Response of soil bacterial community structure to successive perturbations of different types and intensities.
In soil, genetic structure modifications of indigenous bacterial community consecutively to a severe stress (mercury contamination) were delayed when the community was pre-exposed to various minor perturbations (heat, copper and atrazine). Such minor perturbations induced transitory community structure modifications leading to an increase of community stability towards a severe mercury stress. These results illustrated well the short-term pre-adaptation process for bacterial community hypothesizing that community submitted to perturbations become more resistant to withstand another stress.
Bressan
Mélanie
M
INRA, Université de Bourgogne, UMR Microbiologie du Sol et de l'Environnement, CMSE, 17, rue Sully, B.V. 86510, 21065 Dijon Cedex, France.
Mougel
Christophe
C
Dequiedt
Samuel
S
Maron
Pierre-Alain
PA
Lemanceau
P
P
Ranjard
Lionel
L
D001280:Atrazine / Q000009:adverse effects; D003300:Copper / Q000009:adverse effects; D016172:DNA Fingerprinting; D017753:Ecosystem; D006540:Herbicides / Q000009:adverse effects; D006358:Hot Temperature / Q000009:adverse effects; D008628:Mercury / Q000009:adverse effects*; D019216:Metals, Heavy / Q000633:toxicity*; D050296:Microbial Viability / Q000187:drug effects* / Q000235:genetics; D012988:Soil Microbiology
D006540:Herbicides; D019216:Metals, Heavy; D003300:Copper; D008628:Mercury; D001280:Atrazine