Response of soil bacteria to Hg (II) in relation to soil characteristics and cell location
The response of indigenous bacterial communities to the addition of inorganic mercury (50 μM of Hg(II)) was compared over a 30 day period in four soils of contrasting properties. Hg(II) impact was estimated by following population dynamics of viable heterotrophic bacteria (VH) and mercury resistant bacteria (HgR) by indirect enumeration in unfractionated soil and in the inner and outer parts of soil aggregates obtained by successive washings. Numbers of VH bacteria in unfractionated soils were not affected by mercury in any of the studied soils, whereas an increase in resistant bacteria was observed in all of them. The lag phase before the increase of HgR bacteria and the magnitude of the e…
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EA BIOME INRA; National audience
L'impact du mercure sur les bactéries telluriques
Les polluants toxiques, tels que le mercure, affectent largement les ecosystemes aquatiques, mais aussi les sols. Comment les bacteries telluriques reagissent-elles ?