Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Dorothy L. Parker"'
Publikováno v:
Frontiers in Microbiology, Vol 2 (2011)
Chromium is a contaminant of concern that is found in drinking water in its soluble, hexavalent form [Cr(VI)] and that is known to be toxic to eukaryotes and prokaryotes. Trivalent chromium [Cr(III)] is thought to be largely harmless due to its low s
Externí odkaz:
https://doaj.org/article/ef8dcf26846c4576bbcddd609b6eeb96
Publikováno v:
Journal of microbiological methods. 135
Our knowledge of the biological and environmental reactivity of siderophores is limited by the difficulty and cost of obtaining reasonable quantities by purification or synthesis. In this note, we describe a modified procedure for the low-cost, mg-sc
Autor:
Andrew S. Madison, Thomas G. Spiro, Cristina N. Butterfield, Alexandra V. Soldatova, Dorothy L. Parker, Kati Geszvain, Richard E. Davis, Bradley M. Tebo, George W. Luther, Sung Woo Lee
Publikováno v:
Biochemical Society Transactions. 40:1244-1248
Micro-organisms capable of oxidizing the redox-active transition metal manganese play an important role in the biogeochemical cycle of manganese. In the present mini-review, we focus specifically on Mn(II)-oxidizing bacteria. The mechanisms by which
Autor:
Rebecca Verity, Mylene L. Mozafarzadeh, Takami Morita, James K. McCarthy, Dorothy L. Parker, Bradley M. Tebo
Publikováno v:
Geochimica et Cosmochimica Acta. 71:5672-5683
To examine the pathways that form Mn(III) and Mn(IV) in the Mn(II)-oxidizing bacterial strains Pseudomonas putida GB-1 and MnB1, and to test whether the siderophore pyoverdine (PVD) inhibits Mn(IV)O2 formation, cultures were subjected to various prot
Publikováno v:
Geochimica et Cosmochimica Acta. 68:4809-4820
The possible roles of siderophores (high affinity chelators of iron(III)) in the biogeochemistry of manganese remain unknown. Here we investigate the interaction of Mn(III) with a pyoverdine-type siderophore (PVDMnB1) produced by the model Mn(II)-oxi
Autor:
John R. Bargar, Dorothy L. Parker, Karen J. Murray, Rebecca Verity, Brian G. Clement, Bradley M. Tebo, Samuel M. Webb, Gregory J. Dick
Publikováno v:
Annual Review of Earth and Planetary Sciences. 32:287-328
▪ Abstract Manganese(IV) oxides produced through microbial activity, i.e., biogenic Mn oxides or Mn biooxides, are believed to be the most abundant and highly reactive Mn oxide phases in the environment. They mediate redox reactions with organic an
Autor:
Bradley M. Tebo, Justin W. Torpey, Christelle Gruffaz, Kati Geszvain, Sung Woo Lee, Jean Marie Meyer, Richard E. Davis, Dorothy L. Parker
Publikováno v:
Frontiers in Microbiology
Frontiers in Microbiology, Vol 5 (2014)
Frontiers in Microbiology, Vol 5 (2014)
When iron-starved, the Mn(II)-oxidizing bacteria Pseudomonas putida strains GB-1 and MnB1 produce pyoverdines (PVDGB-1 and PVDMnB1), siderophores that both influence iron uptake and inhibit manganese(II) oxidation by these strains. To explore the pro
Publikováno v:
Frontiers in Microbiology
Frontiers in Microbiology, Vol 5 (2014)
Frontiers in Microbiology, Vol 5 (2014)
Pseudomonas putida GB-1 is a Mn(II)-oxidizing bacterium that produces pyoverdine-type siderophores (PVDs), which facilitate the uptake of Fe(III) but also influence MnO2 formation. Recently, a non-ribosomal peptide synthetase mutant that does not syn
Publikováno v:
Applied and Environmental Microbiology. 67:2810-2818
The relationship between toxigenicity and phylogeny within the cyanobacterial genus Microcystis is unclear. To investigate this issue, we have designed PCR primers for the N -methyltransferase (NMT) domain of the microcystin synthetase gene mcyA and
Autor:
Joshua J. Flom, Lynn Egan, Lal Chand Rai, Jennifer E. Mihalick, John L. Plude, Har Darshan Kumar, Thomas P. Clark, Michelle J. Plude, Dorothy L. Parker
Publikováno v:
Journal of Applied Phycology. 12:219-224
The sorption of cadmium (II), copper (II), lead (II),manganese (II), and zinc (II) by purified capsularpolysaccharide from the cyanobacterium Microcystis aeruginosafo. flos-aquae strainC3-40 was examined by four methods: equilibriumdialysis, metal re