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240919s2024 xx |||||o 00| ||eng c |
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|a 10.1111/jpy.13495
|2 doi
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|a pubmed25n1258.xml
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|a eng
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|a Garric, Sarah
|e verfasserin
|4 aut
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|a Photophysiology of the haploid form of the cryptophyte Teleaulax amphioxeia
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|c 2024
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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
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|2 rdacarrier
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|a Date Completed 22.10.2024
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|a Date Revised 24.10.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2024 Phycological Society of America.
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|a Cryptophytes are abundant and ubiquitous microalgae that constitute a major plastid source for kleptoplastidic ciliates and dinoflagellates. Despite their ecological significance, the understanding of their light preferences and photophysiology remains limited. Here, we provide a comprehensive study of the response of the haploid strain Teleaulax amphioxeia (Cr10EHU) to varying light irradiance. This strain is capable of growing under a wide range of irradiance levels, notably by finely tuning the different pigments bound to the membrane light-harvesting proteins. Analysis of the luminal phycoerythrin content revealed remarkable flexibility, with phycoerythrin emerging as a pivotal protein facilitating acclimation to varying light levels. Detailed ultrastructure examinations unveiled that this adaptability was supported by the synthesis of large thylakoidal vesicles, likely enhancing the capture of green photons efficiently under low light, a phenomenon previously undocumented. Teleaulax amphioxeia Cr10EHU effectively regulated light utilization by using a cryptophyte state transition-like process, with a larger amplitude observed under high growth irradiance. Furthermore, our results revealed the establishment of growth irradiance-dependent non-photochemical quenching of fluorescence, likely inducing the dissipation of excess light. This study underscores the particularities and the significant photoadaptability of the plastid of the haploid form of T. amphioxeia. It constitutes a comprehensive photophysiological characterization of the Cr10EHU strain that paves the way for future studies of the kleptoplastidy process
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Plagioselmis
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| 650 |
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|a Teleaulax
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|a cryptophyte
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|a light
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|a photoacclimation
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|a photosynthesis
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|a Phycoerythrin
|2 NLM
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| 650 |
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|a 11016-17-4
|2 NLM
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| 700 |
1 |
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|a Ratin, Morgane
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gallet, Benoit
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Decelle, Johan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Probert, Ian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rodriguez, Francisco
|e verfasserin
|4 aut
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|a Six, Christophe
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of phycology
|d 1966
|g 60(2024), 5 vom: 04. Okt., Seite 1220-1236
|w (DE-627)NLM098182994
|x 1529-8817
|7 nnas
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| 773 |
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|g volume:60
|g year:2024
|g number:5
|g day:04
|g month:10
|g pages:1220-1236
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|u http://dx.doi.org/10.1111/jpy.13495
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