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Findings from Swiss Federal Institute of Technology Provides New Data on Molecular Biology

June 17, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Researchers detail new data in Life Science Research. According to news originating from Zurich, Switzerland, by NewsRx correspondents, research stated, "Maize, despite being thermophyllic due to its tropical origin, demonstrates high intraspecific diversity in cold-tolerance. To search for molecular mechanisms of this diversity, transcriptomic response to cold was studied in two inbred lines of contrasting cold-tolerance."

Our news journalists obtained a quote from the research from the Swiss Federal Institute of Technology, "Microarray analysis was followed by extensive statistical elaboration of data, literature data mining, and gene ontology-based classification. The lines used had been bred earlier specifically for determination of QTLs for cold-performance of photosynthesis. This allowed direct comparison of present transcriptomic data with the earlier QTL mapping results. Cold-treated (14 h at 8/6 A degrees C) maize seedlings of cold-tolerant ETH-DH7 and cold-sensitive ETH-DL3 lines at V3 stage showed strong, consistent response of the third leaf transcriptome: several thousand probes showed similar, statistically significant change in both lines, while only tens responded differently in the two lines. The most striking difference between the responses of the two lines to cold was the induction of expression of ca. twenty genes encoding membrane/cell wall proteins exclusively in the cold-tolerant ETH-DH7 line. The common response comprised mainly repression of numerous genes related to photosynthesis and induction of genes related to basic biological activity: transcription, regulation of gene expression, protein phosphorylation, cell wall organization. Among the genes showing differential response, several were close to the QTL regions identified in earlier studies with the same inbred lines and associated with biometrical, physiological or biochemical parameters."

According to the news editors, the research concluded: "These transcripts, including two apparently non-protein-coding ones, are particularly attractive candidates for future studies on mechanisms determining divergent cold-tolerance of inbred maize lines."

For more information on this research see: Genome-wide transcriptomic analysis of response to low temperature reveals candidate genes determining divergent cold-sensitivity of maize inbred lines. Plant Molecular Biology, 2014;85(3):317-331. Plant Molecular Biology can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer -; Plant Molecular Biology -

The news correspondents report that additional information may be obtained from A. Sobkowiak, ETH, Dept. of Environm Syst Sci, CH-8092 Zurich, Switzerland. Additional authors for this research include M. Jonczyk, E. Jarochowska, P. Biecek, J. Trzcinska-Danielewicz, J. Leipner, J. Fronk and P. Sowinski (see also Life Science Research).

Keywords for this news article include: Zurich, Europe, Switzerland, Life Science Research

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Source: Life Science Weekly

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