Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression
- Autores
- Pezzoni, Magdalena; De Troch, Marleen; Pizarro, Ramón Augusto; Costa, Cristina Susana
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In bacteria, exposure to changes in environmental conditions can alter membrane fluidity, thereby affecting its essential functions in cell physiology. To adapt to these changes, bacteria maintain appropriate fluidity by varying the composition of the fatty acids of membrane phospholipids, a phenomenon known as homeophasic adaptation. In Pseudomonas aeruginosa, this response is achieved mainly by two mechanisms of fatty acid desaturation: the FabA–FabB and DesA–DesB systems. This study analyzed the effect of ultraviolet-A (UVA) radiation—the major fraction of solar UV radiation reaching the Earth's surface—on the homeophasic process. The prototypical strain PAO1 was grown under sublethal UVA doses or in the dark, and the profiles of membrane fatty acids were compared at early logarithmic, logarithmic and stationary growth phases. In the logarithmic growth phase, it was observed that growth under sublethal UVA doses induced the expression of the desaturase-encoding genes desA and desB and increased the proportion of unsaturated fatty acids; in addition, membrane fluidity could also increase, as suggested by the indices used as indicators of this parameter. The opposite effect was observed in the stationary growth phase. These results demonstrate the relevant role of UVA on the homeophasic response at transcriptional level.
Fil: Pezzoni, Magdalena. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: De Troch, Marleen. University of Ghent; Bélgica
Fil: Pizarro, Ramón Augusto. Comisión Nacional de Energía Atómica; Argentina
Fil: Costa, Cristina Susana. Comisión Nacional de Energía Atómica; Argentina - Materia
-
RADIACIÓN ULTRAVIOLETA A
HOMEOPHASIC ADAPTATION
PSEUDOMONAS AERUGINOSA
FATTY ACID - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/196864
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Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB ExpressionPezzoni, MagdalenaDe Troch, MarleenPizarro, Ramón AugustoCosta, Cristina SusanaRADIACIÓN ULTRAVIOLETA AHOMEOPHASIC ADAPTATIONPSEUDOMONAS AERUGINOSAFATTY ACIDhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1In bacteria, exposure to changes in environmental conditions can alter membrane fluidity, thereby affecting its essential functions in cell physiology. To adapt to these changes, bacteria maintain appropriate fluidity by varying the composition of the fatty acids of membrane phospholipids, a phenomenon known as homeophasic adaptation. In Pseudomonas aeruginosa, this response is achieved mainly by two mechanisms of fatty acid desaturation: the FabA–FabB and DesA–DesB systems. This study analyzed the effect of ultraviolet-A (UVA) radiation—the major fraction of solar UV radiation reaching the Earth's surface—on the homeophasic process. The prototypical strain PAO1 was grown under sublethal UVA doses or in the dark, and the profiles of membrane fatty acids were compared at early logarithmic, logarithmic and stationary growth phases. In the logarithmic growth phase, it was observed that growth under sublethal UVA doses induced the expression of the desaturase-encoding genes desA and desB and increased the proportion of unsaturated fatty acids; in addition, membrane fluidity could also increase, as suggested by the indices used as indicators of this parameter. The opposite effect was observed in the stationary growth phase. These results demonstrate the relevant role of UVA on the homeophasic response at transcriptional level.Fil: Pezzoni, Magdalena. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: De Troch, Marleen. University of Ghent; BélgicaFil: Pizarro, Ramón Augusto. Comisión Nacional de Energía Atómica; ArgentinaFil: Costa, Cristina Susana. Comisión Nacional de Energía Atómica; ArgentinaWiley Blackwell Publishing, Inc2022-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/196864Pezzoni, Magdalena; De Troch, Marleen; Pizarro, Ramón Augusto; Costa, Cristina Susana; Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 98; 4; 7-2022; 886-8930031-8655CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/php.13548info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:10:32Zoai:ri.conicet.gov.ar:11336/196864instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:10:33.156CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
title |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
spellingShingle |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression Pezzoni, Magdalena RADIACIÓN ULTRAVIOLETA A HOMEOPHASIC ADAPTATION PSEUDOMONAS AERUGINOSA FATTY ACID |
title_short |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
