Ultraviolet B-sensitive rice cultivar deficient in cyclobutyl pyrimidine dimer repair
- 1. Tohoku Univ., Sendai (Japan)
- 2. Brookhaven National Lab., Upton, NY (United States)
Description
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. 38 refs., 3 figs
Additional details
Publishing Information
- Journal Title
- Plant Physiology (Bethesda)
- Journal Volume
- 113
- Journal Issue
- 1
- Journal Page Range
- p. 39-44.
- ISSN
- 0032-0889
- CODEN
- PLPHAY
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28073396
- Subject category
- S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
- Descriptors DEI
- BIOLOGICAL EFFECTS; DNA REPAIR; RICE; ULTRAVIOLET RADIATION
- Descriptors DEC
- BIOLOGICAL RECOVERY; BIOLOGICAL REPAIR; CEREALS; ELECTROMAGNETIC RADIATION; GRAMINEAE; LILIOPSIDA; MAGNOLIOPHYTA; PLANTS; RADIATIONS