Mechanistic role of DNA methylation in multigenerational IR-stress response

InferenceChain·nasa

Explains how MET1-driven CG methylation and DNA methylation-mediated enrichment of RNA splicing, DNA repair, and stress-related processes contribute to inheritable plant responses to ionising radiation across generations. Integrates the upregulation of methyltransferases, downstream GO-term enrichments, and the stability of CG methylation.

Confidence

80%

◑partialactivecomplexity: mid

Reasoning Steps (3)

CG methylation stability and generational inheritanceStep 1

DNA methylation drives enrichment of stress adaptation GO termsStep 2

Hypermethylation of DMRs increases genome stability under IRStep 3

Source

Synthesis for current paper

Connections (6)

MET1 implicated in CG methylation maintenance and IR-stress responseAssociation

MET1, CMT3, and SUVH5 upregulated by ionising radiationAssociation

IR-induced DNA methylation enriches RNA splicing and DNA repair processesAssociation

DNA methylation regulates DNA repair responseAssociation

DNA methylation regulates plant response to ionising radiationAssociation

DMRs often hypermethylated in transposons after radiationAssociation

Evidence

“Groot et al. (2016) study the effects of multigenerational stress exposure and offspring environment, showing altered expression and persistence of transgenerational effects in Arabidopsis thaliana.”

(2016). Effects of Multi-generational stress exposure and offspring environment on the expression and persistence of transgenerational effects in Arabidopsis thaliana. PLoS One 11:e0151566. doi:10.1371/journal.pone.0151566 ↗