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Prophages in aquatic environments: From silent passengers to keystone regulators of biogeochemical cycles, biofilm dynamics, and antibiotic resistance dissemination
Ling Li , Siyu Huang , Litao Wei , Xinyi Li , Junya Zhang , Xiang Li , Haining Huang , Yinguang Chen
ENG. Environ. ›› 2027, Vol. 21 ›› Issue (2) : 21
Prophages, which are temperate bacteriophages integrated into bacterial chromosomes, serve as pervasive but understudied regulators of microbial ecology in aquatic environments. While they confer benefits such as enhanced virulence, stress resistance, and metabolic flexibility during lysogeny, environmental stressors can induce their lytic cycle, culminating in host cell lysis and phage dispersal. This review synthesizes current knowledge on prophage identification methodologies, environmental distribution patterns across diverse aquatic habitats (marine, freshwater, and wastewater systems), and their diverse roles in modulating environmental processes. Activation triggers and molecular pathways are systematically analyzed, alongside an assessment of their impacts on 1) biogeochemical cycling of C, N, P, and S; 2) dual regulation of biofilm dynamics; and 3) the dissemination and persistence of antibiotic resistance genes. The potential use of prophage derived endolysins as biocontrol agents is also discussed. By pinpointing key knowledge gaps—including in situ quantification of prophage induction, connecting prophage activity to community level processes, and validation under environmentally relevant conditions—this review proposes an integrated framework and priority research directions for aquatic prophage research, with cautious consideration of applications for water quality management and public-health protection.
Prophage induction / Biogeochemical cycles / Antibiotic resistance genes / Biofilm dynamics / Aquatic ecosystems
| ● Establishes an integrated framework for aquatic prophage ecology. | |
| ● Links environmental stressors to prophage induction and ecological effects. | |
| ● Evaluates prophage effects on biogeochemical cycling and biofilm dynamics. | |
| ● Clarifies constraints on prophage-mediated ARG transfer in aquatic systems. | |
| ● Identifies priorities for prophage ecology and biosafety research. |
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Higher Education Press 2027
Supplementary files
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