Co-association of TwonirDenitrifiers Under the Influence of Emergent Macrophytes

	Co-association of TwonirDenitrifiers Under the Influence of Emergent Macrophytes
	Huang, Rui; Zeng, Jin; Zhao, Dayong; Yong, Bin; Yu, Zhongbo
刊名	MICROBIAL ECOLOGY
	2020
卷号	80 期号:4 页码:809-821
英文摘要	Diverse microorganisms perform similar metabolic process in biogeochemical cycles, whereas they are found of highly genomic differentiation. Biotic interactions should be considered in any community survey of these functional groups, as they contribute to community assembly and ultimately alter ecosystem properties. Current knowledge has mainly been achieved based on functional community characterized by a single gene using co-occurrence network analysis. Biotic interactions between functionally equivalent microorganisms, however, have received much less attention. Herein, we propose thenirK- andnirS-type denitrifier communities represented by these two nitrite reductase (nir)-encoding genes, as model communities to investigate the potential interactions of twonirdenitrifiers. We evaluated co-occurrence patterns and co-association network structures ofnirdenitrifier community from an emergent macrophyte-dominated riparian zone of highly active denitrification in Lake Taihu, China. We found a more segregated pattern in combinednircommunities than in individual communities. Network analyses revealed a modularized structure of associatingnirdenitrifiers. An increased proportion of negative associations among combined communities relative to those of individual communities indicated potential interspecific competition betweennirKandnirSdenitrifiers. pH and NH4+-N were the most important factors driving co-occurrence and mutual exclusion betweennirKandnirSdenitrifiers. We also showed the topological importance ofnirKdenitrifiers acting as module hubs for constructing entire association networks. We revealed previously unexplored co-association relationships betweennirKandnirSdenitrifiers, which were previously neglected in network analyses of individual communities. Usingnirdenitrifier community as a model, these findings would be helpful for us to understand the biotic interactions and mechanisms underlying how functional groups co-exist in performing biogeochemical cycles.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20070]
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	Huang, Rui,Zeng, Jin,Zhao, Dayong,et al. Co-association of TwonirDenitrifiers Under the Influence of Emergent Macrophytes[J]. MICROBIAL ECOLOGY,2020,80(4):809-821.
APA	Huang, Rui,Zeng, Jin,Zhao, Dayong,Yong, Bin,&Yu, Zhongbo.(2020).Co-association of TwonirDenitrifiers Under the Influence of Emergent Macrophytes.MICROBIAL ECOLOGY,80(4),809-821.
MLA	Huang, Rui,et al."Co-association of TwonirDenitrifiers Under the Influence of Emergent Macrophytes".MICROBIAL ECOLOGY 80.4(2020):809-821.