Silver engineered nanomaterials and ions elicit species-specific O2 consumption responses in plant growth promoting rhizobacteria.

摘要: Metal containing engineered nanomaterials (ENMs) are now commonly used in various industrial and commercial applications. Many of these materials can be transformed during waste water treatment ultimately enter terrestrial ecosystems via agriculturally applied biosolids. It is unclear how important soil microbes will affected by exposure to environmentally relevant, sublethal concentrations ENMs their transformation products (i.e., ions, aggregates, etc.). A method was developed, which puts O2 consumption responses terms viability, tested examining the toxic effects Ag+, Zn2+, Ni2+ ions on plant growth promoting rhizobacterium (PGPR) Bacillus amyloliquefaciens GB03. The then examine toxicity as-synthesized polyvinylpyrrolidone-coated silver ENM (PVP-AgENMs), 100% sulfidized AgENM B. GB03, two additional PGPRs Sinorhizobium meliloti 2011, Pseudomonas putida UW4. S. found have...