Comparison of ultraviolet-induced genotoxicity detected by random amplified polymorphic DNA with chlorophyll fluorescence and growth in a marine macroalgae, Palmaria palmata

被引:134
作者
Atienzar, FA [1 ]
Cordi, B [1 ]
Donkin, ME [1 ]
Evenden, AJ [1 ]
Jha, AN [1 ]
Depledge, MH [1 ]
机构
[1] Univ Plymouth, PERC, Dept Biol Sci, Plymouth PL4 8AA, Devon, England
基金
英国惠康基金;
关键词
Palmaria palmata; macroalgae; UV-A and B; RAPD; genomic template stability; chlorophyll fluorescence; growth;
D O I
10.1016/S0166-445X(99)00100-9
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The random amplified polymorphic DNA (RAPD) technique was used to detect DNA damage in the sublittoral macroalgae Palmaria palmata (Rhodophyta) exposed to both ambient and elevated irradiances of UV-B (280-315 nm). To investigate the potential of this method in ecotoxicological assessments, the qualitative and quantitative modifications in RAPD profiles were compared with changes in a number of physiological and fitness parameters. RAPD detectable modifications in DNA profiles were observed in all UV exposed individuals compared with controls. Changes in chlorophyll fluorescence (F-v/F-m ratio), in vivo pigment absorptance, thallus growth and RAPD profiles, examined simultaneously. provided a sensitive measure of UV-induced toxicity. In conclusion, the application of the RAPD method in conjunction with other suitable physiological and fitness measurements, may prove to be a valuable tool for investigating the specific effects of genotoxic agents upon marine algal populations. Ultimately, this methodology may allow the ecotoxicological examination of the link between molecular alterations and measurable adverse effects at higher Levels of biological organisation. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1 / 12
页数:12
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