Extracellular production of tellurium nanoparticles by the photosynthetic bacterium Rhodobacter capsulatus

Journal of Hazardous Materials
Roberto BorgheseDavide Zannoni

Abstract

The toxic oxyanion tellurite (TeO3(2-)) is acquired by cells of Rhodobacter capsulatus grown anaerobically in the light, via acetate permease ActP2 and then reduced to Te(0) in the cytoplasm as needle-like black precipitates. Interestingly, photosynthetic cultures of R. capsulatus can also generate Te(0) nanoprecipitates (TeNPs) outside the cells upon addition of the redox mediator lawsone (2-hydroxy-1,4-naphtoquinone). TeNPs generation kinetics were monitored to define the optimal conditions to produce TeNPs as a function of various carbon sources and lawsone concentration. We report that growing cultures over a 10 days period with daily additions of 1mM tellurite led to the accumulation in the growth medium of TeNPs with dimensions from 200 up to 600-700 nm in length as determined by atomic force microscopy (AFM). This result suggests that nucleation of TeNPs takes place over the entire cell growth period although the addition of new tellurium Te(0) to pre-formed TeNPs is the main strategy used by R. capsulatus to generate TeNPs outside the cells. Finally, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) analysis of TeNPs indicate they are coated with an organic material which keeps the particles ...Continue Reading

References

Nov 7, 1975·Archives of Microbiology·P F WeaverH Gest
Sep 15, 1992·Proceedings of the National Academy of Sciences of the United States of America·S Brown
Oct 27, 2001·Applied and Environmental Microbiology·M SabatyA Vermeglio
Sep 12, 2002·Journal of Microbiological Methods·K MaquelinG J Puppels
Dec 24, 2002·The Journal of Biological Chemistry·Atsushi ArakakiTadashi Matsunaga
Jan 9, 2004·Applied and Environmental Microbiology·Ronald S OremlandSeamus Curran
Jul 6, 2006·Applied and Environmental Microbiology·Julius T CsotonyiVladimir Yurkov
Feb 6, 2007·Applied and Environmental Microbiology·Shaun M BaesmanRonald S Oremland
Apr 19, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Zhisong LuXu Yang
Dec 15, 2010·Bioresource Technology·Xiujuan WangHong Lv
May 12, 2011·Cellular and Molecular Life Sciences : CMLS·Bence GyörgyEdit I Buzás
Jul 15, 2011·Colloids and Surfaces. B, Biointerfaces·Wenjie ZhangDaping Li
Sep 13, 2011·Biotechnology Advances·Raymond J TurnerDavide Zannoni
Dec 24, 2011·Environmental Science & Technology·Ling-Ling WangXiang-Ke Wang
Dec 24, 2014·Environmental Science & Technology·Rohan JainPiet N L Lens

❮ Previous
Next ❯

Citations

Apr 7, 2020·Environmental Microbiology·Xinjin LiangGeoffrey Michael Gadd
May 15, 2018·Environmental Science and Pollution Research International·Zhiwei WangHao Zhou
May 31, 2018·Iranian Journal of Biotechnology·Mojtaba ShakibaieHamid Forootanfar
May 26, 2017·Frontiers in Microbiology·Luciana C Vitorino, Layara A Bessa
Jul 22, 2019·Applied Microbiology and Biotechnology·Xinjin LiangGeoffrey M Gadd
Jan 28, 2021·International Journal of Molecular Sciences·Marjorie C ZamboninoSi Amar Dahoumane
Nov 7, 2019·ACS Nano·Milan GautamJeong Hoon Byeon
Nov 18, 2020·Mini Reviews in Medicinal Chemistry·Shilpi SrivastavaAtul Bhargava

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.