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    Comparative and functional genomics of the Lactococcus lactis taxon; insights into evolution and niche adaptation

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    Author
    Kelleher, Philip
    Bottacini, Francesca
    Mahony, Jennifer
    Kilcawley, Kieran cc
    van Sinderen, Douwe
    Keyword
    Lactococcus lactis
    Genomics
    SMRT sequencing
    Pan-genome
    Niche adaptation
    Date
    29/03/2017
    
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    URI
    http://hdl.handle.net/11019/1114
    Citation
    Kelleher et al. Comparative and functional genomics of the Lactococcus lactis taxon; insights into evolution and niche adaptation. BMC Genomics. 2017 Mar 29;18(1):267
    Abstract
    Background Lactococcus lactis is among the most widely studied lactic acid bacterial species due to its long history of safe use and economic importance to the dairy industry, where it is exploited as a starter culture in cheese production. Results In the current study, we report on the complete sequencing of 16 L. lactis subsp. lactis and L. lactis subsp. cremoris genomes. The chromosomal features of these 16 L. lactis strains in conjunction with 14 completely sequenced, publicly available lactococcal chromosomes were assessed with particular emphasis on discerning the L. lactis subspecies division, evolution and niche adaptation. The deduced pan-genome of L. lactis was found to be closed, indicating that the representative data sets employed for this analysis are sufficient to fully describe the genetic diversity of the taxon. Conclusions Niche adaptation appears to play a significant role in governing the genetic content of each L. lactis subspecies, while (differential) genome decay and redundancy in the dairy niche is also highlighted.
    Funder
    Department of Agriculture, Food and the Marine, Ireland; Science Foundation Ireland
    Grant Number
    10/RD/TMFRC/704; 13/IA/1953; 14/TIDA/2287; 15/SIRG/3430
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.1186/s12864-017-3650-5
    Scopus Count
    Collections
    Food Biosciences
    Food Quality & Sensory Science
    Teagasc publications in Biomed Central
    Teagasc publications in Biomed Central
    Teagasc publications in Biomed Central

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