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题名: Studies on the nongrowth metabolism of the different strains of Tetrahymena cells by isothermal microcalorimetry
作者: Chen, X. J.1, 2; Feng, W. S.3; Yu, Y. H.3
通讯作者: Chen, XJ (reprint author), Minist Water Resources, Inst Hydroecol, Key Lab Ecol Impacts Hydraul Projects & Restorat, Wuhan 430079, Peoples R China.
关键词: Isothermal microcalorimetry ; Tetrahymena ; Nongrowth metabolism ; Power-time curves ; Power outputs
刊名: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
发表日期: 2014-03-01
DOI: 10.1007/s10973-013-3324-8
卷: 115, 期:3, 页:2145-2149
收录类别: SCI
文章类型: Article
部门归属: [Chen, X. J.] Minist Water Resources, Inst Hydroecol, Key Lab Ecol Impacts Hydraul Projects & Restorat, Wuhan 430079, Peoples R China; [Chen, X. J.] Chinese Acad Sci, Wuhan 430079, Peoples R China; [Feng, W. S.; Yu, Y. H.] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Physical Sciences
资助者: Nature and Science Foundation of China [51009099, 30170136]
类目[WOS]: Chemistry, Analytical ; Chemistry, Physical
研究领域[WOS]: Chemistry
摘要: The nongrowth metabolic processes of Tetrahymena strains with the different cell densities were monitored by isothermal microcalorimetry, including Tetrahymena thermophila BF1, Tetrahymena thermophila SB210, Tetrahymena pyriformis GL, the mixed cells of T. thermophila BF1 and T. thermophila SB210, and the mixed cells of T. thermophila BF1 and T. pyriformis GL. All the typical power-time curves showed a decreasing trend on the whole. It was found that total heat production (Q (t)) and maximum heat output (P (m)) decreased significantly with the decrease of cell density. Cell density did not influence significantly the maximum heat output per cell (P (cell)) of Tetrahymena cells, which was probably due to enough oxygen. The P (cell) and metabolic decrease rate constant (K) values for the mixture of T. thermophila BF1 and T. pyriformis GL, and that of T. thermophila BF1 and T. thermophila SB210 were similar to the mean values of P (cell) and K for the corresponding single Tetrahymena strain, respectively. It was speculated that the cell mixing did not possibly influence significantly their P (cell) and K values because of no competition for nutrition, oxygen, and room, and the low conjunction percentages.
英文摘要: The nongrowth metabolic processes of Tetrahymena strains with the different cell densities were monitored by isothermal microcalorimetry, including Tetrahymena thermophila BF1, Tetrahymena thermophila SB210, Tetrahymena pyriformis GL, the mixed cells of T. thermophila BF1 and T. thermophila SB210, and the mixed cells of T. thermophila BF1 and T. pyriformis GL. All the typical power-time curves showed a decreasing trend on the whole. It was found that total heat production (Q (t)) and maximum heat output (P (m)) decreased significantly with the decrease of cell density. Cell density did not influence significantly the maximum heat output per cell (P (cell)) of Tetrahymena cells, which was probably due to enough oxygen. The P (cell) and metabolic decrease rate constant (K) values for the mixture of T. thermophila BF1 and T. pyriformis GL, and that of T. thermophila BF1 and T. thermophila SB210 were similar to the mean values of P (cell) and K for the corresponding single Tetrahymena strain, respectively. It was speculated that the cell mixing did not possibly influence significantly their P (cell) and K values because of no competition for nutrition, oxygen, and room, and the low conjunction percentages.
关键词[WOS]: CALORIMETRY ; PYRIFORMIS ; GROWTH
语种: 英语
WOS记录号: WOS:000332087000017
ISSN号: 1388-6150
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20035
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Minist Water Resources, Inst Hydroecol, Key Lab Ecol Impacts Hydraul Projects & Restorat, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Wuhan 430079, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
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