IHB OpenIR  > 期刊论文
Short-term effects of solar ultraviolet radiation on the photochemical efficiency of Spirulina platensis in non-aerated and aerated cultures
Wu Hong-Yan; Gao Kun-Shan (ksgao@stu.edu.cn); Teruo Watanabe; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2005
Source PublicationActa Hydrobiologica Sinica
ISSN1000-3207
Volume29Issue:6Pages:673-677
AbstractContinuous depletion of the stratospheric ozone layer results in increasing solar ultraviolet radiation(UVR) reaching the earth's surface. Which has been considered to affect living organisms. Solar UVR may also affect a variety of physiological and biochemical processes in the economic cyanobacterium, Spirulina platensis. However, little has been documented on the aspect. The present study evaluated the short-term effects of UVR on photochemical efficiency of S. platensis in aerated and non-aerated cultures while exposing it to full-spectrum solar radiation(PAB), solar radiation depleted of UVB(PA) and solar radiation deprived of total UV(P:PAR).It was found that both UVR and PAR inhibited the photochemical efficiency during noontime(11:00-13:00), however, UVR+PAR(PAB) resulted in higher inhibition. In aerated cultures, PAR resulted in 11%similar to 20% compared to the initial value in the morning (07:00), UVR(PAB-P) brought about 9%similar to 31% extra photoinhibition. While in non-aerated cultures, the photochemical effciency could not be detected when exposed to UVR. The greatest inhibition was observed at noontime, and the recovery was achieved in late afternoon (17:00) in both the aerated and non-aerated cultures. UVR increased the ratio of carotenoids or phycocyanin to chlorophylla. Compared with PAB and P treatments, cells exposed to PA showed higher values of the pigment ratios, indicating a possibility that UVA may enhance the synthesis of carotenoids and phyocyanin. Although S. platensis was negatively affected by UVR, it tended to develop mechanisms counteracting the damaging effects of UVR during this short-term exposure period, such as down-regulation of the photosynthetic activity of accumulation of the carotenoids.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18459
Collection期刊论文
Corresponding AuthorWu Hong-Yan; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wu Hong-Yan,Gao Kun-Shan ,Teruo Watanabe,et al. Short-term effects of solar ultraviolet radiation on the photochemical efficiency of Spirulina platensis in non-aerated and aerated cultures[J]. Acta Hydrobiologica Sinica,2005,29(6):673-677.
APA Wu Hong-Yan,Gao Kun-Shan ,Teruo Watanabe,&Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2005).Short-term effects of solar ultraviolet radiation on the photochemical efficiency of Spirulina platensis in non-aerated and aerated cultures.Acta Hydrobiologica Sinica,29(6),673-677.
MLA Wu Hong-Yan,et al."Short-term effects of solar ultraviolet radiation on the photochemical efficiency of Spirulina platensis in non-aerated and aerated cultures".Acta Hydrobiologica Sinica 29.6(2005):673-677.
Files in This Item:
File Name/Size DocType Version Access License
Short-term effects o(604KB) 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
[Wu Hong-Yan]'s Articles
[Gao Kun-Shan (ksgao@stu.edu.cn)]'s Articles
[Teruo Watanabe]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu Hong-Yan]'s Articles
[Gao Kun-Shan (ksgao@stu.edu.cn)]'s Articles
[Teruo Watanabe]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu Hong-Yan]'s Articles
[Gao Kun-Shan (ksgao@stu.edu.cn)]'s Articles
[Teruo Watanabe]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Short-term effects of solar ultraviolet radiation on the photochemical efficiency of Spirulina platensis in non-aerated and aerated cultures.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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