Abstract
Pseudomonas spp. are one of the most important ecological flora on the earth, widely distributed in freshwater, soil and other ecological environments. Pseudomonas phages are viruses hosted by Pseudomonas spp., which not only affect the survival and evolution of the hosts, but also play important roles in biomass circulation and energy flow. With the rapid development of genome sequencing technologies, the whole genome sequences of many Pseudomonas phages have been completed. As of July 2020, 247 Pseudomonas phage genomes were deposited in GenBank, accounting for 2.45% of the total 10,069 viral genomes. The genome sizes of Pseudomonas bacteriophages and the genetic contents are different, and the similarity between genomes is low, so the study on Pseudomonas bacteriophage genomes is relatively less. In this review, we summarize the characteristics, genetic diversity, and functional genes of Pseudomonas bacteriophages genomes in order to provide a reference for understanding the antagonistic coevolution of bacteria and phages and the genetic evolution of phages.
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