Effects of three nanomaterials on growth, photosynthetic characteristics and production of reactive oxygen species of diatom Nitzschia Palea
Effects of three nanomaterials on growth, photosynthetic characteristics and production of reactive oxygen species of diatom Nitzschia Palea
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三种纳米材料对硅藻菱形藻生长、光合特性及活性氧产生的影响
DOI：
10.1080/02757540.2021.2023508
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发表时间：
2022-01
影响因子：
2.5
通讯作者：
Yawen Fan
中科院分区：
文献类型：
--
作者：
Yang Cai;Weijie Mu;Kun Jia;Di Huo;Yuhang Wang;Yawen Fan
摘要近几十年来，随着纳米材料向水中的排放，纳米材料对水生生物的危害日益加剧。在本研究中，我们从单独和联合两个方面分析了二氧化钛、氧化锌和多壁碳纳米管对内层硅藻的毒性效应。短期暴露(96 h)后，测定细胞密度、叶绿素a、丙二醛、超氧化物歧化酶、过氧化氢酶、总蛋白含量和形态结构的变化。结果表明：(1)随着纳米材料浓度的增加，贝壳蓝藻的生长受到抑制，(2)贝壳蓝藻的叶绿素a含量对3种单独的纳米材料较为敏感，(3)低浓度的纳米材料促进了贝壳蓝藻的丙二醛含量，高浓度则抑制了贝壳蓝藻的丙二醛含量，(4)贝壳蓝藻蛋白质含量先升后降，说明纳米材料胁迫抑制了硅藻蛋白质的合成，并呈剂量-效应关系；(5)与对照相比，纳米材料暴露后，内花莲的超氧化物歧化酶活性显著受到抑制，过氧化氢酶活性显著降低。本研究结果为藻类纳米毒理学研究提供了数据，为研究纳米材料对淡水微藻的毒性提供了理论依据。
ABSTRACT Harmful effect of nanomaterials on aquatic organisms has accelerated in recent decades due to the growth emission of nanomaterials into water. In the present study, we analysed the toxic effects of TiO2, ZnO and MWCTN on diatoms Nitzschia palea in both individual and a combined way. After a short-term (96 h) exposure, the changes of cell density, chlorophyll a, MDA, SOD, CAT, total protein content and morphological structure were determined. Our results showed that: (1) The growth of N. palea was inhibited with the increase of concentration of nanomaterials; (2) The chlorophyll a content of N. palea was sensitive to these three individual nanomaterials; (3) Low concentration of nanomaterials promoted the MDA content in N. palea, but high concentration inhibited it; (4) The protein content of N. palea increased first and then decreased, indicating that nanomaterial stress inhibited diatom protein synthesis and showed dose-effect relationship; (5) After nanomaterial exposure, the SOD enzyme activity of N. palea was significantly inhibited, the CAT enzyme activity showed significantly decreased after exposure, comparing with control. The results of this study provide data for the study of algae nano-toxicology and provide a theoretical basis for the study of the toxicity of nanomaterials to freshwater microalgae.
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影响因子：
2.5
作者：
Jia Kun;Sun Chenglong;Wang Yulin;Li Xin;Mu Weijie;Fan Yawen
通讯作者：
Fan Yawen
影响因子：
10
作者：
Tsugita M;Morimoto N;Nakayama M
通讯作者：
Nakayama M
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影响因子：
11.4
作者：
Yu Jing;Liu Su;Wu Bing;Shen Zhuoyan;Cherr Gary N.;Zhang Xu-xiang;Li Mei
通讯作者：
Li Mei
DOI：
10.1016/j.ejar.2019.01.001
发表时间：
2019-03
期刊：
The Egyptian Journal of Aquatic Research
影响因子：
--
作者：
M. A. El-Atti;M. Desouky;A. Mohamadien;R. .. Said
通讯作者：
M. A. El-Atti;M. Desouky;A. Mohamadien;R. .. Said
影响因子：
8.9
作者：
Botta, Celine;Labille, Jerome;Bottero, Jean-Yves
通讯作者：
Bottero, Jean-Yves