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  A Contribution to Identification of Novel Regulators of Plant Response to Sulfur Deficiency: Characteristics of a Tobacco Gene UP9C, Its Protein Product and the Effects of UP9C Silencing

Lewandowska, M., Wawrzynska, A., Moniuszko, G., Lukomska, J., Zientara, K., Piecho, M., et al. (2010). A Contribution to Identification of Novel Regulators of Plant Response to Sulfur Deficiency: Characteristics of a Tobacco Gene UP9C, Its Protein Product and the Effects of UP9C Silencing. Molecular Plant, 3(2), 347-360. doi:10.1093/mp/ssq007.

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Lewandowska, M.1, Author
Wawrzynska, A.1, Author
Moniuszko, G.1, Author
Lukomska, J.1, Author
Zientara, K.1, Author
Piecho, M.1, Author
Hodurek, P.1, Author
Zhukov, I.1, Author
Liszewska, F.1, Author
Nikiforova, V.2, Author              
Sirko, A.1, Author
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1External Organizations, ou_persistent22              
2System Integration, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753349              

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Free keywords: sulfate assimilation sulfur deficit tobacco arabidopsis transcription regulators gene expression arabidopsis-thaliana nitrogen-metabolism circular-dichroism nicotiana-tabacum coiled-coils expression sequence stress reveals network
 Abstract: Extensive changes in plant transcriptome and metabolome have been observed by numerous research groups after transferring plants from optimal conditions to sulfur (S) deficiency. Despite intensive studies and recent important achievements, like identification of SLIM1/EIL3 as a major transcriptional regulator of the response to S-deficiency, many questions concerning other elements of the regulatory network remain unanswered. Investigations of genes with expression regulated by S-deficiency stress encoding proteins of unknown function might help to clarify these problems. This study is focused on the UP9C gene and the UP9-like family in tobacco. Homologs of these genes exist in other plant species, including a family of four genes of unknown function in Arabidopsis thaliana (LSU1-4), of which two were reported as strongly induced by S-deficit and to a lesser extent by salt stress and nitrate limitation. Conservation of the predicted structural features, such as coiled coil region or nuclear localization signal, suggests that these proteins might have important functions possibly mediated by interactions with other proteins. Analysis of transgenic tobacco plants with silenced expression of UP9-like genes strongly argues for their significant role in regulation of plant response to S-deficit. Although our study shows that the UP9-like proteins are important components of such response and they might be also required during other stresses, their molecular functions remain a mystery.

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Language(s): eng - English
 Dates: 2010-02-122010
 Publication Status: Published in print
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 Identifiers: ISI: ISI:000276844600008
DOI: 10.1093/mp/ssq007
ISSN: 1674-2052 (Print) 1674-2052 (Linking)
URI: ://000276844600008 http://mplant.oxfordjournals.org/content/3/2/347.full.pdf
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Title: Molecular Plant
Source Genre: Journal
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Pages: - Volume / Issue: 3 (2) Sequence Number: - Start / End Page: 347 - 360 Identifier: -