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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1111/nph.14536
|2 doi
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|a pubmed24n0899.xml
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|a (DE-627)NLM269939792
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|a (NLM)28304077
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Ilík, Petr
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Alternative electron transport mediated by flavodiiron proteins is operational in organisms from cyanobacteria up to gymnosperms
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|c 2017
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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 16.02.2018
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|a Date Revised 08.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.
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|a Photo-reduction of O2 to water mediated by flavodiiron proteins (FDPs) represents a safety valve for the photosynthetic electron transport chain in fluctuating light. So far, the FDP-mediated O2 photo-reduction has been evidenced only in cyanobacteria and the moss Physcomitrella; however, a recent phylogenetic analysis of transcriptomes of photosynthetic organisms has also revealed the presence of FDP genes in several nonflowering plant groups. What remains to be clarified is whether the FDP-dependent O2 photo-reduction is actually operational in these organisms. We have established a simple method for the monitoring of FDP-mediated O2 photo-reduction, based on the measurement of redox kinetics of P700 (the electron donor of photosystem I) upon dark-to-light transition. The O2 photo-reduction is manifested as a fast re-oxidation of P700. The validity of the method was verified by experiments with transgenic organisms, namely FDP knock-out mutants of Synechocystis and Physcomitrella and transgenic Arabidopsis plants expressing FDPs from Physcomitrella. We observed the fast P700 re-oxidation in representatives of all green plant groups excluding angiosperms. Our results provide strong evidence that the FDP-mediated O2 photo-reduction is functional in all nonflowering green plant groups. This finding suggests a major change in the strategy of photosynthetic regulation during the evolution of angiosperms
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|a Journal Article
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|a O2 photo-reduction
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|a alternative electron transport
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|a dark-to-light transition
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|a evolution of green plants
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4 |
|a flavodiiron proteins
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| 650 |
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|a photosystem I
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4 |
|a redox changes of P700
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| 650 |
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|a Flavoproteins
|2 NLM
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| 700 |
1 |
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|a Pavlovič, Andrej
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kouřil, Roman
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Alboresi, Alessandro
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Morosinotto, Tomas
|e verfasserin
|4 aut
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| 700 |
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|a Allahverdiyeva, Yagut
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Aro, Eva-Mari
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yamamoto, Hiroshi
|e verfasserin
|4 aut
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| 700 |
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|a Shikanai, Toshiharu
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 214(2017), 3 vom: 05. Mai, Seite 967-972
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:214
|g year:2017
|g number:3
|g day:05
|g month:05
|g pages:967-972
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|u http://dx.doi.org/10.1111/nph.14536
|3 Volltext
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|d 214
|j 2017
|e 3
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|c 05
|h 967-972
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