Global co-occurrence of methanogenic archaea and methanotrophic bacteria in Microcystis aggregates

	Global co-occurrence of methanogenic archaea and methanotrophic bacteria in Microcystis aggregates
	Li, Chuang; Hambright, K. David; Bowen, Hannah G.; Trammell, Majoi A.; Grossart, Hans-Peter; Burford, Michele A.; Hamilton, David P.; Jiang, Helong; Latour, Delphine; Meyer, Elisabeth, I
刊名	ENVIRONMENTAL MICROBIOLOGY
	2021
卷号	23 期号:11 页码:6503-6519
英文摘要	Global warming and eutrophication contribute to the worldwide increase in cyanobacterial blooms, and the level of cyanobacterial biomass is strongly associated with rises in methane emissions from surface lake waters. Hence, methane-metabolizing microorganisms may be important for modulating carbon flow in cyanobacterial blooms. Here, we surveyed methanogenic and methanotrophic communities associated with floating Microcystis aggregates in 10 lakes spanning four continents, through sequencing of 16S rRNA and functional marker genes. Methanogenic archaea (mainly Methanoregula and Methanosaeta) were detectable in 5 of the 10 lakes and constituted the majority (similar to 50%-90%) of the archaeal community in these lakes. Three of the 10 lakes contained relatively more abundant methanotrophs than the other seven lakes, with the methanotrophic genera Methyloparacoccus, Crenothrix, and an uncultured species related to Methylobacter dominating and nearly exclusively found in each of those three lakes. These three are among the five lakes in which methanogens were observed. Operational taxonomic unit (OTU) richness and abundance of methanotrophs were strongly positively correlated with those of methanogens, suggesting that their activities may be coupled. These Microcystis-aggregate-associated methanotrophs may be responsible for a hitherto overlooked sink for methane in surface freshwaters, and their co-occurrence with methanogens sheds light on the methane cycle in cyanobacterial aggregates.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20445]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Li, Chuang,Hambright, K. David,Bowen, Hannah G.,et al. Global co-occurrence of methanogenic archaea and methanotrophic bacteria in Microcystis aggregates[J]. ENVIRONMENTAL MICROBIOLOGY,2021,23(11):6503-6519.
APA	Li, Chuang.,Hambright, K. David.,Bowen, Hannah G..,Trammell, Majoi A..,Grossart, Hans-Peter.,...&Krumholz, Lee R..(2021).Global co-occurrence of methanogenic archaea and methanotrophic bacteria in Microcystis aggregates.ENVIRONMENTAL MICROBIOLOGY,23(11),6503-6519.
MLA	Li, Chuang,et al."Global co-occurrence of methanogenic archaea and methanotrophic bacteria in Microcystis aggregates".ENVIRONMENTAL MICROBIOLOGY 23.11(2021):6503-6519.