Impact of metal pollution and Thlaspi caerulescens growth on soil microbial communities.

L. Epelde, J.M. Becerril, G.A. Kowalchuk, Y. Deng, J. Zhou, C. Garbisu

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been proposed as indicators of soil functioning, making them potentially useful in evaluating the recovery of polluted soils via phytoremediation strategies. To evaluate microbial responses to metal phytoextraction using hyperaccumulators, a microcosm experiment was carried out to study the impacts of Zn and/or Cd pollution and Thlaspi caerulescens growth on key soil microbial properties: basal respiration; substrate-induced respiration (SIR); bacterial community structure as assessed by PCR-denaturing gradient gel electrophoresis (DGGE); community sizes of total bacteria, ammonia-oxidizing bacteria, and chitin-degrading bacteria as assessed by quantitative PCR (Q-PCR); and functional gene distributions as determined by functional gene arrays (GeoChip). T. caerulescens proved to be suitable for Zn and Cd phytoextraction: Shoots accumulated up to 8,211 and 1,763 mg kg
Original languageEnglish
Pages (from-to)7843-7853
JournalApplied and Environmental Microbiology
Publication statusPublished - 2010


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