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Enhanced Bacterium-Phage Symbiosis in Attached Microbial Aggregates on a Membrane Surface Facing Elevated Hydraulic Stress.
Tan, Yixiao; Yu, Pingfeng; Huang, Dan; Yuan, Mengting Maggie; Yu, Zhuodong; Lu, Huijie; Alvarez, Pedro J J; Zhu, Liang.
Afiliación
  • Tan Y; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
  • Yu P; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
  • Huang D; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314100, China.
  • Yuan MM; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
  • Yu Z; Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720, United States.
  • Lu H; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
  • Alvarez PJJ; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
  • Zhu L; Civil and Environmental Engineering Department, Rice University, Houston, Texas 77005, United States.
Environ Sci Technol ; 57(45): 17324-17337, 2023 11 14.
Article en En | MEDLINE | ID: mdl-37930060
ABSTRACT
Phages are increasingly recognized for their importance in microbial aggregates, including their influence on microbial ecosystem services and biotechnology applications. However, the adaptive strategies and ecological functions of phages in different aggregates remain largely unexplored. Herein, we used membrane bioreactors to investigate bacterium-phage interactions and related microbial functions within suspended and attached microbial aggregates (SMA vs AMA). SMA and AMA represent distinct microbial habitats where bacterial communities display distinct patterns in terms of dominant species, keystone species, and bacterial networks. However, bacteria and phages in both aggregates exhibited high lysogenicity, with 60% lysogenic phages in the virome and 70% lysogenic metagenome-assembled genomes of bacteria. Moreover, substantial phages exhibited broad host ranges (34% in SMA and 42% in AMA) and closely interacted with habitat generalist species (43% in SMA and 49% in AMA) as adaptive strategies in stressful operation environments. Following a mutualistic pattern, phage-carried auxiliary metabolic genes (pAMGs; 238 types in total) presumably contributed to the bacterial survival and aggregate stability. The SMA-pAMGs were mainly associated with energy metabolism, while the AMA-pAMGs were mainly associated with antioxidant biosynthesis and the synthesis of extracellular polymeric substances, representing habitat-dependent patterns. Overall, this study advanced our understanding of phage adaptive strategies in microbial aggregate habitats and emphasized the importance of bacterium-phage symbiosis in the stability of microbial aggregates.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Bacteriófagos / Microbiota Idioma: En Revista: Environ Sci Technol Año: 2023 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Bacteriófagos / Microbiota Idioma: En Revista: Environ Sci Technol Año: 2023 Tipo del documento: Article País de afiliación: China