Novel prophage-like sequences in Mycoplasma anserisalpingitidis

Kovács, Áron Botond and Wehmann, Enikő and Sváb, Domonkos and Bekő, Katinka and Grózner, Dénes and Mitter, Alexa and Bali, Krisztina and Morrow, C. J. and Bányai, Krisztián and Gyuranecz, Miklós (2021) Novel prophage-like sequences in Mycoplasma anserisalpingitidis. INFECTION, GENETICS AND EVOLUTION. ISSN 1567-1348

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Abstract

Mycoplasma anserisalpingitidis is a bacterial waterfowl pathogen. In these days of growing antibiotic resistance, it is necessary to search for alternative methods of defense against Mycoplasma impacts in flocks. In order to identify prophage-like sequences, three established bioinformatics tools (PHASTER, PhiSpy, Prophage Hunter) were used in this study for the in silico screening of 82 M. anserisalpingitidis whole genomes. The VIBRANT software was used as a novel approach to further investigate the possibility of prophages in the sequences. The commonly used softwares found prophage-like sequences in the strains, but the results were inconclusive. The VIBRANT search resulted in multiple hits, and many of them were over 10,000 base pairs (bp). These putative prophages are comparable in size to the few described mycoplasma phages. The translated coding DNA sequences of the putative prophages were checked with protein BLAST. The functions of the proteins found by the BLASTP search are common among bacteriophages. The BLASTN search of the sequences found that many of these were more similar to the M. anatis NCTC 10156 strain, rather than the available M. anserisalpingitidis strains. The initial screening pointed at the presence of novel bacteriophages in the M. anserisalpingitidis and M. anatis strains. The VIBRANT search results were very similar to each other and none of these sequences were part of the core genome of M. anserisalpingitidis, with a few exceptions. The VIBRANT analysis explored presumably intact, novel prophages.

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