UV-induced DNA damage in Cyclops abyssorum tatricus populations from clear and turbid alpine lakes
UV-induced DNA damage in Cyclops abyssorum tatricus populations from clear and turbid alpine lakes
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清澈和浑浊高山湖泊中的深渊独眼巨人种群中紫外线引起的 DNA 损伤
DOI：
10.1093/plankt/fbt109
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发表时间：
2013
影响因子：
2.1
通讯作者：
Sommaruga
中科院分区：
文献类型：
--
作者：
Tartarotti;Chakrabarti;Trattner;Steinberg;C. E. W;Sommaruga
清澈的高山湖泊中的浮游动物在高水平的太阳紫外线辐射（UVR）下茁壮成长，但在冰川混浊的湖泊中，它们更容易受到这种破坏性辐射的保护。在这里，我们目前的结果与独眼巨人tatricusto评估紫外线诱导的DNA损伤和修复过程中使用彗星试验。桡足类从三个不同的紫外线透明度的高山湖泊，从明确的冰川混浊，并暴露于人工紫外线辐射。此外，在试验人群中估计了光保护水平[真菌孢子素样氨基酸（MAA）和亲脂性抗氧化能力]。相似的紫外线诱导的DNA损伤水平之间观察到的桡足类从所有的湖泊，但背景DNA损伤（时间零和黑暗的控制）是最低的桡足类从冰川混浊的湖泊，导致较高的相对DNA损伤积累。大多数DNA链断裂在黑暗中恢复后被修复。低MAA浓度被发现在桡足类从冰川混浊的湖泊，而最高的水平被观察到的人口从最紫外线透明的湖泊。然而，最高的亲脂性抗氧化能力，测量中的桡足类从湖中间的紫外线透明度。光保护和修复DNA损伤的能力，从而减少紫外线引起的损伤，是浮游动物对冰川退缩引起的水透明度变化的反应机制的一部分。
Zooplankton from clear alpine lakes thrive under high levels of solar UV radiation (UVR), but in glacially turbid ones they are more protected from this damaging radiation. Here, we present results from experiments done withCyclops abyssorum tatricusto assess UV-induced DNA damage and repair processes using the comet assay. Copepods were collected from three alpine lakes of differing UV transparency ranging from clear to glacially turbid, and exposed to artificial UVR. In addition, photoprotection levels [mycosporine-like amino acids (MAAs) and lipophilic antioxidant capacity] were estimated in the test populations. Similar UV-induced DNA damage levels were observed among the copepods from all lakes, but background DNA damage (time zero and dark controls) was lowest in the copepods from the glacially turbid lake, resulting in a higher relative DNA damage accumulation. Most DNA strand breaks were repaired after recovery in the dark. Low MAA concentrations were found in the copepods from the glacially turbid lake, while the highest levels were observed in the population from the most UV transparent lake. However, the highest lipophilic antioxidant capacities were measured in the copepods from the lake with intermediate UV transparency. Photoprotection and the ability to repair DNA damage, and consequently reducing UV-induced damage, are part of the response mechanisms in zooplankton to changes in water transparency caused by glacier retreat.
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DOI：
10.1016/j.mrrev.2008.03.001
发表时间：
2009-01-01
期刊：
Mutation research
影响因子：
--
作者：
Frenzilli, G;Nigro, M;Lyons, B P
通讯作者：
Lyons, B P
夏季阳光对草虾 (Palaemonetes pugio) 胚胎 DNA 的损伤，随后在黑暗中进行 DNA 修复
DOI：
--
发表时间：
2000
期刊：
影响因子：
--
作者：
G. B. Kim;R. Lee;D. Mitchell
通讯作者：
D. Mitchell
影响因子：
2.8
作者：
Dietrich, GJ;Szpyrka, A;Ciereszko, A
通讯作者：
Ciereszko, A
智利湖泊枝角动物对 UV-B 光的差异耐受性和光酶修复
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
R. Ramos‐Jiliberto;Patricia Dauelsberg;L. Zúñiga
通讯作者：
L. Zúñiga
影响因子：
4.4
作者：
Sommaruga, R;Oberleiter, A;Psenner, R
通讯作者：
Psenner, R