Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae

Intertidal macroalgae are exposed to strong variation in the physical environment and thus, diverse anti-stress mechanisms are displayed by these organisms. Stress proteins (also called heat shock proteins, HSPs) have been invoked as potential protective mechanism, especially during stressful action...

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Autores principales:	Cruces,Edgardo, Huovinen,Pirjo, Gómez,Iván
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2012
Materias:	stress proteins intertidal macroalgae photosynthesis ROS UV radiation photoprotection
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000400001
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spelling	oai:scielo:S0718-560X20120004000012013-04-12Stress proteins and auxiliary anti-stress compounds in intertidal macroalgaeCruces,EdgardoHuovinen,PirjoGómez,Iván stress proteins intertidal macroalgae photosynthesis ROS UV radiation photoprotection Intertidal macroalgae are exposed to strong variation in the physical environment and thus, diverse anti-stress mechanisms are displayed by these organisms. Stress proteins (also called heat shock proteins, HSPs) have been invoked as potential protective mechanism, especially during stressful action of temperature and solar radiation. Therefore, macroalgae have not normally been used as model organisms in studies of these molecules. The present study compiles the existing information from intertidal species in the context of major factors that have been reported to induce them, e.g. temperature, enhanced solar radiation, contaminants, etc. Additionally, in order to address the question whether the expression of these proteins operates in intertidal macroalgae complementarily with other protective mechanisms, a case study of induction of HSPs after exposure to UV radiation and high temperature in two upper littoral species, Ulva sp. and Porphyra columbina, from southern Chile is presented. In parallel, two well-known responses to stress, photoinhibition of photochemical reactions (Fv/Fm) and ROS scavenging were measured. The results indicated that, although stress proteins were detected in a time span between 3 and 24 h, the responses were not correlated with photochemical and antioxidative response. Overall, the study outlines a potential role of stress proteins in ecophysiological responses developed to cope mainly with high temperature and UV radiation. However, other rapid metabolic adjustments (e.g. high thermo-tolerance of photosynthesis and efficient ROS scavenging), together with other biomolecules (mycosporines, phenols, polyamines, etc.) and morpho-functional adaptations to the intertidal life (e.g. small size, high area/volume ratio) are also important.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.40 n.4 20122012-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000400001en103856/vol40-issue4-fulltext-1
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	stress proteins intertidal macroalgae photosynthesis ROS UV radiation photoprotection
spellingShingle	stress proteins intertidal macroalgae photosynthesis ROS UV radiation photoprotection Cruces,Edgardo Huovinen,Pirjo Gómez,Iván Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
description	Intertidal macroalgae are exposed to strong variation in the physical environment and thus, diverse anti-stress mechanisms are displayed by these organisms. Stress proteins (also called heat shock proteins, HSPs) have been invoked as potential protective mechanism, especially during stressful action of temperature and solar radiation. Therefore, macroalgae have not normally been used as model organisms in studies of these molecules. The present study compiles the existing information from intertidal species in the context of major factors that have been reported to induce them, e.g. temperature, enhanced solar radiation, contaminants, etc. Additionally, in order to address the question whether the expression of these proteins operates in intertidal macroalgae complementarily with other protective mechanisms, a case study of induction of HSPs after exposure to UV radiation and high temperature in two upper littoral species, Ulva sp. and Porphyra columbina, from southern Chile is presented. In parallel, two well-known responses to stress, photoinhibition of photochemical reactions (Fv/Fm) and ROS scavenging were measured. The results indicated that, although stress proteins were detected in a time span between 3 and 24 h, the responses were not correlated with photochemical and antioxidative response. Overall, the study outlines a potential role of stress proteins in ecophysiological responses developed to cope mainly with high temperature and UV radiation. However, other rapid metabolic adjustments (e.g. high thermo-tolerance of photosynthesis and efficient ROS scavenging), together with other biomolecules (mycosporines, phenols, polyamines, etc.) and morpho-functional adaptations to the intertidal life (e.g. small size, high area/volume ratio) are also important.
author	Cruces,Edgardo Huovinen,Pirjo Gómez,Iván
author_facet	Cruces,Edgardo Huovinen,Pirjo Gómez,Iván
author_sort	Cruces,Edgardo
title	Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
title_short	Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
title_full	Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
title_fullStr	Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
title_full_unstemmed	Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
title_sort	stress proteins and auxiliary anti-stress compounds in intertidal macroalgae
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000400001
work_keys_str_mv	AT crucesedgardo stressproteinsandauxiliaryantistresscompoundsinintertidalmacroalgae AT huovinenpirjo stressproteinsandauxiliaryantistresscompoundsinintertidalmacroalgae AT gomezivan stressproteinsandauxiliaryantistresscompoundsinintertidalmacroalgae
_version_	1714205098788257792

Stress proteins and auxiliary anti-stress compounds in intertidal macroalgae

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