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Plant Physiology Preview Published on February 11, 2009; 10.1104/pp.108.134874
OPEN ACCESS ARTICLE
Received December 23, 2008 AtMyb41 regulates transcriptional and metabolic responses to osmotic stress in Arabidopsis thaliana (L.)
Max-Planck Institute for Molecular Plant Physiology, Wissenschaftspark Golm, Am Muhlenberg 1, Potsdam-Golm, 14476, Germany; Samuel Roberts Noble Foundation, 2510 Sam Noble Pky., Ardmore, OK 73401, USA * Corresponding author; email: mudvardi{at}noble.org.
Myb transcription factors have been implicated in a wide variety of plant-specific processes, including secondary metabolism, cell-shape determination, cell differentiation, and stress responses. Very recently, AtMyb41 was described as a gene transcriptionally-regulated in response to salinity, desiccation, cold and ABA. The corresponding transcription factor was suggested to control stress-responses linked to cell wall modifications. In this work, we have characterized AtMyb41 further by subjecting independent AtMyb41 over-expressing lines to detailed transcriptome and metabolome analysis. Our molecular data indicate that AtMyb41 is involved in distinct cellular processes, including control of primary metabolism and negative regulation of short-term transcriptional responses to osmotic-stress.
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