Convergent energy and stress signaling.
Plants are constantly confronted by multiple types of stress. Despite their distinct origin and mode of perception, nutrient deprivation and most stresses have an impact on the overall energy status of the plant, leading to convergent downstream responses that include largely overlapping transcriptional patterns. The emerging view is that this transcriptome reprogramming in energy and stress signaling is partly regulated by the evolutionarily conserved energy sensor protein kinases, SNF1 (sucrose non-fermenting 1) in yeast, AMPK (AMP-activated protein kinase) in mammals and SnRK1 (SNF1-related kinase 1) in plants. Upon sensing the energy deficit associated with stress, nutrient deprivation and darkness, SnRK1 triggers extensive transcriptional changes that contribute to restoring homeostasis, promoting cell survival and elaborating longer-term responses for adaptation, growth and development.
Baena-González
Elena
E
Department of Genetics, Harvard Medical School, Boston, MA 02114, USA.
Sheen
Jen
J
D000222:Adaptation, Physiological; D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D003624:Darkness; D004734:Energy Metabolism; D018506:Gene Expression Regulation, Plant; D006706:Homeostasis; D017346:Protein Serine-Threonine Kinases / Q000235:genetics / Q000378:metabolism*; D020239:Receptor Cross-Talk; D015398:Signal Transduction
D029681:Arabidopsis Proteins; D017346:Protein Serine-Threonine Kinases; C531469:At3g01090 protein, Arabidopsis