Cytosolic acetyl-CoA promotes histone acetylation predominantly at H3K27 in Arabidopsis Journal Articles uri icon

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abstract

  • Acetyl-coenzyme A (acetyl-CoA) is a central metabolite and the acetyl source for protein acetylation, particularly histone acetylation that promotes gene expression. However, the effect of acetyl-CoA levels on histone acetylation status in plants remains unknown. Here, we show that malfunctioned cytosolic acetyl-CoA carboxylase1 (ACC1) in Arabidopsis leads to elevated levels of acetyl-CoA and promotes histone hyperacetylation predominantly at lysine 27 of histone H3 (H3K27). The increase of H3K27 acetylation (H3K27ac) is dependent on adenosine triphosphate (ATP)-citrate lyase which cleaves citrate to acetyl-CoA in the cytoplasm, and requires histone acetyltransferase GCN5. A comprehensive analysis of the transcriptome and metabolome in combination with the genome-wide H3K27ac profiles of acc1 mutants demonstrate the dynamic changes in H3K27ac, gene transcripts and metabolites occurring in the cell by the increased levels of acetyl-CoA. This study suggests that H3K27ac is an important link between cytosolic acetyl-CoA level and gene expression in response to the dynamic metabolic environments in plants.

authors

  • Chen, Chen
  • Li, Chenlong
  • Wang, Ying
  • Renaud, Justin
  • Tian, Gang
  • Kambhampati, Shrikaar
  • Saatian, Behnaz
  • Nguyen, Vi
  • Hannoufa, Abdelali
  • Marsolais, Frédéric
  • Yuan, Ze-Chun
  • Yu, Kangfu
  • Austin, Ryan S
  • Liu, Jun
  • Kohalmi, Susanne E
  • Wu, Keqiang
  • Huang, Shangzhi
  • Cui, Yuhai

publication date

  • October 2017