caa a22 4500 605503591 CHVBK 20210128100611.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00253-014-6097-5 doi (NATIONALLICENCE)springer-10.1007/s00253-014-6097-5 Extracellular biogenic nanomaterials inhibit pyoverdine production in Pseudomonas aeruginosa [Elektronische Daten] a novel insight into impacts of metal(loid)s on environmental bacteria [Anee Mohanty, Yang Liu, Liang Yang, Bin Cao] Anthropogenic activities such as mining, smelting, and industrial use have caused serious problems of metal(loid) pollution in nearly every country in the world. A wide range of environmental microorganisms are capable of transforming metal(loid)s into nanomaterials, i.e., biogenic nanomaterials (bio-NMs), in the environment. Although the impacts of various metal(loid)s on the ecosystems have been extensively studied, the potential influence of the bio-NMs generated in the environment to environmental organisms is largely unexplored. Using tellurium nanomaterials transformed from tellurite by a metal-reducing bacterium as model bio-NMs, we demonstrated that the bio-NMs significantly decreased siderophore production in an environmental bacterium Pseudomonas aeruginosa in both planktonic cultures and biofilms. Transcriptomic analysis revealed that the bio-NMs inhibited the expression of genes involved in biosynthesis and transport of siderophores. Siderophores secreted by certain bacteria in microbial communities can be considered as public goods that can be exploited by local communities, playing an important role in shaping microbial communities. The inhibition of siderophore production by the bio-NMs implies that bio-NMs may have an important influence on the ecosystems through altering specific functions of environmental bacteria. Taken together, this study provides a novel insight into the environmental impacts of metal(loid)s. Springer-Verlag Berlin Heidelberg, 2014 Biofilm nationallicence Pseudomonas aeruginosa nationallicence Nanomaterial nationallicence Shewanella oneidensis nationallicence Siderophore nationallicence Econanotoxicity nationallicence Mohanty Anee Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut Liu Yang Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut Yang Liang Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut Cao Bin Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/4(2015-02-01), 1957-1966 0175-7598 99:4<1957 2015 99 253 https://doi.org/10.1007/s00253-014-6097-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-6097-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mohanty Anee Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut NATIONALLICENCE 700 1- Liu Yang Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut NATIONALLICENCE 700 1- Yang Liang Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut NATIONALLICENCE 700 1- Cao Bin Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, Singapore aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/4(2015-02-01), 1957-1966 0175-7598 99:4<1957 2015 99 253