title_full |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
title_fullStr |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
title_full_unstemmed |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
title_sort |
Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression |
dc.creator.none.fl_str_mv |
Pezzoni, Magdalena De Troch, Marleen Pizarro, Ramón Augusto Costa, Cristina Susana |
author |
Pezzoni, Magdalena |
author_facet |
Pezzoni, Magdalena De Troch, Marleen Pizarro, Ramón Augusto Costa, Cristina Susana |
author_role |
author |
author2 |
De Troch, Marleen Pizarro, Ramón Augusto Costa, Cristina Susana |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
RADIACIÓN ULTRAVIOLETA A HOMEOPHASIC ADAPTATION PSEUDOMONAS AERUGINOSA FATTY ACID |
topic |
RADIACIÓN ULTRAVIOLETA A HOMEOPHASIC ADAPTATION PSEUDOMONAS AERUGINOSA FATTY ACID |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.7 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
In bacteria, exposure to changes in environmental conditions can alter membrane fluidity, thereby affecting its essential functions in cell physiology. To adapt to these changes, bacteria maintain appropriate fluidity by varying the composition of the fatty acids of membrane phospholipids, a phenomenon known as homeophasic adaptation. In Pseudomonas aeruginosa, this response is achieved mainly by two mechanisms of fatty acid desaturation: the FabA–FabB and DesA–DesB systems. This study analyzed the effect of ultraviolet-A (UVA) radiation—the major fraction of solar UV radiation reaching the Earth's surface—on the homeophasic process. The prototypical strain PAO1 was grown under sublethal UVA doses or in the dark, and the profiles of membrane fatty acids were compared at early logarithmic, logarithmic and stationary growth phases. In the logarithmic growth phase, it was observed that growth under sublethal UVA doses induced the expression of the desaturase-encoding genes desA and desB and increased the proportion of unsaturated fatty acids; in addition, membrane fluidity could also increase, as suggested by the indices used as indicators of this parameter. The opposite effect was observed in the stationary growth phase. These results demonstrate the relevant role of UVA on the homeophasic response at transcriptional level. Fil: Pezzoni, Magdalena. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: De Troch, Marleen. University of Ghent; Bélgica Fil: Pizarro, Ramón Augusto. Comisión Nacional de Energía Atómica; Argentina Fil: Costa, Cristina Susana. Comisión Nacional de Energía Atómica; Argentina |
description |
In bacteria, exposure to changes in environmental conditions can alter membrane fluidity, thereby affecting its essential functions in cell physiology. To adapt to these changes, bacteria maintain appropriate fluidity by varying the composition of the fatty acids of membrane phospholipids, a phenomenon known as homeophasic adaptation. In Pseudomonas aeruginosa, this response is achieved mainly by two mechanisms of fatty acid desaturation: the FabA–FabB and DesA–DesB systems. This study analyzed the effect of ultraviolet-A (UVA) radiation—the major fraction of solar UV radiation reaching the Earth's surface—on the homeophasic process. The prototypical strain PAO1 was grown under sublethal UVA doses or in the dark, and the profiles of membrane fatty acids were compared at early logarithmic, logarithmic and stationary growth phases. In the logarithmic growth phase, it was observed that growth under sublethal UVA doses induced the expression of the desaturase-encoding genes desA and desB and increased the proportion of unsaturated fatty acids; in addition, membrane fluidity could also increase, as suggested by the indices used as indicators of this parameter. The opposite effect was observed in the stationary growth phase. These results demonstrate the relevant role of UVA on the homeophasic response at transcriptional level. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/196864 Pezzoni, Magdalena; De Troch, Marleen; Pizarro, Ramón Augusto; Costa, Cristina Susana; Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 98; 4; 7-2022; 886-893 0031-8655 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/196864 |
identifier_str_mv |
Pezzoni, Magdalena; De Troch, Marleen; Pizarro, Ramón Augusto; Costa, Cristina Susana; Homeophasic Adaptation in Response to UVA Radiation in Pseudomonas aeruginosa: Changes of Membrane Fatty Acid Composition and Induction of desA and desB Expression; Wiley Blackwell Publishing, Inc; Photochemistry and Photobiology; 98; 4; 7-2022; 886-893 0031-8655 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/php.13548 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613996040159232 |
score |
13.070432 |