中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Strategies adopted by Aphanizomenon flos-aquae in response to phosphorus deficiency and their role on growth

文献类型:期刊论文

作者Chen,Xiaoyan2,4; Dolinova,Iva1; Sevcu,Alena1; Jurczak,Tomasz3; Frankiewicz,Piotr3; Wojtal-Frankiewicz,Adrianna3; Wan,Lingling2,4; Deng,Qinghui2,4; Song,Chunlei2; Zhou,Yiyong2
刊名Environmental Sciences Europe
出版日期2020-03-16
卷号32期号:1
ISSN号2190-4707
关键词Aphanizomenon flos-aquae P deficiency Extracellular alkaline phosphatase Polyphosphate body Strategies for P utilization
DOI10.1186/s12302-020-00328-3
通讯作者Cao,Xiuyun(caoxy@ihb.ac.cn)
英文摘要AbstractBackgroundThe N2-fixing cyanobacterium, Aphanizomenon flos-aquae is a globally distributed bloom causing species that degrades water quality of fresh and marine water bodies. Overcoming phosphorus (P) deficiency is one of the ecological advantages for bloom-forming cyanobacteria. It remains unclear to what extent can A. flos-aquae alleviate P deficiency by regulating P using strategies.ResultsBased on in situ observations of extracellular alkaline phosphatase (APase) in A. flos-aquae via enzyme-labeled fluorescence in freshwater bodies in China, Poland and Czechia, we further investigated responses of isolated A. flos-aquae to different P supplies (dissolved inorganic P (Pi) as +DIP, dissolved organic α-glycerophosphate and β-glycerophosphate as +DOPα and +DOPβ, P-free condition as P-depleted). The significantly negative relationships between percentage of APase producing cells and soluble reactive P concentration in both fields and cultures suggested that the excretion of APase in cyanobacterium was regulated by ambient Pi supply. Suffering from P deficiency in the P-depleted treatments, A. flos-aquae showed the highest APase activity but a vigorous growth at the early culture stage, which might also benefit from the formation of polyphosphate body (PPB) and the decrease of cell P quota. In the +DOP treatments, the coordination of dissolved DOP mineralization and continuous prompt utilization of PPB might contribute to a maintenance but not reproduction of A. flos-aquae when relying on DOP, since the specific growth rate kept around 0 cells L?1 day?1 at the second half culture period and the highest cell density reached only 13.38% of that in +DIP treatments while photochemical efficiency was comparable during the whole experiment. Luxury uptake of phosphate as PPB in the +DIP treatments was consistent to the canonical view of polyphosphate as P storage.ConclusionAphanizomenon flos-aquae could achieve an instantaneous growth in response to P deficiency with the coordination of P utilization strategies, while it maintained a long-term sustainable growth but not reproduction under sole DOP supply. Persistent and active reproduction could only be achieved in high Pi supply, which implying that an effective consequence can be expected for combating the bloom of A. flos-aquae when controlling P supply.
语种英语
出版者Springer Berlin Heidelberg
WOS记录号BMC:10.1186/S12302-020-00328-3
源URL[http://ir.ihb.ac.cn/handle/342005/35213]  
专题水生生物研究所_水环境工程研究中心_期刊论文
通讯作者Cao,Xiuyun
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推荐引用方式
GB/T 7714
Chen,Xiaoyan,Dolinova,Iva,Sevcu,Alena,et al. Strategies adopted by Aphanizomenon flos-aquae in response to phosphorus deficiency and their role on growth[J]. Environmental Sciences Europe,2020,32(1).
APA Chen,Xiaoyan.,Dolinova,Iva.,Sevcu,Alena.,Jurczak,Tomasz.,Frankiewicz,Piotr.,...&Cao,Xiuyun.(2020).Strategies adopted by Aphanizomenon flos-aquae in response to phosphorus deficiency and their role on growth.Environmental Sciences Europe,32(1).
MLA Chen,Xiaoyan,et al."Strategies adopted by Aphanizomenon flos-aquae in response to phosphorus deficiency and their role on growth".Environmental Sciences Europe 32.1(2020).

入库方式: OAI收割

来源:水生生物研究所

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