Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China)

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	Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China)
	Yue, Tao 1,2; Zhang, Delu 3; Hu, Chunxiang 1
刊名	JOURNAL OF APPLIED PHYCOLOGY
	2014-02-01
卷号	26 期号:1 页码:333-339
关键词	Microcystis Growth rate Temperature Phosphorus uptake Phosphorus storage
ISSN号	0921-8971
通讯作者	Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
中文摘要	Microcystis is a common freshwater bloom-dominating cyanobacterial genus. However, the crucial factors that affect the seasonal succession and extent of dominance of different species remain largely unknown. This study investigated inorganic phosphorus (P) uptake, growth, and P utilization of two dominant Microcystis species from Lake Taihu (China) at different P concentrations and temperatures. Compared with Microcystis wesenbergii, Microcystis flos-aquae had higher maximum uptake rate and luxury storage coefficient. However, M. flos-aquae also had a higher P demand for growth. Under P-rich conditions (64.5 to 174.5 mu M), M. flos-aquae had a higher growth rate (0.16 to 0.21 d(-1)) than M. wesenbergii (0.06 to 0.19 d(-1)) at 22 to 30 A degrees C. M. wesenbergii, with higher phosphate affinity, had a lower P demand to sustain its growth, and yielded a higher growth rate of 0.10 d(-1) at low P concentration (6.5 mu M) at 34 A degrees C, whereas M. flos-aquae had a lower growth rate of 0.03 d(-1). Therefore, M. flos-aquae was dominant in late spring under P-rich conditions, whereas M. wesenbergii prevailed in hot summer after M. flos-aquae decreased under P-limited conditions. These results agree well with their succession patterns in the field. Overall, succession and dominance of M. flos-aquae and M. wesenbergii in Lake Taihu are regulated by P concentration and water temperature.
英文摘要	Microcystis is a common freshwater bloom-dominating cyanobacterial genus. However, the crucial factors that affect the seasonal succession and extent of dominance of different species remain largely unknown. This study investigated inorganic phosphorus (P) uptake, growth, and P utilization of two dominant Microcystis species from Lake Taihu (China) at different P concentrations and temperatures. Compared with Microcystis wesenbergii, Microcystis flos-aquae had higher maximum uptake rate and luxury storage coefficient. However, M. flos-aquae also had a higher P demand for growth. Under P-rich conditions (64.5 to 174.5 mu M), M. flos-aquae had a higher growth rate (0.16 to 0.21 d(-1)) than M. wesenbergii (0.06 to 0.19 d(-1)) at 22 to 30 A degrees C. M. wesenbergii, with higher phosphate affinity, had a lower P demand to sustain its growth, and yielded a higher growth rate of 0.10 d(-1) at low P concentration (6.5 mu M) at 34 A degrees C, whereas M. flos-aquae had a lower growth rate of 0.03 d(-1). Therefore, M. flos-aquae was dominant in late spring under P-rich conditions, whereas M. wesenbergii prevailed in hot summer after M. flos-aquae decreased under P-limited conditions. These results agree well with their succession patterns in the field. Overall, succession and dominance of M. flos-aquae and M. wesenbergii in Lake Taihu are regulated by P concentration and water temperature.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
研究领域[WOS]	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
关键词[WOS]	ENVIRONMENTAL-FACTORS ; BUOYANCY REGULATION ; PHOSPHORUS ; AERUGINOSA ; GROWTH ; CYANOPHYCEAE ; NITROGEN ; PHYTOPLANKTON ; METABOLISM ; DIFFERENCE
收录类别	SCI
资助信息	National Basic Research Program of China [2008CB418001-1]
语种	英语
WOS记录号	WOS:000330969800037
公开日期	2014-08-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/20115]
专题	水生生物研究所_藻类生物学及应用研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China
推荐引用方式 GB/T 7714	Yue, Tao,Zhang, Delu,Hu, Chunxiang. Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China)[J]. JOURNAL OF APPLIED PHYCOLOGY,2014,26(1):333-339.
APA	Yue, Tao,Zhang, Delu,&Hu, Chunxiang.(2014).Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China).JOURNAL OF APPLIED PHYCOLOGY,26(1),333-339.
MLA	Yue, Tao,et al."Comparative studies on phosphate utilization of two bloom-forming Microcystis spp. (cyanobacteria) isolated from Lake Taihu (China)".JOURNAL OF APPLIED PHYCOLOGY 26.1(2014):333-339.