Quantitative study on the survivability of Microcystis colonies in lake sediments

doi:10.1007/s10811-017-1246-8

CORC > 武汉植物园 > 中国科学院武汉植物园

	Quantitative study on the survivability of Microcystis colonies in lake sediments
	Xiao, Bangding 1; Wang, Chunbo 1; Feng, Bing 1,2; Tian, Cuicui 1; Tian, Yingying 1,2; Chen, Deng 1,2; Wu, Xingqiang 1; Li, Genbao 3
刊名	JOURNAL OF APPLIED PHYCOLOGY
	2018-02-01
卷号	30 期号:1 页码:495-506
关键词	Microcystis Cyanobacteria Survivability Sediment Temperature Microcystins Photosynthetic activity
ISSN号	0921-8971
DOI	10.1007/s10811-017-1246-8
英文摘要	Microcystis colonies can overwinter in sediment and may inoculate the water column through recruitment, promoting the annual recurrence of Microcystis blooms. Through microcosm experiments, the survivability of benthic Microcystis was quantitatively investigated by elucidating the dynamics of its cell numbers, photosynthetic activity, and toxin content under various sediment conditions. The abundance of Microcystis colonies in the sediment samples did not decrease significantly over the 22-week experiment at 5 A degrees C, whereas more than 90% of the benthic population died within 3 months at 25 A degrees C. The survivability of the Microcystis colonies under the aerobic conditions of surface sediments was significantly lower than under the anaerobic conditions of deep sediments. Toxic M. aeruginosa and non-toxic M. wesenbergii exhibited similar survivability, although the final survival efficiency of M. aeruginosa was higher than that of M. wesenbergii at 15 and 25 A degrees C. Microcystin quotas remained stable at 5 and 15 A degrees C but decreased significantly at 25 A degrees C. The photosynthetic activity of the benthic Microcystis colonies decreased gradually, with a larger decline rate at higher temperatures. Our study suggests that most benthic Microcystis colonies can overwinter successfully, with microcystins preserved and photosynthetic activity maintained, significantly increasing the risk of bloom formation. However, they were unable to accumulate in the sediments of subtropical shallow lakes over a period of years.
资助项目	National Natural Science Foundation of China[31270509] ; National Natural Science Foundation of China[31370504] ; Joint NSFC-ISF Research Program[41561144008] ; Major Science and Technology Program for Water Pollution Control and Treatment[2013ZX07102005] ; State Key Laboratory of Freshwater Ecology and Biotechnology of China[2016FB10]
WOS研究方向	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000427804800049
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/4828]
专题	中国科学院武汉植物园
通讯作者	Xiao, Bangding
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Bangding,Wang, Chunbo,Feng, Bing,et al. Quantitative study on the survivability of Microcystis colonies in lake sediments[J]. JOURNAL OF APPLIED PHYCOLOGY,2018,30(1):495-506.
APA	Xiao, Bangding.,Wang, Chunbo.,Feng, Bing.,Tian, Cuicui.,Tian, Yingying.,...&Li, Genbao.(2018).Quantitative study on the survivability of Microcystis colonies in lake sediments.JOURNAL OF APPLIED PHYCOLOGY,30(1),495-506.
MLA	Xiao, Bangding,et al."Quantitative study on the survivability of Microcystis colonies in lake sediments".JOURNAL OF APPLIED PHYCOLOGY 30.1(2018):495-506.