Abstract
The aim of this study was to test whether the multiple-tolerant bacterium Enterobacter intermedius MH8b
isolated from metal-contaminated soil is able to promote plant growth and enhance Zn, Cd and Cu uptake
by Sinapis alba L. under laboratory conditions. Additionally, the mechanisms of the plant growth promotion
and the ecological consequences of bioaugmentation were examined. MH8b exhibited the ability to
produce 1-amino-cyclopropane-1-carboxylic acid deaminase, indole 3-acetic acid and hydrocyanic acid
and was also able to solubilize inorganic phosphate. Soil inoculation with MH8b significantly increased
plant biomass as well as the accumulation of Zn (32%) and Cd (94%) in plant shoots. DGGE and PLFA
analysis revealed that the introduced MH8b had only a short-term influence on the structure of indigenous
microbial communities. The plant growth-promoting properties of MH8b and its ability to increase
the metal uptake connected with its long-term survival and its short-term impact on autochthonous
microflora make the strain a good candidate for the promotion of plant growth and phytoremediation
efficiency.
isolated from metal-contaminated soil is able to promote plant growth and enhance Zn, Cd and Cu uptake
by Sinapis alba L. under laboratory conditions. Additionally, the mechanisms of the plant growth promotion
and the ecological consequences of bioaugmentation were examined. MH8b exhibited the ability to
produce 1-amino-cyclopropane-1-carboxylic acid deaminase, indole 3-acetic acid and hydrocyanic acid
and was also able to solubilize inorganic phosphate. Soil inoculation with MH8b significantly increased
plant biomass as well as the accumulation of Zn (32%) and Cd (94%) in plant shoots. DGGE and PLFA
analysis revealed that the introduced MH8b had only a short-term influence on the structure of indigenous
microbial communities. The plant growth-promoting properties of MH8b and its ability to increase
the metal uptake connected with its long-term survival and its short-term impact on autochthonous
microflora make the strain a good candidate for the promotion of plant growth and phytoremediation
efficiency.
Original language | English |
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Journal | Applied Soil Ecology |
Volume | 63 |
Pages (from-to) | 1-7 |
Number of pages | 7 |
ISSN | 0929-1393 |
DOIs | |
Publication status | Published - Jan 2013 |
MoE publication type | A1 Journal article-refereed |
Fields of Science
- 1172 Environmental sciences