IBB PAS Repository

Molecular, physiological and phylogenetic traits of Lactococcus 936-type phages from distinct dairy environments

Chmielewska-Jeznach, Magdalena and Bardowski, Jacek K. and Szczepankowska, Agnieszka K. (2018) Molecular, physiological and phylogenetic traits of Lactococcus 936-type phages from distinct dairy environments. Scientific Reports, 8 (12540). ISSN 2045-2322


Official URL: https://www.nature.com/articles/s41598-018-30371-3


Bacteriophage infection of Lactococcus species can cause serious disruption of dairy fermentation processes. The most common isolates from the dairy environment are Siphoviridae lytic 936-type phages. To gain specific knowledge about this group of phages in Polish dairies, we examined 90 isolates from 8 different locations. Based on restriction fragment length polymorphism analysis, coupled with physiological and molecular studies, the isolated phages were divided into 8 distinct groups. Whole-genome sequencing of single representatives from each phage group provided data about their biology and genetic composition. The phages present an overall conserved genome organization. High sequence homology to another Polish isolate, Lactococcus phage bIBB29, indicates their close phylogenetic relatedness to this strain. Such similarity may be suggestive of a general genome conservation among phages persisting in Polish dairies. Comparative genome analyses with other 936-type phages revealed several discriminative traits, including the presence and position of HNH endonuclease genes, varying number of orfs in the early gene region, and a putative TpeX gene. Interestingly, host range of the sequenced phages was restricted to L . lactis subsp. lactis biovar. diacetylactis strains. The results provide new data regarding phages present in the Polish dairy environment and permit analysis of their biology, genome composition and relatedness to other Lactococcus 936-type phages.

Item Type:Article
Subjects:Q Science > QR Microbiology > QR355 Virology
Divisions:Department of Microbial Biochemistry
ID Code:1567
Deposited By: Dr Agnieszka K Szczepankowska
Deposited On:24 Aug 2018 07:27
Last Modified:24 Aug 2018 07:27

Repository Staff Only: item control page