A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant
Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifical...
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| Autor*in: |
JANSEN, M. A. K. [verfasserIn] HILL, L. M. [verfasserIn] THORNELEY, R. N. F. [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Science Ltd ; 2004 |
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Online-Ressource |
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| Reproduktion: |
2004 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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In: Plant, cell & environment - Oxford [u.a.] : Wiley-Blackwell, 1978, 27(2004), 5, Seite 0 |
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volume:27 ; year:2004 ; number:5 ; pages:0 |
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| DOI / URN: |
10.1111/j.1365-3040.2004.01174.x |
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| 520 | |a Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. | ||
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10.1111/j.1365-3040.2004.01174.x doi (DE-627)NLEJ243838689 DE-627 ger DE-627 rakwb JANSEN, M. A. K. verfasserin aut A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| abiotic stress HILL, L. M. verfasserin aut THORNELEY, R. N. F. verfasserin aut In Plant, cell & environment Oxford [u.a.] : Wiley-Blackwell, 1978 27(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926944 (DE-600)2020843-1 1365-3040 nnns volume:27 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-3040.2004.01174.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 27 2004 5 0 |
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10.1111/j.1365-3040.2004.01174.x doi (DE-627)NLEJ243838689 DE-627 ger DE-627 rakwb JANSEN, M. A. K. verfasserin aut A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| abiotic stress HILL, L. M. verfasserin aut THORNELEY, R. N. F. verfasserin aut In Plant, cell & environment Oxford [u.a.] : Wiley-Blackwell, 1978 27(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926944 (DE-600)2020843-1 1365-3040 nnns volume:27 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-3040.2004.01174.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 27 2004 5 0 |
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10.1111/j.1365-3040.2004.01174.x doi (DE-627)NLEJ243838689 DE-627 ger DE-627 rakwb JANSEN, M. A. K. verfasserin aut A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| abiotic stress HILL, L. M. verfasserin aut THORNELEY, R. N. F. verfasserin aut In Plant, cell & environment Oxford [u.a.] : Wiley-Blackwell, 1978 27(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926944 (DE-600)2020843-1 1365-3040 nnns volume:27 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-3040.2004.01174.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 27 2004 5 0 |
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10.1111/j.1365-3040.2004.01174.x doi (DE-627)NLEJ243838689 DE-627 ger DE-627 rakwb JANSEN, M. A. K. verfasserin aut A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| abiotic stress HILL, L. M. verfasserin aut THORNELEY, R. N. F. verfasserin aut In Plant, cell & environment Oxford [u.a.] : Wiley-Blackwell, 1978 27(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926944 (DE-600)2020843-1 1365-3040 nnns volume:27 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-3040.2004.01174.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 27 2004 5 0 |
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10.1111/j.1365-3040.2004.01174.x doi (DE-627)NLEJ243838689 DE-627 ger DE-627 rakwb JANSEN, M. A. K. verfasserin aut A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant Oxford, UK Blackwell Science Ltd 2004 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. 2004 Blackwell Publishing Journal Backfiles 1879-2005 |2004|||||||||| abiotic stress HILL, L. M. verfasserin aut THORNELEY, R. N. F. verfasserin aut In Plant, cell & environment Oxford [u.a.] : Wiley-Blackwell, 1978 27(2004), 5, Seite 0 Online-Ressource (DE-627)NLEJ243926944 (DE-600)2020843-1 1365-3040 nnns volume:27 year:2004 number:5 pages:0 http://dx.doi.org/10.1111/j.1365-3040.2004.01174.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 27 2004 5 0 |
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a novel stress-acclimation response in spirodela punctata (lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant |
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A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant |
| abstract |
Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. |
| abstractGer |
Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. |
| abstract_unstemmed |
Peroxidases are haem-containing enzymes capable of oxidizing a wide range of substrates. This article describes the presence of peroxidase activity in the growth medium of axenic Spirodela punctata (Lemnaceae) cultures. It was found that the release of extracellular peroxidase activity is specifically enhanced by phytotoxic, halogenated phenols but not by other abiotic stress-factors, elicitors or plant metabolites. Based on the concentration dependence of 2,4,6-trichlorophenol (TCP)-enhanced peroxidase release, it is concluded that release is not simply a consequence of physiological damage, but rather requires metabolically healthy fronds. In vitro studies (UV/VIS spectroscopy and liquid chromatography/mass spectrometry) show that the extracellular duckweed peroxidase (SpEx), which was partially purified from Spirodela growth medium, is capable of catalysing the oxidative dechlorination of TCP with hydrogen peroxide as the electron acceptor. It is proposed that the ability of S. punctata to specifically sense environmentally persistent phytotoxic chlorophenols, and to respond by increasing extracellular levels of a peroxidase capable of catalysing their oxidative dechlorination, is part of the protection strategy of this aquatic plant against xenobiotic stress. |
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A novel stress-acclimation response in Spirodela punctata (Lemnaceae): 2,4,6-trichlorophenol triggers an increase in the level of an extracellular peroxidase, capable of the oxidative dechlorination of this xenobiotic pollutant |
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