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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2020.110798
|2 doi
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|a pubmed25n1070.xml
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|a (DE-627)NLM321284089
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|a (NLM)33568297
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|a (PII)S0168-9452(20)30404-0
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Toyoshima, Masakazu
|e verfasserin
|4 aut
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|a Role of type I NADH dehydrogenase in Synechocystis sp. PCC 6803 under phycobilisome excited red light
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 17.05.2021
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|a Date Revised 17.05.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier B.V. All rights reserved.
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|a Cyanobacterial type I NADH dehydrogenase (NDH-1) is involved in various bioenergetic reactions including respiration, cyclic electron transport (CET), and CO2 uptake. The role of NDH-1 is usually minor under normal growth conditions and becomes important under stress conditions. However, in our previous study, flux balance analysis (FBA) simulation predicted that the drive of NDH-1 as CET pathway with a photosystem (PS) I/PSII excitation ratio around 1.0 contributes to achieving an optimal specific growth rate. In this study, to experimentally elucidate the predicted functions of NDH-1, first, we measured the PSI/PSII excitation ratios of Synechocystis sp. PCC 6803 grown under four types of spectral light conditions. The specific growth rate was the highest and PSI/PSII excitation ratio was with 0.88 under the single-peak light at 630 nm (Red1). Considering this measured excitation ratios, FBA simulation predicted that NDH-1-dependent electron transport was the major pathway under Red1. Moreover, in actual culture, an NDH-1 deletion strain had slower growth rate than that of wild type only under Red1 light condition. Therefore, we experimentally demonstrated that NDH-1 plays an important role under optimal light conditions such as Red1 light, where Synechocystis exhibits the highest specific growth rate and PSI/PSII excitation ratio of around 1.0
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|a Journal Article
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|a Cyanobacteria
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|a Flux balance analysis
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|a Genome-scale model
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|a NDH-1
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|a PSI/PSII excitation ratio
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|a Bacterial Proteins
|2 NLM
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|a Photosystem I Protein Complex
|2 NLM
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|a Photosystem II Protein Complex
|2 NLM
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|a Phycobilisomes
|2 NLM
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|a Electron Transport Complex I
|2 NLM
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| 650 |
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|a EC 7.1.1.2
|2 NLM
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| 700 |
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|a Yamamoto, Chiaki
|e verfasserin
|4 aut
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|a Ueno, Yoshifumi
|e verfasserin
|4 aut
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| 700 |
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|a Toya, Yoshihiro
|e verfasserin
|4 aut
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|a Akimoto, Seiji
|e verfasserin
|4 aut
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| 700 |
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|a Shimizu, Hiroshi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 304(2021) vom: 20. März, Seite 110798
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnas
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| 773 |
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|g volume:304
|g year:2021
|g day:20
|g month:03
|g pages:110798
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|u http://dx.doi.org/10.1016/j.plantsci.2020.110798
|3 Volltext
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|d 304
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|b 20
|c 03
|h 110798
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