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000005786 084__ $$2WoS$$aPlant Sciences
000005786 1001_ $$0P:(DE-Juel1)VDB65296$$aLuo, F.-L.$$b0$$uFZJ
000005786 245__ $$aPhotosynthetic acclimation is important for post-submergence recovery of photosynthesis and growth in two riparian species
000005786 260__ $$aOxford$$bOxford University Press$$c2009
000005786 300__ $$a1435 - 1444
000005786 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000005786 440_0 $$013861$$aAnnals of Botany$$v104$$x0305-7364$$y7
000005786 500__ $$aF.-L. L. was supported by a PhD scholarship from the Deutsche Akademische Austausch Dienst. We thank Beate Uhlig (Institut fur Phytosphare, Forschungszentrum Julich GmbH) for help with plant cultivation and harvesting. Two anonymous referees and the Handling Editor (Tim Colmer) provided valuable comments.
000005786 520__ $$aConcomitant increases in O(2) and irradiance upon de-submergence can cause photoinhibition and photo-oxidative damage to the photosynthetic apparatus of plants. As energy and carbohydrate supply from photosynthesis is needed for growth, it was hypothesized that post-submergence growth recovery may require efficient photosynthetic acclimation to increased O(2) and irradiance to minimize photo-oxidative damage. The hypothesis was tested in two flood-tolerant species: a C(3) herb, Alternanthera philoxeroides; and a C(4) grass, Hemarthria altissima. The impact of low O(2) and low light, typical conditions in turbid floodwater, on post-submergence recovery was assessed by different flooding treatments combined with shading.Experiments were conducted during 30 d of flooding (waterlogging or submergence) with or without shading and subsequent recovery of 20 d under growth conditions. Changes in dry mass, number of branches/tillers, and length of the longest internodes and main stems were recorded to characterize growth responses. Photosynthetic parameters (photosystem II efficiency and non-photochemical quenching) were determined in mature leaves based on chlorophyll a fluorescence measurements.In both species growth and photosynthesis recovered after the end of the submergence treatment, with recovery of photosynthesis (starting shortly after de-submergence) preceding recovery of growth (pronounced on days 40-50). The effective quantum yield of photosystem II and non-photochemical quenching were diminished during submergence but rapidly increased upon de-submergence. Similar changes were found in all shaded plants, with or without flooding. Submerged plants did not suffer from photoinhibition throughout the recovery period although their growth recovery was retarded.After sudden de-submergence the C(3) plant A. philoxeroides and the C(4) plant H. altissima were both able to maintain the functionality of the photosynthetic apparatus through rapid acclimation to changing O(2) and light conditions. The ability for photosynthetic acclimation may be essential for adaptation to wetland habitats in which water levels fluctuate.
000005786 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000005786 588__ $$aDataset connected to Web of Science, Pubmed
000005786 650_2 $$2MeSH$$aAcclimatization
000005786 650_2 $$2MeSH$$aAmaranthaceae: anatomy & histology
000005786 650_2 $$2MeSH$$aAmaranthaceae: physiology
000005786 650_2 $$2MeSH$$aFloods
000005786 650_2 $$2MeSH$$aLight
000005786 650_2 $$2MeSH$$aOxygen: physiology
000005786 650_2 $$2MeSH$$aPhotosynthesis
000005786 650_2 $$2MeSH$$aPlant Roots: anatomy & histology
000005786 650_2 $$2MeSH$$aPlant Shoots: anatomy & histology
000005786 650_2 $$2MeSH$$aPoaceae: anatomy & histology
000005786 650_2 $$2MeSH$$aPoaceae: physiology
000005786 650_2 $$2MeSH$$aWater: physiology
000005786 650_7 $$07732-18-5$$2NLM Chemicals$$aWater
000005786 650_7 $$07782-44-7$$2NLM Chemicals$$aOxygen
000005786 650_7 $$2WoSType$$aJ
000005786 65320 $$2Author$$aAerenchyma
000005786 65320 $$2Author$$aAlternanthera philoxeroides
000005786 65320 $$2Author$$aflooding
000005786 65320 $$2Author$$agrowth
000005786 65320 $$2Author$$aHemarthria altissima
000005786 65320 $$2Author$$alow light
000005786 65320 $$2Author$$aphotosynthesis
000005786 65320 $$2Author$$ashade
000005786 65320 $$2Author$$asubmergence
000005786 65320 $$2Author$$awaterlogging
000005786 65320 $$2Author$$awetland plant
000005786 7001_ $$0P:(DE-Juel1)129373$$aNagel, K. A.$$b1$$uFZJ
000005786 7001_ $$0P:(DE-Juel1)VDB63879$$aZeng, B.$$b2$$uFZJ
000005786 7001_ $$0P:(DE-Juel1)129402$$aSchurr, U.$$b3$$uFZJ
000005786 7001_ $$0P:(DE-Juel1)129358$$aMatsubara, S.$$b4$$uFZJ
000005786 773__ $$0PERI:(DE-600)1461328-1$$a10.1093/aob/mcp257$$gVol. 104, p. 1435 - 1444$$p1435 - 1444$$q104<1435 - 1444$$tAnnals of botany$$v104$$x0305-7364$$y2009
000005786 8567_ $$2Pubmed Central$$uhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2778401
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