UV-B and Plant DNA：Damage and Repair

Abstract

Abstract: Stratospheric ozone depletion enhanced solar UV-B radiation reaching the earth surface, resulting in damaging to DNA of plant epidermal cells, induced cyclobutane pyrimidine dimmers (CPD) and 6-4 photoproducts. The sensitivity of plant DNA to UV-B was related with different UV-B radiation intensity and different plant cytoplast, and the dose-effect relationship was showed. Generally, the organisms could repair DNA damage induced by UV-B radiation. Plant could repair DNA damage induced by UV-B through many methods, mainly included light-repair, base excision repair, nucleotide excision repair and recombination repair etc. The reparation of DNA damage was positively related with UV-B radiation intensity，generally. The contents were reviewed in this paper involved DNA damage induced by UV-B, The sensitivity of plant DNA to UV-B radiation, reparation of DNA damage and further research keys.

He Yongmei, Zu Yanqun, Li Yuan. UV-B and Plant DNA：Damage and Repair[J]. Chinese Agricultural Science Bulletin, 2009, 25(14): 42-46.

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