AtMyb41 regulates transcriptional and metabolic responses to osmotic stress in Arabidopsis.
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 from Arabidopsis (Arabidopsis thaliana) was described as a gene transcriptionally regulated in response to salinity, desiccation, cold, and abscisic acid. 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-overexpressing 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.
Lippold
Felix
F
Max-Planck Institute for Molecular Plant Physiology, Potsdam-Golm 14476, Germany.
Sanchez
Diego H
DH
Musialak
Magdalena
M
Schlereth
Armin
A
Scheible
Wolf-Ruediger
WR
Hincha
Dirk K
DK
Udvardi
Michael K
MK
D000040:Abscisic Acid / Q000494:pharmacology; D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D005838:Genotype; D055442:Metabolome / Q000187:drug effects; D009997:Osmotic Pressure / Q000187:drug effects; D018520:Plant Shoots / Q000187:drug effects / Q000378:metabolism; D025341:Principal Component Analysis; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D036226:Seedlings / Q000187:drug effects / Q000235:genetics; D012965:Sodium Chloride / Q000494:pharmacology; D013312:Stress, Physiological / Q000187:drug effects; D013997:Time Factors; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*; D014158:Transcription, Genetic / Q000187:drug effects; D019076:Transgenes
D029681:Arabidopsis Proteins; C541274:Myb41 protein, Arabidopsis; D012333:RNA, Messenger; D014157:Transcription Factors; D012965:Sodium Chloride; D000040:Abscisic Acid