Publication: Soil nutrient depletion is associated with the presence of Burkholderia pseudomallei
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Issued Date
2016-01-01
Resource Type
ISSN
10985336
00992240
00992240
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2-s2.0-84997471531
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Mahidol University
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SCOPUS
Bibliographic Citation
Applied and Environmental Microbiology. Vol.82, No.24 (2016), 7086-7092
Suggested Citation
Viriya Hantrakun, Patpong Rongkard, Malinee Oyuchua, Premjit Amornchai, Cherry Lim, Vanaporn Wuthiekanun, Nicholas P. Nicholas, Sharon J. Peacock, Direk Limmathurotsakul Soil nutrient depletion is associated with the presence of Burkholderia pseudomallei. Applied and Environmental Microbiology. Vol.82, No.24 (2016), 7086-7092. doi:10.1128/AEM.02538-16 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/42867
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Title
Soil nutrient depletion is associated with the presence of Burkholderia pseudomallei
Abstract
© 2016, American Society for Microbiology. All Rights Reserved. Burkholderia pseudomallei is a soil-dwelling bacterium and the cause of melioidosis, which kills an estimated 89,000 people per year worldwide. Agricultural workers are at high risk of infection due to repeated exposure to the bacterium. Little is known about the soil physicochemical properties associated with the presence or absence of the organism. Here, we evaluated the soil physicochemical properties and presence of B. pseudomallei in 6,100 soil samples collected from 61 rice fields in Thailand. The presence of B. pseudomallei was negatively associated with the proportion of clay, proportion of moisture, level of salinity, percentage of organic matter, presence of cadmium, and nutrient levels (phosphorus, potassium, calcium, magnesium, and iron). The presence of B. pseudomallei was not associated with the level of soil acidity (P=0.54). In a multivariable logistic regression model, the presence of B. pseudomallei was negatively associated with the percentage of organic matter (odds ratio [OR], 0.06; 95% confidence interval [CI], 0.01 to 0.47; P=0.007), level of salinity (OR, 0.06; 95% CI, 0.01 to 0.74; P=0.03), and percentage of soil moisture (OR, 0.81; 95% CI, 0.66 to 1.00; P=0.05). Our study suggests that B. pseudomallei thrives in rice fields that are nutrient depleted. Some agricultural practices result in a decline in soil nutrients, which may impact the presence and amount of B. pseudomallei bacteria in affected areas.