Cadmium and cadmium-tolerant soil bacteria in cacao crops from northeastern Colombia.

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ID: 85275
2018
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Abstract
This research aims to assess total-cadmium soil content and microbiological aspects to understand the dynamics of culturable cadmium-tolerant bacteria (CdtB) in cacao soils from northeastern Colombia.An integration of inverted dish plating, Cd determination and a microcalorimetry assay (IMC) was carried out. A farm in Boyacá showed the highest level of total soil Cd (3·74 mg kg ) followed by farms in Santander and Arauca (2·76 and 1·16 mg kg , respectively). Coefficient of determination between total soil Cd and CFU of CdtB was high (R  = 0·83) for the farm in Boyacá. Moreover, a pool of 129 CdtB was isolated, and phylogeny of 21 CdtB was discussed. Among CdtB strains isolated, Enterobacter sp. CdDB41 showed major Cd immobilization capacity (Q of 2·21 and 2·32 J at 6 and 24 mg l of CdCl ), with an immobilization rate of 0·220 mg kg h .Among CdtB strains isolated, Enterobacter sp. CdDB41 showed major Cd immobilization capacity (Q of 2·21 and 2·32 J at 6 and 24 mg l of CdCl ), with an immobilization rate of 0·220 mg kg  h .Nothing is known about soil CdtB in cacao. Our data showed that CdtB such as Enterobacter sp. has high immobilization capacity. Furthermore, the otavite found in situ might be mineralized due to the bacterial metabolic activity of CdtB.
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bravo2018cadmiumjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Bravo, D;Pardo-Díaz, S;Benavides-Erazo, J;Rengifo-Estrada, G;Braissant, O;Leon-Moreno, C;
Journal Journal of applied microbiology
Year 2018
DOI
10.1111/jam.13698
URL
Keywords
cadmium cacao cadmium-tolerant bacteria otavite total soil cadmium

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