caa a22 4500 463191579 CHVBK 20180406164910.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10973-007-8510-0 doi (NATIONALLICENCE)springer-10.1007/s10973-007-8510-0 Effects of ytterbium ion on the growth, metabolism and membrane fluidity of Tetrahymena thermophila [Elektronische Daten] [X. Chen, W. Feng, W. Miao, Y. Shen, Y. Yu] Power-time curves and metabolic properties of Tetrahymena thermophila BF5 exposed to different Yb3+ levels were studied by ampoule method of isothermal calorimetry at 28°C. Metabolic rate (r) decreased significantly while peak time (PT) increased with the increase of Yb3+. These results were mainly due to the inhibition of cell growth, which corresponded to the decrease of cell number obtained by cell counting. Compared with cell counting, calorimetry was sensible, easy to use and convenient for monitoring the toxic effects of Yb3+ on cells and freshwater ecosystem. It was also found that cell membrane fluidity decreased significantly under the effects of Yb3+, which indicated that Yb3+ could be membrane active molecules with its effect on cell membranes as fundamental aspect of its toxicity. Springer Science+Business Media LLC, 2007 cell growth nationallicence isothermal calorimetry nationallicence membrane fluidity nationallicence metabolism nationallicence Tetrahymena thermophila BF5 nationallicence Yb3+ nationallicence Chen X. Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, 430079, Wuhan, P. R. China aut Feng W. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut Miao W. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut Shen Y. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut Yu Y. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 89/3(2007-09-01), 835-839 1388-6150 89:3<835 2007 89 10973 https://doi.org/10.1007/s10973-007-8510-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-007-8510-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen X. Institute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, 430079, Wuhan, P. R. China aut NATIONALLICENCE 700 1- Feng W. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut NATIONALLICENCE 700 1- Miao W. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut NATIONALLICENCE 700 1- Shen Y. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut NATIONALLICENCE 700 1- Yu Y. Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, P. R. China aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 89/3(2007-09-01), 835-839 1388-6150 89:3<835 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer