Pongmala K., Pierret Alain, Oliva P., Pando Anne, Davong V., Rattanavong S., Silvera Norbert, Luangraj M., Boithias L., Xayyathip K., Menjot L., Macouin M., Rochelle-Newall Emma, Robain Henri, Vongvixay A., Simpson A. J. H., Dance D. A. B., Ribolzi Olivier. (2022). Distribution of Burkholderia pseudomallei within a 300-cm deep soil profile : implications for environmental sampling. Scientific Reports - Nature, 12 (1), 8674 [16 p.]. ISSN 2045-2322.
Titre du document
Distribution of Burkholderia pseudomallei within a 300-cm deep soil profile : implications for environmental sampling
Année de publication
2022
Auteurs
Pongmala K., Pierret Alain, Oliva P., Pando Anne, Davong V., Rattanavong S., Silvera Norbert, Luangraj M., Boithias L., Xayyathip K., Menjot L., Macouin M., Rochelle-Newall Emma, Robain Henri, Vongvixay A., Simpson A. J. H., Dance D. A. B., Ribolzi Olivier
Source
Scientific Reports - Nature, 2022,
12 (1), 8674 [16 p.] ISSN 2045-2322
The environmental distribution of Burkholderia pseudomallei, the causative agent of melioidosis, remains poorly understood. B. pseudomallei is known to have the ability to occupy a variety of environmental niches, particularly in soil. This paper provides novel information about a putative association of soil biogeochemical heterogeneity and the vertical distribution of B. pseudomallei. We investigated (1) the distribution of B. pseudomallei along a 300-cm deep soil profile together with the variation of a range of soil physico-chemical properties; (2) whether correlations between the distribution of B. pseudomallei and soil physico-chemical properties exist and (3) when they exist, what such correlations indicate with regards to the environmental conditions conducive to the occurrence of B. pseudomallei in soils. Unexpectedly, the highest concentrations of B. pseudomallei were observed between 100 and 200 cm below the soil surface. Our results indicate that unravelling the environmental conditions favorable to B. pseudomallei entails considering many aspects of the actual complexity of soil. Important recommendations regarding environmental sampling for B. pseudomallei can be drawn from this work, in particular that collecting samples down to the water table is of foremost importance, as groundwater persistence appears to be a controlling factor of the occurrence of B. pseudomallei in soil.
Plan de classement
Pédologie [068]
;
Biologie du sol [074]
Description Géographique
LAOS
Localisation
Fonds IRD [F B010085183]
Identifiant IRD
fdi:010085183
