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FEBS Lett. 2006 Sep 4;580(20):4851-6. Epub 2006 Aug 8.

The AtNFXL1 gene encodes a NF-X1 type zinc finger protein required for growth under salt stress.

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Universität Potsdam, Institut für Biochemie und Biologie, Genetik, Karl-Liebknecht-Strasse 24-25, Haus 26, 14476 Golm, Germany.


The human NF-X1 protein and homologous proteins in eukaryotes represent a class of transcription factors which are characterised by NF-X1 type zinc finger motifs. The Arabidopsis genome encodes two NF-X1 homologs, which we termed AtNFXL1 and AtNFXL2. Growth and survival was impaired in atnfxl1 knock-out mutants and AtNFXL1-antisense plants under salt stress in comparison to wild-type plants. In contrast, 35S: :AtNFXL1 plants showed higher survival rates. The AtNFXL2 protein potentially plays an antagonistic role. The Arabidopsis NF-X1 type zinc finger proteins likely are part of regulatory mechanisms, which protect major processes such as photosynthesis.

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