| Literature DB >> 6930537 |
P Nicolas, Y Hussein, P Heizmann, V Nigon.
Abstract
Studies of nuclear and chloroplastic-DNA repair after ultraviolet irradiation of Euglena gracilis show that photoreactivation is very efficient at both the nuclear and chloroplastic level. Liquid-holding or split-dose experiments and treatment with caffeine reveal, furthermore, that dark-repair is very efficient in nuclear DNA but not in chloroplastic DNA (ctDNA). The possibility of a chloroplastic dark-repair of restricted efficiency is discussed. Determination of chloroplastic DNA content by reassociation kinetics indicates that an important degradation follows UV irradiation during liquid holding in the dark.Entities:
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Year: 1980 PMID： 6930537 DOI： 10.1007/bf00337862
Source DB: PubMed Journal: Mol Gen Genet ISSN： 0026-8925