Covering 71％of the Earth's surface,the oceans harbor abundant and distinct microbial resources.To preserve the freshness of seafood,cyclic temporary breeding technique is commonly used to elevate oxygen level in water.Our study employed metagenomic technique to analyze the influence of oxygen level on the structure,func-tional traits,and antibiotic resistance genes of microbial communities in marine.Results indicated that marine mi-crobial community was dominated by Alphaproteobacteria and exhibited higher diversity in high-oxygen level than which in low level.However,functional diversity of microbial communities decreased with the rising oxygen level.The abundances of various antibiotic resistance genes and virulence factor genes declined significantly with increasing oxygen concentration.These results suggested that the rise of oxygen level in seawater can reduce microbial resistance to antibiotics and their pathogenicity,thereby mitigate potential health risks to humans.
维普
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