caa a22 4500 605480575 CHVBK 20210128100416.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s11099-015-0088-3 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0088-3 Morphological, physiological, and biochemical responses of Populus euphratica to soil flooding [Elektronische Daten] [B. Yu, C. Zhao, J. Li, J. Li, G. Peng] The riparian forests along the Tarim River, habitats for Populus euphratica establishment, are subjected to frequent flooding. To elucidate adaptive strategies that enable this species to occupy the riparian ecosystem subjected to seasonal or permanent water-logging, we examined functional characteristics of plant growth, xylem water relations, leaf gas exchange, chlorophyll (Chl) content and fluorescence, soluble sugar and malondialdehyde (MDA) content in P. euphratica seedlings flooded for 50 d. Although flooded seedlings kept absorbing carbon throughout the experiment, their shoot and root growth rates were lower than in non-flooded seedlings. The reduced leaf gas exchange and quantum efficiency of PSII of flooded seedlings resulted possibly from the reduction in total Chl content. Content of soluble sugar and malondialdehyde in leaves were higher in flooded than in control seedlings. Soil flooding induced hypertrophy of lenticels and increased a stem diameter. These responses were responsible for species survival as well as its success in this seasonally flooded riparian zone. Our results indicate that P. euphratica is relatively flood-tolerant due to a combination of morphological, physiological, and biochemical adjustments, which may support its dominance in the Tarim riparian forest. The Institute of Experimental Botany, 2015 chlorophyll fluorescence nationallicence flooding tolerance nationallicence leaf soluble sugar nationallicence poplar nationallicence C i : intercellular CO2 concentration nationallicence Chl : chlorophyll nationallicence E : transpiration rate nationallicence Fm : maximal fluorescence in dark adapted state nationallicence Fm′ : maximal fluorescence in light-adapted state nationallicence Fs : steady-state fluorescence yield nationallicence Fv/Fm : maximal quantum yield of PSII photochemistry nationallicence Fv′/Fm′ : energy harvesting efficiency of PSII nationallicence F0 : minimal fluorescence in dark-adapted state nationallicence F0′ : minimal fluorescence in light-adapted state nationallicence FM : fresh mass nationallicence g s : stomatal conductance nationallicence MDA : malondialdehyde nationallicence P N : net photosynthetic rate nationallicence qP : photochemical quenching coefficient nationallicence ΦPSII : effective quantum yield of PSII photochemistry nationallicence Ψmd : midday xylem water potential nationallicence Yu B. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut Zhao C. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut Li J. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut Peng G. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/1(2015-03-01), 110-117 0300-3604 53:1<110 2015 53 11099 https://doi.org/10.1007/s11099-015-0088-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11099-015-0088-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu B. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut NATIONALLICENCE 700 1- Zhao C. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut NATIONALLICENCE 700 1- Li J. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut NATIONALLICENCE 700 1- Peng G. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, Urumqi, China aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/1(2015-03-01), 110-117 0300-3604 53:1<110 2015 53 11099