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Iron and FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT)-dependent regulation of proteins and genes in Arabidopsis thaliana roots.
Proteomics 15, 3030-3047 (2015)
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Iron is an essential micronutrient for plants, and iron deficiency requires a variety of physiological adaptations. FIT (FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR) is essential for the regulation of iron uptake in Arabidopsis thaliana roots. FIT is transcriptionally as well as post-transcriptionally regulated in response to iron supply. To investigate to which extent post-transcriptional regulation upon iron deficiency applies to proteins and to determine the dependency on FIT, we performed a parallel proteomic and transcriptomic study with wild-type, a fit knock-out mutant and a FIT over-expressing Arabidopsis line. Among 92 proteins differentially regulated by iron and/or FIT, we identified 30 proteins, which displayed differential regulation at the transcriptional level. 11 protein spots were regulated in at least one of the data points even contrary to the respective genes dependent on FIT. We found 10 proteins in at least two forms. The analysis of functional classification showed enriched Gene Ontology (GO) terms among the post-transcriptionally regulated genes and of proteins, that were down-regulated or absent in the fit knock-out mutant. Taken together, we provide evidence for iron and FIT-dependent post-transcriptional regulation in iron homeostasis in A. thaliana.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Arabidopsis, Fit ; Iron ; Post-transcriptional Regulation ; Proteome ; Transcription
ISSN (print) / ISBN 1615-9853
Quellenangaben Band: 15, Heft: 17, Seiten: 3030-3047
Begutachtungsstatus Peer reviewed