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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2010.04.009
|2 doi
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|a pubmed24n0661.xml
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|a eng
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| 100 |
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|a Martín, Mercedes
|e verfasserin
|4 aut
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| 245 |
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|a Plastid ndh genes in plant evolution
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 15.11.2010
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|a Date Revised 18.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright 2010 Elsevier Masson SAS. All rights reserved.
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|a The plastid ndh genes encode components of the thylakoid Ndh complex which purportedly acts as an electron feeding valve to adjust the redox level of the cyclic photosynthetic electron transporters. During the process of evolution from endosymbiosis to modern chloroplast, most cyanobacterial genes were lost or transferred to nucleus. Eleven ndh genes are among the 150-200 genes remaining in higher plant chloroplast DNA, out of some 3000 genes in the original prokaryotic Cyanobacteria in which homologues to ndh genes encode components of the respiratory Complex I and probably other complexes. The ndh genes are absent in all sequenced plastid DNAs of algae except for the Charophyceae and some Prasinophyceae. With the possible exclusion of some Conifers and Gnetales, the plastid DNA of all photosynthetic land plants contains the ndh genes, whereas they are absent in epiphytic plants that have also lost genes for the photosynthetic machinery. Therefore, the functional role of the ndh genes seems closely related to the land adaptation of photosynthesis. Transcripts of several plastid genes require C to U editing. The ndh genes concentrate about 50% of the editing sites of angiosperm plastid transcripts. Editing sites may be remnants from an ancestor in which a number of T to C inactivating mutations took place in the ndh genes which, during evolution, are being corrected back to T. The comparison of homologous editing sites in the mRNAs of angiosperm ndh genes provides a tool to investigate selective and permissive environmental conditions of past evolutionary events
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Review
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|a NADPH Dehydrogenase
|2 NLM
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|a Sabater, Bartolomé
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 48(2010), 8 vom: 15. Aug., Seite 636-45
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|x 1873-2690
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|g volume:48
|g year:2010
|g number:8
|g day:15
|g month:08
|g pages:636-45
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|u http://dx.doi.org/10.1016/j.plaphy.2010.04.009
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