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Extracellular phosphatases produced by phytoplankton and other sources in shallow eutrophic lakes (Wuhan, China): taxon-specific versus bulk activity
Cao, Xiuyun3; Song, Chunlei3; Zhou, Yiyong3; Strojsova, Alena1,2; Znachor, Petr1,2; Zapomelova, Eliska1,2; Vrba, Jaroslav1,2; Vrba, J, Univ S Bohemia, Fac Sci, Sadkach 7, Ceske Budejovice 37005, Czech Republic
2009-08-01
Source PublicationLIMNOLOGY
ISSN1439-8621
Volume10Issue:2Pages:95-104
AbstractExtracellular phosphatases are an important part of the phosphorus cycle in aquatic environments. Phosphatase activity (PA) in plankton was studied in seven subtropical shallow lakes of different exploitation management and trophic status in the urban area of Wuhan City. Bulk PA was rather high (range 1.1-11 mu mol l(-1) h(-1)), although concentrations of soluble reactive phosphorus (SRP) were also high (range 27 mu g P l(-1) to similar to 1.5 mg P l(-1)) in all lakes. Cell-associated extracellular PA in phytoplankton was detected using the fluorescence-labelled enzyme activity technique. Phytoplankton species partly contributed to the bulk PA. We found explicit differences in the presence of cell-associated phosphatase within the main phytoplankton groups; species belonging to Chlorophyta and Dinophyta were regularly phosphatase-positive, while Cyanophyta and Bacillariophyceae were phosphatase-negative in all but one case. Furthermore, there is a certain potential of extracellular phosphatases produced by heterotrophic nanoflagellates in most of the lakes. This new finding compromises the 'traditional' interpretation of bulk phosphatase data as being due to overall phytoplankton or bacterial P regeneration.; Extracellular phosphatases are an important part of the phosphorus cycle in aquatic environments. Phosphatase activity (PA) in plankton was studied in seven subtropical shallow lakes of different exploitation management and trophic status in the urban area of Wuhan City. Bulk PA was rather high (range 1.1-11 mu mol l(-1) h(-1)), although concentrations of soluble reactive phosphorus (SRP) were also high (range 27 mu g P l(-1) to similar to 1.5 mg P l(-1)) in all lakes. Cell-associated extracellular PA in phytoplankton was detected using the fluorescence-labelled enzyme activity technique. Phytoplankton species partly contributed to the bulk PA. We found explicit differences in the presence of cell-associated phosphatase within the main phytoplankton groups; species belonging to Chlorophyta and Dinophyta were regularly phosphatase-positive, while Cyanophyta and Bacillariophyceae were phosphatase-negative in all but one case. Furthermore, there is a certain potential of extracellular phosphatases produced by heterotrophic nanoflagellates in most of the lakes. This new finding compromises the 'traditional' interpretation of bulk phosphatase data as being due to overall phytoplankton or bacterial P regeneration.
SubtypeArticle
KeywordElf97 Phosphate Phosphorus Regeneration Polymictic Lakes Algae Heterotrophic Flagellates Protozoa
Department[Strojsova, Alena; Znachor, Petr; Zapomelova, Eliska; Vrba, Jaroslav] Univ S Bohemia, Fac Sci, Ceske Budejovice 37005, Czech Republic; [Strojsova, Alena; Znachor, Petr; Zapomelova, Eliska; Vrba, Jaroslav] Acad Sci Czech Republic, Inst Hydrobiol, Ctr Biol, Ceske Budejovice 37005, Czech Republic; [Cao, Xiuyun; Song, Chunlei; Zhou, Yiyong] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Subject AreaLimnology
DOI10.1007/s10201-009-0265-9
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617]
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectLimnology
WOS IDWOS:000268017800003
WOS KeywordPHOSPHORUS-DEFICIENCY INDICATORS ; ENZYME-LABELED FLUORESCENCE ; FRESH-WATER PHYTOPLANKTON ; ALKALINE-PHOSPHATASE ; SPRING PHYTOPLANKTON ; KINETICS ; DONGHU ; ERKEN ; AVAILABILITY ; ENVIRONMENTS
Funding OrganizationNational Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617] ; National Science Foundation of China [30600088]; Grant Agency of the AS CR [kzcx2-yw-426, A6017202]; Sino-Czech Scientific and Technological Cooperation [36-20]; Czech Ministry of Education, Youth and Sports [M 6007665801, ME 617]
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7656
Collection期刊论文
Corresponding AuthorVrba, J, Univ S Bohemia, Fac Sci, Sadkach 7, Ceske Budejovice 37005, Czech Republic
Affiliation1.Univ S Bohemia, Fac Sci, Ceske Budejovice 37005, Czech Republic
2.Acad Sci Czech Republic, Inst Hydrobiol, Ctr Biol, Ceske Budejovice 37005, Czech Republic
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Cao, Xiuyun,Song, Chunlei,Zhou, Yiyong,et al. Extracellular phosphatases produced by phytoplankton and other sources in shallow eutrophic lakes (Wuhan, China): taxon-specific versus bulk activity[J]. LIMNOLOGY,2009,10(2):95-104.
APA Cao, Xiuyun.,Song, Chunlei.,Zhou, Yiyong.,Strojsova, Alena.,Znachor, Petr.,...&Vrba, J, Univ S Bohemia, Fac Sci, Sadkach 7, Ceske Budejovice 37005, Czech Republic.(2009).Extracellular phosphatases produced by phytoplankton and other sources in shallow eutrophic lakes (Wuhan, China): taxon-specific versus bulk activity.LIMNOLOGY,10(2),95-104.
MLA Cao, Xiuyun,et al."Extracellular phosphatases produced by phytoplankton and other sources in shallow eutrophic lakes (Wuhan, China): taxon-specific versus bulk activity".LIMNOLOGY 10.2(2009):95-104.
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