ArticleThe Plant cell2023
Functional importance and divergence of plant apurinic/apyrimidinic endonucleases in somatic and meiotic DNA repair.
Article in The Plant cell, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 10 citations in OpenAlex.
- Article
- Division of labor: OEX1 and POL1A/POL1B are partial derivatives of prokaryotic DNA polymerase required for mitochondrial genome maintenance in plants.The Plant cell · 2025Article
- A nuclear-encoded endonuclease governs the paternal transmission of mitochondria in Cucumis plants.Nature communications · 2025Article
- Divergent evolution of opposite base specificity and single-stranded DNA activity in animal and plant AP endonucleases.Nucleic acids research · 2025Article
- The chromatin remodeler ERCC6 and the histone chaperone NAP1 are involved in apurinic/apyrimidinic endonuclease-mediated DNA repair.The Plant cell · 2024Article
- Base Excision DNA Repair in Plants:International journal of molecular sciences · 2023Review
- Translational control of SOG1 expression in response to replication stress in Arabidopsis.Stress biology · 2023Article
- Transcriptome analysis provides insight into the regulatory mechanisms underlying pollen germination recovery at normal high ambient temperature in wild banana (Frontiers in plant science · 2023Article
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Authors and funding
13 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Apurinic/apyrimidinic (AP) sites are one of the most abundant DNA lesions and are mainly repaired by AP endonucleases (APEs). While most eukaryotic genomes encode two APEs, plants usually possess three APEs, namely APE1L, APE2, and ARP. To date, the biological relevance and functional divergence of plant APEs are unclear. Here, we show that the three plant APEs have ancient origins, with the APE1L clade being plant-specific. In Arabidopsis thaliana, simultaneously mutating APE1L and APE2, but not ARP alone or in combination with either APE1L or APE2, results in clear developmental defects linked to genotoxic stress. Genetic analyses indicated that the three plant APEs have different substrate preferences in vivo. ARP is mainly responsible for AP site repair, while APE1L and APE2 prefer to repair 3'-blocked single-stranded DNA breaks. We further determined that APEs play an important role in DNA repair and the maintenance of genomic integrity in meiotic cells. The ape1l ape2 double mutant exhibited a greatly enhanced frequency of sporulation 1 (SPO11-1)-dependent and SPO11-1-independent double-stranded DNA breaks. The DNA damage response (DDR) was activated in ape1l ape2 to trigger pollen abortion. Our findings suggest functional divergence of plant APEs and reveal important roles of plant APEs during vegetative and reproductive development.
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