Cyanobacterial blooms contribute to the diversity of antibiotic-resistance genes in aquatic ecosystems
Zhang, Qi (Zhejiang University of Technology. College of Environment)
Zhang, Zhenyan (Zhejiang University of Technology. College of Environment)
Lu, Tao (Zhejiang University of Technology. College of Environment)
Peijnenburg, W. J. G. M. (Center for Safety of Substances and Products. National Institute of Public Health and the Environment)
Gillings, Michael (Macquarie University. Department of Biological Sciences)
Yang, Xiaoru (Chinese Academy of Sciences. Institute of Urban Environment)
Chen, Jianmeng (Zhejiang University of Technology. College of Environment)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zhu, Yong-Guan (Chinese Academy of Sciences. Research Center for Ecoenvironmental Sciences. State Key Lab of Urban and Regional Ecology)
Zhou, Ningyi (Shanghai Jiao Tong University. State Key Laboratory of Microbial Metabolism, and School of Life Sciences & Biotechnology)
Su, Jianqiang (Chinese Academy of Sciences. Institute of Urban Environment)
Qian, Haifeng (Zhejiang University of Technology. College of Environment)

Data:	2020
Resum:	Cyanobacterial blooms are a global ecological problem that directly threatens human health and crop safety. Cyanobacteria have toxic effects on aquatic microorganisms, which could drive the selection for resistance genes. The effect of cyanobacterial blooms on the dispersal and abundance of antibiotic-resistance genes (ARGs) of concern to human health remains poorly known. We herein investigated the effect of cyanobacterial blooms on ARG composition in Lake Taihu, China. The numbers and relative abundances of total ARGs increased obviously during a Planktothrix bloom. More pathogenic microorganisms were present during this bloom than during a Planktothrix bloom or during the non-bloom period. Microcosmic experiments using additional aquatic ecosystems (an urban river and Lake West) found that a coculture of Microcystis aeruginosa and Planktothrix agardhii increased the richness of the bacterial community, because its phycosphere provided a richer microniche for bacterial colonization and growth. Antibiotic-resistance bacteria were naturally in a rich position, successfully increasing the momentum for the emergence and spread of ARGs. These results demonstrate that cyanobacterial blooms are a crucial driver of ARG diffusion and enrichment in freshwater, thus providing a reference for the ecology and evolution of ARGs and ARBs and for better assessing and managing water quality.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Water microbiology ; Microbial ecology
Publicat a:	Communications Biology, Vol. 3 (December 2020) , art. 737, ISSN 2399-3642

DOI: 10.1038/s42003-020-01468-1
PMID: 33277584

10 p, 1.2 MB

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