Nitric oxide coordinates histone acetylation and expression of genes involved in growth/development and stress response
Ageeva_Kieferle, A.; Georgii, E.; Winkler, B.; Ghirardo, A.; Albert, A.; Huether, P.; Mengel, A.; Becker, C.; Schnitzler, J.-P.; Durner, J.; Lindermayr, C.
Show abstract
Nitric oxide (NO) is a signaling molecule with multiple regulatory functions in plant physiology and stress response. Besides direct effects on the transcriptional machinery, NO can fulfill its signaling function via epigenetic mechanisms. We report that light intensity-dependent changes in NO correlate with changes in global histone acetylation (H3, H3K9 and H3K9/K14) in Arabidopsis thaliana wild-type leaves and that this correlation depends on S-nitrosoglutathione reductase and histone deacetylase 6. The activity of histone deacetylase 6 was sensitive to NO, which demonstrates that NO participates in regulation of histone acetylation. ChIP-seq and RNA-seq analyses revealed that NO is involved in the metabolic switch from growth and development to stress response. This coordinating function of NO might be of special importance in adaptation to a changing environment and could therefore be a promising starting point to mitigating the negative effects of climate change on plant productivity.
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