Oxidative balance in macroalgae from Antarctic waters. Possible role of Fe
Oxidative balance in macroalgae from Antarctic waters. Possible role of Fe
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DOI：
10.1016/j.jembe.2016.10.018
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发表时间：
2017-01-01
影响因子：
2
通讯作者：
Puntarulo, Susana
中科院分区：
文献类型：
--
作者：
Mariela Gonzalez, Paula;Deregibus, Dolores;Puntarulo, Susana
这项工作的假设是，暴露于不同的非生物因素在两个网站具有不同的沉积物和铁输入（Penon德佩斯卡：低影响;岛D：高影响的两个地区在波特湾，国王乔治岛，南极洲）影响的生理和氧化的Gigartina skottsbernesia和Himantothallus grandifolius。每日代谢碳平衡显着较低，在两个大型藻类从岛D相比，佩农德佩斯卡。脂质自由基（LR.）含量在G.从D岛收集的skottsbertoses与Person de Pesca相比。H.与Penon de Pesca相比，grandifolius在Island D中显示出显著较低的值。G中β-胡萝卜素（beta-C）含量显着较低。从D岛的skottsberlanes相比，佩农德佩斯卡，和比率LR。/与Penon de Pesca相比，β-C在Island D样品中显示出6倍的增加。另一方面，H.大叶黄杨在两个区域之间没有显著差异。LR./与Penon de Pesca相比，D岛的β-C含量比率明显较低（26%）。总铁含量显着较高的两个大型藻类从D岛相比，从Penon德佩斯卡的样品。结果表明，G. skottsbernovel建议氧化细胞平衡的变化，可能与D岛的环境铁含量高于Penon de Pesca有关。H.桔梗似乎更好地适应环境条件，特别是通过更高的抗氧化能力来科普氧化应激。(C)2016爱思唯尔B. V.保留所有权利。
The hypothesis of this work was that exposure to diverse abiotic factors in two sites with different sediment and iron input (Penon de Pesca: low impact; Island D: high impact both areas in Potter Cove, King George Island, Antarctica) affects the physiological and oxidative profile of Gigartina skottsbergii and Himantothallus grandifolius. Daily metabolic carbon balance was significantly lower in both macroalgae from Island D compared to Penon de Pesca. Lipid radical (LR.) content was significantly higher in G. skottsbergii collected from Island D compared to Person de Pesca. In contrast, H. grandifolius showed significantly lower values in Island D compared to Penon de Pesca. The beta-carotene (beta-C) content was significantly lower in G. skottsbergii from Island D compared to Penon de Pesca, and the ratio LR./beta-C showed a 6-fold increase in Island D samples compared to Penon de Pesca. On the other hand, p-c content in H. grandifolius showed no significant differences between both areas. The LR./beta-C content ratio in this alga was significantly lower (26%) in Island D as compared to Penon de Pesca. Total iron content was significantly higher in both macroalgae from Island D compared to samples from Penon de Pesca. Results with G. skottsbergii suggested changes in the oxidative cellular balance, probably related to the higher environmental iron in Island D as compared to Penon de Pesca. The species H. grandifolius seems to be better adapted to the environmental conditions especially through a higher antioxidant capacity to cope with oxidative stress. (C) 2016 Elsevier B.V. All rights reserved.