IHB OpenIR  > 水环境工程研究中心  > 期刊论文
Toxicological effects of nanometer titanium dioxide (nano-TiO2) on Chlamydomonas reinhardtii
Chen, Lanzhou1,2; Zhou, Lina2; Liu, Yongding1; Deng, Songqiang2; Wu, Hao2; Wang, Gaohong1; Wang, GH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Fresh Water Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
2012-10-01
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume84Pages:155-162
AbstractThe toxicological effects of nanometer titanium dioxide (nano-TiO2) on a unicellular green alga Chlamydomonas reinhardtii were assessed by investigating the changes of the physiology and cyto-ultrastructure of this species under treatment. We found that nano-TiO2 inhibited photosynthetic efficiency and cell growth, but the content of chlorophyll a content in algae did not change, while carotenoid and chlorophyll b contents increased. Malondialdehyde (MDA) content reached maximum values after 8 h exposure and then decreased to a moderately low level at 72 h. Electron microscopy images indicated that as concentrations of nano-TiO2 increased, a large number of C. reinhardtii cells were noted to be damaged: the number of chloroplasts declined, various other organelles were degraded, plasmolysis occurred, and TiO2 nanoparticles were found to be located inside cell wall and membrane. It was also noted that cell surface was surrounded by TiO2 particles, which could present an obstacle to the exchange of substances between the cell and its surrounding environment. To sum up, the effect of nano-TiO2 on C. reinhardtii included cell surface aggregation, photosynthesis inhibition, lipid peroxidation and new protein synthesis, while the response of C. reinhardtii to nano-TiO2 was a rapid process which occurs during 24 h after exposing and may relate to physiological stress system to mitigate damage. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.; The toxicological effects of nanometer titanium dioxide (nano-TiO2) on a unicellular green alga Chlamydomonas reinhardtii were assessed by investigating the changes of the physiology and cyto-ultrastructure of this species under treatment. We found that nano-TiO2 inhibited photosynthetic efficiency and cell growth, but the content of chlorophyll a content in algae did not change, while carotenoid and chlorophyll b contents increased. Malondialdehyde (MDA) content reached maximum values after 8 h exposure and then decreased to a moderately low level at 72 h. Electron microscopy images indicated that as concentrations of nano-TiO2 increased, a large number of C. reinhardtii cells were noted to be damaged: the number of chloroplasts declined, various other organelles were degraded, plasmolysis occurred, and TiO2 nanoparticles were found to be located inside cell wall and membrane. It was also noted that cell surface was surrounded by TiO2 particles, which could present an obstacle to the exchange of substances between the cell and its surrounding environment. To sum up, the effect of nano-TiO2 on C. reinhardtii included cell surface aggregation, photosynthesis inhibition, lipid peroxidation and new protein synthesis, while the response of C. reinhardtii to nano-TiO2 was a rapid process which occurs during 24 h after exposing and may relate to physiological stress system to mitigate damage. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.
SubtypeArticle
KeywordNanometer Titanium Dioxide Chlamydomonas Reinhardtii Physiological Responses Toxicological Effects Electron Microscopy
Department[Chen, Lanzhou; Liu, Yongding; Wang, Gaohong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Fresh Water Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China; [Chen, Lanzhou; Zhou, Lina; Deng, Songqiang; Wu, Hao] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China
DOI10.1016/j.ecoenv.2012.07.019
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationChinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000308771900022
WOS KeywordCYANOBACTERIUM NOSTOC SP ; FRESH-WATER ; PSEUDOKIRCHNERIELLA-SUBCAPITATA ; SILVER NANOPARTICLES ; DUNALIELLA-TERTIOLECTA ; OXIDATIVE DAMAGE ; TIO2 PARTICLES ; GREEN-ALGAE ; TOXICITY ; NANOMATERIALS
Funding OrganizationChinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight ; Chinese Natural Science Foundation [30970688, 30970446]; National Major Programs of Water Body Pollution Control and Remediation [2009ZX07103-006, 2009ZX07104-005-02, 2008ZX07105-005]; Project of Chinese Manned Spaceflight
Citation statistics
Cited Times:92[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/17252
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWang, GH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Fresh Water Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Fresh Water Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China
Recommended Citation
GB/T 7714
Chen, Lanzhou,Zhou, Lina,Liu, Yongding,et al. Toxicological effects of nanometer titanium dioxide (nano-TiO2) on Chlamydomonas reinhardtii[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2012,84:155-162.
APA Chen, Lanzhou.,Zhou, Lina.,Liu, Yongding.,Deng, Songqiang.,Wu, Hao.,...&Wang, GH .(2012).Toxicological effects of nanometer titanium dioxide (nano-TiO2) on Chlamydomonas reinhardtii.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,84,155-162.
MLA Chen, Lanzhou,et al."Toxicological effects of nanometer titanium dioxide (nano-TiO2) on Chlamydomonas reinhardtii".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 84(2012):155-162.
Files in This Item:
File Name/Size DocType Version Access License
Toxicological effect(802KB) 开放获取--View Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, Lanzhou]'s Articles
[Zhou, Lina]'s Articles
[Liu, Yongding]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Lanzhou]'s Articles
[Zhou, Lina]'s Articles
[Liu, Yongding]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Lanzhou]'s Articles
[Zhou, Lina]'s Articles
[Liu, Yongding]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Toxicological effects of nanometer titanium dioxide (nano-TiO2) on Chlamydomonas reinhardtii.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.