS-ID7293uulm.vtsID
CategoryPublikationenuulm.category
University Bibliographyjauulm.unibibliographie


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