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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1111/jpy.12394
|2 doi
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|a pubmed24n1253.xml
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|e rakwb
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|a eng
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|a Koch, Kristina
|e verfasserin
|4 aut
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|a Short- and long-term acclimation patterns of the giant kelp Macrocystis pyrifera (Laminariales, Phaeophyceae) along a depth gradient
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 19.12.2016
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2016 Phycological Society of America.
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|a The giant kelp, Macrocystis pyrifera, is exposed to highly variable irradiance and temperature regimes across its geographic and vertical depth gradients. The objective of this study was to extend our understanding of algal acclimation strategies on different temporal scales to those varying abiotic conditions at various water depths. Different acclimation strategies to various water depths (0.2 and 4 m) between different sampling times (Jan/Feb and Aug/Sept 2012; long-term acclimation) and more rapid adjustments to different depths (0.2, 2 and 4 m; short-term acclimation) during 14 d of transplantation were found. Adjustments of variable Chl a fluorescence, pigment composition (Chl c, fucoxanthin), and the de-epoxidation state of the xanthophyll cycle pigments were responsible for the development of different physiological states with respect to various solar radiation and temperature climates. Interestingly, the results indicated that phlorotannins are important during long-term acclimation while antioxidants have a crucial role during short-term acclimation. Furthermore, the results suggested that modifications in total lipids and fatty acid compositions apparently also might play a role in depth acclimation. In Aug/Sept (austral winter), M. pyrifera responded to the transplantation from 4 m to 0.2 m depth with a rise in the degree of saturation and a switch from shorter- to longer-chain fatty acids. These changes seem to be essential for the readjustment of thylakoid membranes and might, thus, facilitate efficient photosynthesis under changing irradiances and temperatures. Further experiments are needed to disentangle the relative contribution of solar radiation, temperature and also other abiotic parameters in the observed physiological changes
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Chile
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|a PAR
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|a acclimation
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|a antioxidants
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|a fatty acid composition
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|a phlorotannins
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|a temperature
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|a total lipids
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|a Antioxidants
|2 NLM
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|a Fatty Acids
|2 NLM
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|a Photosystem II Protein Complex
|2 NLM
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|a Tannins
|2 NLM
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|a Xanthophylls
|2 NLM
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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|a Chlorophyll A
|2 NLM
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|a YF5Q9EJC8Y
|2 NLM
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| 700 |
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|a Thiel, Martin
|e verfasserin
|4 aut
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|a Hagen, Wilhelm
|e verfasserin
|4 aut
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|a Graeve, Martin
|e verfasserin
|4 aut
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|a Gómez, Iván
|e verfasserin
|4 aut
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|a Jofre, David
|e verfasserin
|4 aut
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|a Hofmann, Laurie C
|e verfasserin
|4 aut
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|a Tala, Fadia
|e verfasserin
|4 aut
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|a Bischof, Kai
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of phycology
|d 1966
|g 52(2016), 2 vom: 12. Apr., Seite 260-73
|w (DE-627)NLM098182994
|x 1529-8817
|7 nnns
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| 773 |
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|g volume:52
|g year:2016
|g number:2
|g day:12
|g month:04
|g pages:260-73
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|u http://dx.doi.org/10.1111/jpy.12394
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