Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress
Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohyd...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Tripathi, B. N. [verfasserIn] Gaur, J. P. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2006 |
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| Übergeordnetes Werk: |
Enthalten in: Protoplasma - Wien : Springer, 1926, 229(2006), 1 vom: Nov., Seite 1-9 |
|---|---|
| Übergeordnetes Werk: |
volume:229 ; year:2006 ; number:1 ; month:11 ; pages:1-9 |
| Links: |
|---|
| DOI / URN: |
10.1007/s00709-006-0196-9 |
|---|
| Katalog-ID: |
SPR00754359X |
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| 100 | 1 | |a Tripathi, B. N. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
| 264 | 1 | |c 2006 | |
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| 520 | |a Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. | ||
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10.1007/s00709-006-0196-9 doi (DE-627)SPR00754359X (SPR)s00709-006-0196-9-e DE-627 ger DE-627 rakwb eng 570 ASE 42.00 bkl Tripathi, B. N. verfasserin aut Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. Gaur, J. P. verfasserin aut Enthalten in Protoplasma Wien : Springer, 1926 229(2006), 1 vom: Nov., Seite 1-9 (DE-627)254639135 (DE-600)1463033-3 1615-6102 nnns volume:229 year:2006 number:1 month:11 pages:1-9 https://dx.doi.org/10.1007/s00709-006-0196-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 42.00 ASE AR 229 2006 1 11 1-9 |
| spelling |
10.1007/s00709-006-0196-9 doi (DE-627)SPR00754359X (SPR)s00709-006-0196-9-e DE-627 ger DE-627 rakwb eng 570 ASE 42.00 bkl Tripathi, B. N. verfasserin aut Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. Gaur, J. P. verfasserin aut Enthalten in Protoplasma Wien : Springer, 1926 229(2006), 1 vom: Nov., Seite 1-9 (DE-627)254639135 (DE-600)1463033-3 1615-6102 nnns volume:229 year:2006 number:1 month:11 pages:1-9 https://dx.doi.org/10.1007/s00709-006-0196-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 42.00 ASE AR 229 2006 1 11 1-9 |
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10.1007/s00709-006-0196-9 doi (DE-627)SPR00754359X (SPR)s00709-006-0196-9-e DE-627 ger DE-627 rakwb eng 570 ASE 42.00 bkl Tripathi, B. N. verfasserin aut Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. Gaur, J. P. verfasserin aut Enthalten in Protoplasma Wien : Springer, 1926 229(2006), 1 vom: Nov., Seite 1-9 (DE-627)254639135 (DE-600)1463033-3 1615-6102 nnns volume:229 year:2006 number:1 month:11 pages:1-9 https://dx.doi.org/10.1007/s00709-006-0196-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 42.00 ASE AR 229 2006 1 11 1-9 |
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10.1007/s00709-006-0196-9 doi (DE-627)SPR00754359X (SPR)s00709-006-0196-9-e DE-627 ger DE-627 rakwb eng 570 ASE 42.00 bkl Tripathi, B. N. verfasserin aut Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. Gaur, J. P. verfasserin aut Enthalten in Protoplasma Wien : Springer, 1926 229(2006), 1 vom: Nov., Seite 1-9 (DE-627)254639135 (DE-600)1463033-3 1615-6102 nnns volume:229 year:2006 number:1 month:11 pages:1-9 https://dx.doi.org/10.1007/s00709-006-0196-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 42.00 ASE AR 229 2006 1 11 1-9 |
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10.1007/s00709-006-0196-9 doi (DE-627)SPR00754359X (SPR)s00709-006-0196-9-e DE-627 ger DE-627 rakwb eng 570 ASE 42.00 bkl Tripathi, B. N. verfasserin aut Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. Gaur, J. P. verfasserin aut Enthalten in Protoplasma Wien : Springer, 1926 229(2006), 1 vom: Nov., Seite 1-9 (DE-627)254639135 (DE-600)1463033-3 1615-6102 nnns volume:229 year:2006 number:1 month:11 pages:1-9 https://dx.doi.org/10.1007/s00709-006-0196-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_266 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 42.00 ASE AR 229 2006 1 11 1-9 |
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N.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2006</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. 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Tripathi, B. N. |
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Tripathi, B. N. ddc 570 bkl 42.00 Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
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570 ASE 42.00 bkl Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
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Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
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Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
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physiological behavior of scenedesmus sp. during exposure to elevated levels of cu and zn and after withdrawal of metal stress |
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Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
| abstract |
Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. |
| abstractGer |
Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. |
| abstract_unstemmed |
Summary. A 48 h exposure of Scenedesmus sp. to sublethal concentrations of Cu (2.5 and 10 μM) and Zn (5 and 25 μM) caused a concentration-dependent inhibition of growth, photosynthesis, respiration, $ NO_{3} $− uptake, and nitrate reductase (EC 1.6.6.1) activity, and a reduction in protein, carbohydrate, and photosynthetic-pigment levels with a concomitant increase in intracellular levels of the test metals. After exposure, algal cells were transferred to the basal medium without the excess level of test metals, to study the recovery of various processes. The growth of the test algae had not recovered up to 12 h after transfer to the basal medium, but some physiological parameters such as photosynthesis and respiration recovered within 6 h. The quicker recovery of photosynthesis and respiration might be used as acclimatory responses as they prepare a background for the recovery of other parameters, including growth, of the test alga by generating energy, forming photosynthate, and establishing the usual catabolism to attain normal conditions. Most of the processes recovered completely or almost completely after being stressed with 2.5 μM Cu or 5 μM Zn. However, the maintenance of a relatively high level of Cu and Zn in the cells previously exposed to 10 μM Cu and 25 μM Zn slowed down the recovery of different processes, which did not fully recover even at the end of the experiment after 96 h. The present study demonstrates that a chain of metabolic events, beginning with respiration and photosynthesis and continuing with assimilation and uptake of nutrients and subsequent restoration of other metabolic processes, is involved in the recovery of the algae from Cu and Zn stress. Each studied parameter seems to play an important role in balancing the cellular homeostasis during recovery from metal stress. |
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1 |
| title_short |
Physiological behavior of Scenedesmus sp. during exposure to elevated levels of Cu and Zn and after withdrawal of metal stress |
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https://dx.doi.org/10.1007/s00709-006-0196-9 |
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Gaur, J. P. |
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10.1007/s00709-006-0196-9 |
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2024-07-03T13:36:13.863Z |
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| score |
7.4007235 |