TY - JOUR
T1 - Genetic variation associated with infection and the environment in the accidental pathogen Burkholderia pseudomallei
AU - Chewapreecha, Claire
AU - Mather, Alison E.
AU - Harris, Simon R.
AU - Hunt, Martin
AU - Holden, Matthew T. G.
AU - Chaichana, Chutima
AU - Wuthiekanun, Vanaporn
AU - Dougan, Gordon
AU - Day, Nicholas P. J.
AU - Limmathurotsakul, Direk
AU - Parkhill, Julian
AU - Peacock, Sharon J.
PY - 2019/11/22
Y1 - 2019/11/22
N2 - The environmental bacterium Burkholderia pseudomallei causes
melioidosis, an important endemic human disease in tropical and
sub-tropical countries. This bacterium occupies broad ecological niches
including soil, contaminated water, single-cell microbes, plants and
infection in a range of animal species. Here, we performed genome-wide
association studies for genetic determinants of environmental and human
adaptation using a combined dataset of 1,010 whole genome sequences of B. pseudomallei
from Northeast Thailand and Australia, representing two major disease
hotspots. With these data, we identified 47 genes from 26 distinct loci
associated with clinical or environmental isolates from Thailand and
replicated 12 genes in an independent Australian cohort. We next
outlined the selective pressures on the genetic loci (dN/dS) and the
frequency at which they had been gained or lost throughout their
evolutionary history, reflecting the bacterial adaptability to a wide
range of ecological niches. Finally, we highlighted loci likely
implicated in human disease.
AB - The environmental bacterium Burkholderia pseudomallei causes
melioidosis, an important endemic human disease in tropical and
sub-tropical countries. This bacterium occupies broad ecological niches
including soil, contaminated water, single-cell microbes, plants and
infection in a range of animal species. Here, we performed genome-wide
association studies for genetic determinants of environmental and human
adaptation using a combined dataset of 1,010 whole genome sequences of B. pseudomallei
from Northeast Thailand and Australia, representing two major disease
hotspots. With these data, we identified 47 genes from 26 distinct loci
associated with clinical or environmental isolates from Thailand and
replicated 12 genes in an independent Australian cohort. We next
outlined the selective pressures on the genetic loci (dN/dS) and the
frequency at which they had been gained or lost throughout their
evolutionary history, reflecting the bacterial adaptability to a wide
range of ecological niches. Finally, we highlighted loci likely
implicated in human disease.
U2 - 10.1038/s42003-019-0678-x
DO - 10.1038/s42003-019-0678-x
M3 - Article
SN - 2399-3642
VL - 2
JO - Communications Biology
JF - Communications Biology
M1 - 428
ER -