Molecular stress response in polar algae
Geographical and vertical distribution patterns of macroalgae are constrained by abiotic factors such as light, including UVR and temperature. Hence, future global environmental changes could have a significant impact on geographic and vertical distribution patterns, as well as primary productivity....
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ftunivmalaga:oai:riuma.uma.es:10630/14537 2024-06-23T07:47:26+00:00 Molecular stress response in polar algae Heinrich, Sandra 2017 http://hdl.handle.net/10630/14537 eng eng Conferencia Invitada Málaga, España 29 septiembre 2017 http://hdl.handle.net/10630/14537 info:eu-repo/semantics/openAccess by-nc-nd Algas marinas - Factores climáticos Algae Primary production Climate change Arctic Polar regions info:eu-repo/semantics/conferenceObject 2017 ftunivmalaga 2024-06-04T14:31:53Z Geographical and vertical distribution patterns of macroalgae are constrained by abiotic factors such as light, including UVR and temperature. Hence, future global environmental changes could have a significant impact on geographic and vertical distribution patterns, as well as primary productivity. Polar waters are particularly vulnerable to warming but also to ocean acidification due to the increased solubility of CO2 in cold waters. Many studies have been conducted on the growth and photosynthetic performance of macroalgae under manifold stresses, yet the involved molecular processes of acclimation and adaption are still poorly understood. To compare molecular acclimation mechanisms in polar macroalgae, gene expression under abiotic stress has been investigated in an Arctic species, Saccharina latissima, and an Antarctic species, Desmarestia anceps. Both species response to abiotic stress with a multitude of transcriptional changes, but show different acclimation strategies. Critical components of acclimation mechanisms in Saccharina latissima are the differential regulation of photosynthetic components, ROS scavenging and carbohydrate metabolism, Desmarestia anceps on the contrary shows a high constitutive expression of the latter. Main components of molecular acclimation mechanisms to light and temperature stress in Desmarestia anceps include induction of protein and lipid modification processes for maintaining membrane and protein function. The high constitutive expression of several metabolism types in Desmarestia anceps might be due to the strong adaption to cold environments. However, as high constitutive gene expression requires extra energy, this lack of genetic regulation might display a disadvantage with respect to cosmopolitan eurythermic species in near-future scenarios. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech Conference Object Antarc* Antarctic Arctic Climate change Ocean acidification RIUMA - Repositorio Institucional de la Universidad de Málaga Arctic Antarctic |
institution |
Open Polar |
collection |
RIUMA - Repositorio Institucional de la Universidad de Málaga |
op_collection_id |
ftunivmalaga |
language |
English |
topic |
Algas marinas - Factores climáticos Algae Primary production Climate change Arctic Polar regions |
spellingShingle |
Algas marinas - Factores climáticos Algae Primary production Climate change Arctic Polar regions Heinrich, Sandra Molecular stress response in polar algae |
topic_facet |
Algas marinas - Factores climáticos Algae Primary production Climate change Arctic Polar regions |
description |
Geographical and vertical distribution patterns of macroalgae are constrained by abiotic factors such as light, including UVR and temperature. Hence, future global environmental changes could have a significant impact on geographic and vertical distribution patterns, as well as primary productivity. Polar waters are particularly vulnerable to warming but also to ocean acidification due to the increased solubility of CO2 in cold waters. Many studies have been conducted on the growth and photosynthetic performance of macroalgae under manifold stresses, yet the involved molecular processes of acclimation and adaption are still poorly understood. To compare molecular acclimation mechanisms in polar macroalgae, gene expression under abiotic stress has been investigated in an Arctic species, Saccharina latissima, and an Antarctic species, Desmarestia anceps. Both species response to abiotic stress with a multitude of transcriptional changes, but show different acclimation strategies. Critical components of acclimation mechanisms in Saccharina latissima are the differential regulation of photosynthetic components, ROS scavenging and carbohydrate metabolism, Desmarestia anceps on the contrary shows a high constitutive expression of the latter. Main components of molecular acclimation mechanisms to light and temperature stress in Desmarestia anceps include induction of protein and lipid modification processes for maintaining membrane and protein function. The high constitutive expression of several metabolism types in Desmarestia anceps might be due to the strong adaption to cold environments. However, as high constitutive gene expression requires extra energy, this lack of genetic regulation might display a disadvantage with respect to cosmopolitan eurythermic species in near-future scenarios. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech |
format |
Conference Object |
author |
Heinrich, Sandra |
author_facet |
Heinrich, Sandra |
author_sort |
Heinrich, Sandra |
title |
Molecular stress response in polar algae |
title_short |
Molecular stress response in polar algae |
title_full |
Molecular stress response in polar algae |
title_fullStr |
Molecular stress response in polar algae |
title_full_unstemmed |
Molecular stress response in polar algae |
title_sort |
molecular stress response in polar algae |
publishDate |
2017 |
url |
http://hdl.handle.net/10630/14537 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Climate change Ocean acidification |
genre_facet |
Antarc* Antarctic Arctic Climate change Ocean acidification |
op_relation |
Conferencia Invitada Málaga, España 29 septiembre 2017 http://hdl.handle.net/10630/14537 |
op_rights |
info:eu-repo/semantics/openAccess by-nc-nd |
_version_ |
1802651529035907072 |