Ultraviolet B-Sensitive Rice Cultivar Deficient in Cyclobutyl Pyrimidine Dimer Repair
Open accessAbstract
Repair of cyclobutyl pyrimidine dimers (CPDs) in DNA is essential in most organisms to prevent biological damage by ultraviolet (UV) light. In higher plants tested thus far, UV-sensitive strains had higher initial damage levels or deficient repair of nondimer DNA lesions but normal CPD repair. This suggested that CPDs might not be important for biological lesions. The photosynthetic apparatus has also been proposed as a critical target. We have analyzed CPD induction and repair in the UV-sensitive rice (Oryza sativa L.) cultivar Norin 1 and its close relative UV-resistant Sasanishiki using alkaline agarose gel electrophoresis. Norin 1 is deficient in cyclobutyl pyrimidine dimer photoreactivation and excision; thus, UV sensitivity correlates with deficient dimer repair.
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CPDs are excised from nuclear DNA of Daucus carota and Wolffia microscopia at damage-dependent rates comparable to those in animal cells.
“Furthermore, CPDs were found to be excised from the nuclear DNA of Daucus carota and Wolffia microscopia at rates dependent on damage levels and comparable to those in animal cells [205, 275].”
From Molecular Mechanisms of Ultraviolet Radiation‐Induced DNA Damage and Repair (2010) · cites this paper as [275]
The Results (page not supplied) report CPD excision in carrot protoplasts and Wolffia microscopica. They describe damage-dependent excision rates for alfalfa and soybean, not for carrot or Wolffia, and do not compare either species’ rates with animal cells or specify nuclear DNA for them. (LLM, conf=0.87)
Experimental — accuracy not yet measuredNER occurs in Glycine max and Oryza sativa cultivars, as indicated by reduced nuclear CPD frequency.
“Based on the reduction of nuclear CPD frequency, the presence of NER has been reported to occur in several plants such as Glycine max and cultivars of Oryza sativa [274, 275].”
From Molecular Mechanisms of Ultraviolet Radiation‐Induced DNA Damage and Repair (2010) · cites this paper as [275]
The Results report declining CPD levels through excision repair in the rice cultivars Sasanishiki and Norin 1, and also describe excision in soybean (Glycine max) at high initial CPD levels. However, the paper measures DNA isolated from leaves and does not identify the measured CPDs specifically as nuclear, so that qualifier is not established. (LLM, conf=0.82)
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References 41 · Cited by 76
- Authors
- Hidema, J., Kumagai, T., Sutherland, J. C., & Sutherland, B. M.
- Affiliations
- Tohoku University (JP)
- Brookhaven National Laboratory (US)
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-01-01
- Volume
- 113
- Issue
- 1
- Pages
- 39-44
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- PMC
- PMC158113
- OpenAlex
- W1502920869
- Cited by
- 76
- References
- 41
- Citations by year
- 2026: 1 · 2025: 2 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 1 · 2016: 5 · 2015: 3 · 2014: 2 · 2012: 3
- FWCI
- 2.02
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- PLANT PHYSIOLOGY (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Energy
- Japan Society for the Promotion of Science
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Keywords
- DNA repair, rice, Sasanishiki, photoreactivation, excision repair, UV-induced DNA damage, photosynthetic apparatus damage
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