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Out of the ground: Aerial and exotic habitats of the melioidosis bacterium Burkholderia pseudomallei in grasses in Australia.
Environ. Microbiol. 14, 2058–2070 (2012)
Melioidosis is an emerging infectious disease of humans and animals in the tropics caused by the soil bacterium Burkholderia pseudomallei. Despite high fatality rates, the ecology of B. pseudomallei remains unclear. We used a combination of field and laboratory studies to investigate B. pseudomallei colonization of native and exotic grasses in northern Australia. Multivariable and spatial analyses were performed to determine significant predictors for B. pseudomallei occurrence in plants and soil collected longitudinally from field sites. In plant inoculation experiments, the impact of B. pseudomallei upon these grasses was studied and the bacterial load semi-quantified. Fluorescence in situ hybridization and confocal laser scanning microscopy were performed to localize the bacteria in plants. Burkholderia pseudomallei was found to inhabit not only the rhizosphere and roots but also aerial parts of specific grasses. This raises questions about the potential spread of B. pseudomallei by grazing animals whose droppings were found to be positive for these bacteria. In particular, B. pseudomallei readily colonized exotic grasses introduced to Australia for pasture. The ongoing spread of these introduced grasses creates new habitats suitable for B. pseudomallei survival and may be an important factor in the evolving epidemiology of melioidosis seen both in northern Australia and elsewhere globally.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
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5.537
1.713
28
53
Anmerkungen
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
no keywords
Sprache
englisch
Veröffentlichungsjahr
2012
Prepublished im Jahr
2011
HGF-Berichtsjahr
2011
ISSN (print) / ISBN
1462-2912
e-ISSN
1462-2920
Zeitschrift
Environmental Microbiology
Quellenangaben
Band: 14,
Heft: 8,
Seiten: 2058–2070
Verlag
Wiley
Begutachtungsstatus
Peer reviewed
Institut(e)
Research Unit Microbe-Plant Interactions (AMP)
POF Topic(s)
20402 - Sustainable Plant Production
Forschungsfeld(er)
Environmental Sciences
PSP-Element(e)
G-504600-001
PubMed ID
22176696
Scopus ID
84864383208
Erfassungsdatum
2011-12-31