ArticlePloS one2019
Mutation in DDM1 inhibits the homology directed repair of double strand breaks.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Efficient enhancement of the antimicrobial activity of Chlamydomonas reinhardtii extract by transgene expression and molecular modification using ionizing radiation.Biotechnology for biofuels and bioproducts · 2024Article
- Molecular basis of chromatin remodelling by DDM1 involved in plant DNA methylation.Nature plants · 2024Article
- Article
- Extrachromosomal circular DNA and structural variants highlight genome instability in Arabidopsis epigenetic mutants.Nature communications · 2023Article
- Chromatin remodeling of histone H3 variants underlies epigenetic inheritance of DNA methylation.bioRxiv : the preprint server for biology · 2023Article
- Seminars in cell and development biology on histone variants remodelers of H2A variants associated with heterochromatin.Seminars in cell & developmental biology · 2023Review
- DDM1-Mediated TE Silencing in Plants.Plants (Basel, Switzerland) · 2023Review
- Application of Gamma Ray-Responsive Genes for Transcriptome-Based Phytodosimetry in Rice.Plants (Basel, Switzerland) · 2021Article
- Chromatin Remodeling and Epigenetic Regulation in Plant DNA Damage Repair.International journal of molecular sciences · 2019Review
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In all organisms, DNA damage must be repaired quickly and properly, as it can be lethal for cells. Because eukaryotic DNA is packaged into nucleosomes, the structural units of chromatin, chromatin modification is necessary during DNA damage repair and is achieved by histone modification and chromatin remodeling. Chromatin remodeling proteins therefore play important roles in the DNA damage response (DDR) by modifying the accessibility of DNA damage sites. Here, we show that mutation in a SWI2/SNF2 chromatin remodeling protein (DDM1) causes hypersensitivity in the DNA damage response via defects in single-strand annealing (SSA) repair of double-strand breaks (DSBs) as well as in the initial steps of homologous recombination (HR) repair. ddm1 mutants such as ddm1-1 and ddm1-2 exhibited increased root cell death and higher DSB frequency compared to the wild type after gamma irradiation. Although the DDM1 mutation did not affect the expression of most DDR genes, it did cause substantial decrease in the frequency of SSA as well as partial inhibition in the γ-H2AX and Rad51 induction, the initial steps of HR. Furthermore, global chromatin structure seemed to be affected by DDM1 mutations. These results suggest that DDM1 is involved in the homology directed repair such as SSA and HR, probably by modifying chromatin structure.
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