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Distribution of Burkholderia pseudomallei within a 300-cm deep soil profile: implications for environmental sampling.

Authors :
Pongmala K
Pierret A
Oliva P
Pando A
Davong V
Rattanavong S
Silvera N
Luangraj M
Boithias L
Xayyathip K
Menjot L
Macouin M
Rochelle-Newall E
Robain H
Vongvixay A
Simpson AJH
Dance DAB
Ribolzi O
Source :
Scientific reports [Sci Rep] 2022 May 23; Vol. 12 (1), pp. 8674. Date of Electronic Publication: 2022 May 23.
Publication Year :
2022

Abstract

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.<br /> (© 2022. The Author(s).)

Details

Language :
English
ISSN :
2045-2322
Volume :
12
Issue :
1
Database :
MEDLINE
Journal :
Scientific reports
Publication Type :
Academic Journal
Accession number :
35606475
Full Text :
https://doi.org/10.1038/s41598-022-12795-0