IHB OpenIR  > 期刊论文
UV-sensitive P compounds: Release mechanism, seasonal fluctuation and inhibitory effects on alkaline phosphatase activity in a shallow Chinese freshwater lake (Donghu Lake)
Zhou Yiyong; Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA
1996
Source PublicationHYDROBIOLOGIA
Volume335Issue:1Pages:55-62
AbstractFiltrable phosphorus compounds in a shallow Chinese freshwater lake (Donghu Lake) were fractionated by Sephadex G-25 gel-filtration chromatography. Some portions of those compounds released soluble reactive phosphorus upon irradiation with low dose ultraviolet light. Catalase and a hydroxyl radical scavenger (mannitol) markedly prevented photosensitive phosphorus release. The observed effects may be explained by the action of oxidizing reagents such as hydroxyl radicals, produced in photochemical reactions between UV irradiation and humic substances in the water. There was a strong seasonality in UV-sensitive P (UVSP) release. Michaels constants (K-m) of total alkaline phosphatase in the lake water showed a direct positive relation to UVSP. Plot of K-m against the UVSP/phosphomonoester ratio reveals a strong relationship between the two variables. These results suggest that in some situations UVSP may be a competitive inhibitor of alkaline phosphatase activity in the lake. The competitive inhibition of fractionated UVSP on alkaline phosphatase reagent (Sigma) apparently supports this hypothesis.
KeywordUv-sensitive p Compounds AlkalIne Phosphatase In Lake Water Hydrogen Peroxide Hydroxyl Radical
Subject AreaMarine & Freshwater Biology
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/10280
Collection期刊论文
Corresponding AuthorZhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA
Recommended Citation
GB/T 7714
Zhou Yiyong,Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA. UV-sensitive P compounds: Release mechanism, seasonal fluctuation and inhibitory effects on alkaline phosphatase activity in a shallow Chinese freshwater lake (Donghu Lake)[J]. HYDROBIOLOGIA,1996,335(1):55-62.
APA Zhou Yiyong,&Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA.(1996).UV-sensitive P compounds: Release mechanism, seasonal fluctuation and inhibitory effects on alkaline phosphatase activity in a shallow Chinese freshwater lake (Donghu Lake).HYDROBIOLOGIA,335(1),55-62.
MLA Zhou Yiyong,et al."UV-sensitive P compounds: Release mechanism, seasonal fluctuation and inhibitory effects on alkaline phosphatase activity in a shallow Chinese freshwater lake (Donghu Lake)".HYDROBIOLOGIA 335.1(1996):55-62.
Files in This Item:
File Name/Size DocType Version Access License
UV-sensitive P compo(548KB) 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
[Zhou Yiyong]'s Articles
[Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou Yiyong]'s Articles
[Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou Yiyong]'s Articles
[Zhou, YY, WUHAN UNIV,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: UV-sensitive P compounds-Release mechanism, seasonal fluctuation and inhibitory effects on alkaline phosphatase activity in a shallow Chinese freshwater lake (Donghu Lake).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.