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Title

An event of alternative splicing affects the expression of the NTRC gene, encoding NADPH-thioredoxin reductase C, in seed plants

AuthorsNájera, Victoria A.; González, M. Cristina; Pérez-Ruiz, Juan Manuel ; Cejudo, Francisco Javier
KeywordsCyanobacteria
Algae
NADPH thioredoxin reductase C
Phylogenetic analysis
Plant
Alternative splicing
Issue Date2017
PublisherElsevier
CitationPlant Science 258: 21- 28 (2017)
AbstractThe NTRC gene encodes a NADPH-dependent thioredoxin reductase with a joint thioredoxin domain, exclusive of photosynthetic organisms. An updated search shows that although most species harbor a single copy of the NTRC gene, two copies were identified in different species of the genus Solanum, Glycine max and the moss Physcomitrella patens. The phylogenetic analysis of NTRCs from different sources produced a tree with the major groups of photosynthetic organisms: cyanobacteria, algae and land plants, indicating the evolutionary success of the NTRC gene among photosynthetic eukaryotes. An event of alternative splicing affecting the expression of the NTRC gene was identified, which is conserved in seed plants but not in algae, bryophytes and lycophytes. The alternative splicing event results in a transcript with premature stop codon, which would produce a truncated form of the enzyme. The standard splicing/alternative splicing (SS/AS) transcripts ratio was higher in photosynthetic tissues from Arabidopsis, Brachypodium and tomato, in line with the higher content of the NTRC polypeptide in these tissues. Moreover, environmental stresses such as cold or high salt affected the SS/AS ratio of the NTRC gene transcripts in Brachypodium seedlings. These results suggest that the alternative splicing of the NTRC gene might be an additional mechanism for modulating the content of NTRC in photosynthetic and non-photosynthetic tissues of seed plants.
URIhttp://hdl.handle.net/10261/156019
DOI10.1016/j.plantsci.2017.02.001
Identifiersdoi: 10.1016/j.plantsci.2017.02.001
issn: 1873-2259
Appears in Collections:(IBVF) Artículos
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