IHB OpenIR  > 水环境工程研究中心  > 期刊论文
Enhanced Resistance to UV-B Radiation in Anabaena sp PCC 7120 (Cyanophyceae) by Repeated Exposure
Qin, Hongjie1,2; Li, Dunhai1; Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
2014-07-01
Source PublicationCURRENT MICROBIOLOGY
ISSN0343-8651
Volume69Issue:1Pages:1-9
AbstractIn natural habitats, organisms especially phytoplankton are not always continuously subjected to ultraviolet-B radiation (UVBR). By simulation of the natural situation, the N-2-fixing cyanobacterium Anabaena sp. PCC 7120 was subjected to UV-B exposure and recovery cycles. A series of morphological and physiological changes were observed in Anabaena sp. PCC 7120 under repeated UVBR when compared with controls. Such as the breakage of filaments, intervals between heterocysts, heterocyst frequency, total carbohydrate, and carotenoids were increased, while the nitrogenase activity and photosynthetic activity were inhibited by repeated UVBR; however, these activities could recover when UV-B stress was removed. Unexpectedly, the over-compensatory growth was observed at the end of the second round of exposure and recovery cycle. Our results showed that discontinuous UVBR could increase the growth rate and the tolerance as well as repair capacity of Anabaena sp. PCC 7120. These results indicate that moderate UVBR may increase the growth of cyanobacteria in natural habitats.; In natural habitats, organisms especially phytoplankton are not always continuously subjected to ultraviolet-B radiation (UVBR). By simulation of the natural situation, the N-2-fixing cyanobacterium Anabaena sp. PCC 7120 was subjected to UV-B exposure and recovery cycles. A series of morphological and physiological changes were observed in Anabaena sp. PCC 7120 under repeated UVBR when compared with controls. Such as the breakage of filaments, intervals between heterocysts, heterocyst frequency, total carbohydrate, and carotenoids were increased, while the nitrogenase activity and photosynthetic activity were inhibited by repeated UVBR; however, these activities could recover when UV-B stress was removed. Unexpectedly, the over-compensatory growth was observed at the end of the second round of exposure and recovery cycle. Our results showed that discontinuous UVBR could increase the growth rate and the tolerance as well as repair capacity of Anabaena sp. PCC 7120. These results indicate that moderate UVBR may increase the growth of cyanobacteria in natural habitats.
SubtypeArticle
KeywordUltraviolet-radiation Heterocyst Development Photosynthesis Temperature Cyanobacteria Nitrogen Plants Damage Ozone Eutrophication
Department[Qin, Hongjie; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China; [Qin, Hongjie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
DOI10.1007/s00284-014-0543-6
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02]
Indexed BySCI
Language英语
WOS Research AreaMicrobiology
WOS SubjectMicrobiology
WOS IDWOS:000336396500001
WOS KeywordULTRAVIOLET-RADIATION ; HETEROCYST DEVELOPMENT ; PHOTOSYNTHESIS ; TEMPERATURE ; CYANOBACTERIA ; NITROGEN ; PLANTS ; DAMAGE ; OZONE ; EUTROPHICATION
Funding OrganizationNational Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02] ; National Major Program of Water Body Pollution Control and Remediation [2012ZX07103003-02]
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20061
Collection水环境工程研究中心_期刊论文
Corresponding AuthorLi, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qin, Hongjie,Li, Dunhai,Li, DH . Enhanced Resistance to UV-B Radiation in Anabaena sp PCC 7120 (Cyanophyceae) by Repeated Exposure[J]. CURRENT MICROBIOLOGY,2014,69(1):1-9.
APA Qin, Hongjie,Li, Dunhai,&Li, DH .(2014).Enhanced Resistance to UV-B Radiation in Anabaena sp PCC 7120 (Cyanophyceae) by Repeated Exposure.CURRENT MICROBIOLOGY,69(1),1-9.
MLA Qin, Hongjie,et al."Enhanced Resistance to UV-B Radiation in Anabaena sp PCC 7120 (Cyanophyceae) by Repeated Exposure".CURRENT MICROBIOLOGY 69.1(2014):1-9.
Files in This Item:
File Name/Size DocType Version Access License
Enhanced Resistance (737KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Qin, Hongjie]'s Articles
[Li, Dunhai]'s Articles
[Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Qin, Hongjie]'s Articles
[Li, Dunhai]'s Articles
[Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Qin, Hongjie]'s Articles
[Li, Dunhai]'s Articles
[Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Enhanced Resistance to UV-B Radiation in Anabaena sp PCC 7120 (Cyanophyceae) by Repeated Exposure.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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