Isolation and Characterization of Two Novel Siphoviruses Novomoskovsk and Bolokhovo, Encoding Polysaccharide Depolymerases Active against Bacillus pumilus

This study describes two novel bacteriophages infecting members of the Bacillus pumilus group. Even though members of the group are not recognized as pathogenic, several strains belonging to the group have been reported to cause infectious diseases in plants, animals and humans. Bacillus pumilus gro...

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Bibliographic Details
Published in:International journal of molecular sciences 2022-11, Vol.23 (21), p.12988
Main Authors: Skorynina, Anna, Koposova, Olga, Kazantseva, Olesya, Piligrimova, Emma, Ryabova, Natalya, Shadrin, Andrey
Format: Article
Language:English
Subjects:
Adapter proteins
Bacillus pumilus
Bacteria
Biofilms
Enzymes
Eradication
Genomes
Genomics
Host range
Infectious diseases
Lysis
Mars
Pectin
Pectin lyase
Phages
Phylogeny
Plaques
Polysaccharides
Proteins
Radiation
Radiation tolerance
Transcription factors
Transmission electron microscopy
Ultraviolet radiation
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Summary:This study describes two novel bacteriophages infecting members of the Bacillus pumilus group. Even though members of the group are not recognized as pathogenic, several strains belonging to the group have been reported to cause infectious diseases in plants, animals and humans. Bacillus pumilus group species are highly resistant to ultraviolet radiation and capable of forming biofilms, which complicates their eradication. Bacteriophages Novomoskovsk and Bolokhovo were isolated from soil samples. Genome sequencing and phylogenetic analysis revealed that the phages represent two new species of the genus Andromedavirus (class Caudoviricetes). The phages remained stable in a wide range of temperatures and pH values. A host range test showed that the phages specifically infect various strains of B. pumilus. The phages form clear plaques surrounded by halos. Both phages Novomoskovsk and Bolokhovo encode proteins with pectin lyase domains—Putative depolymerases. Obtained in a purified recombinant form, the proteins produced lysis zones on the lawn of a B. pumilus strain. This suggests that Novomoskovsk and Bolokhovo may be effective for the eradication of B. pumilus biofilms.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms232112988