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Decomposition of Cr(V)-diols to Cr(III) Complexes by Arthrobacter oxydans
We demonstrated previously that Cr(VI) is readily reduced to oxoCr(V)-diols at the surface of Arthrobacter oxydans--a Gram-positive aerobic bacteria isolated from Columbia basalt rocks originated from a highly contaminated site in the USA. Here, we report an electron spin resonance (ESR) study of Cr...
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Published in: | Microbial ecology 2009-02, Vol.57 (2), p.360-366 |
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container_title | Microbial ecology |
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creator | Tsibakhashvili, Nelly Y Kalabegishvili, Tamaz L Rcheulishvili, Alexander N Murusidze, Ivane G Rcheulishvili, Olia A Kerkenjia, Salome M Holman, Hoi-Ying N |
description | We demonstrated previously that Cr(VI) is readily reduced to oxoCr(V)-diols at the surface of Arthrobacter oxydans--a Gram-positive aerobic bacteria isolated from Columbia basalt rocks originated from a highly contaminated site in the USA. Here, we report an electron spin resonance (ESR) study of Cr(III) hydroxide formation from Cr(V)-diols by this bacterial strain as cells were exposed to 35, 200, and 400 mg/L of Cr(VI) under aerobic conditions as a batch culture and as lyophilized cells. The time-dependent ESR measurements show that the half-time of Cr(III) formation is almost equal to that of Cr(V) decomposition, which is in the range of 3-6 days for all cases. This rate is at least 300 times slower than that of Cr(V) formation. Additionally, atomic absorption spectrometry was also employed to examine the time course of total chromium in bacterial cells. This is the first time the kinetics of Cr(III) complexes formation in bacteria is evaluated. |
doi_str_mv | 10.1007/s00248-008-9476-6 |
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Here, we report an electron spin resonance (ESR) study of Cr(III) hydroxide formation from Cr(V)-diols by this bacterial strain as cells were exposed to 35, 200, and 400 mg/L of Cr(VI) under aerobic conditions as a batch culture and as lyophilized cells. The time-dependent ESR measurements show that the half-time of Cr(III) formation is almost equal to that of Cr(V) decomposition, which is in the range of 3-6 days for all cases. This rate is at least 300 times slower than that of Cr(V) formation. Additionally, atomic absorption spectrometry was also employed to examine the time course of total chromium in bacterial cells. This is the first time the kinetics of Cr(III) complexes formation in bacteria is evaluated.</description><identifier>ISSN: 0095-3628</identifier><identifier>EISSN: 1432-184X</identifier><identifier>DOI: 10.1007/s00248-008-9476-6</identifier><identifier>PMID: 19067030</identifier><identifier>CODEN: MCBEBU</identifier><language>eng</language><publisher>New York: New York : Springer-Verlag</publisher><subject>Aerobic bacteria ; Aerobic conditions ; Arthrobacter ; Arthrobacter - metabolism ; Arthrobacter oxydans ; Atomic absorption spectroscopy ; Bacteria ; Basalt ; Biodegradation, Environmental ; Biological and medical sciences ; Biomedical and Life Sciences ; Cell growth ; Cell walls ; Chromium ; Chromium Compounds - metabolism ; Decomposition ; Ecology ; Electron paramagnetic resonance ; Electron Spin Resonance Spectroscopy ; Fundamental and applied biological sciences. Psychology ; Geoecology/Natural Processes ; Hydroxides ; Kinetics ; Life Sciences ; Liquids ; Microbial Ecology ; Microbiology ; Models, Biological ; Nature Conservation ; Original Article ; SPECIAL SECTION ; Spectral analysis ; Spectrometry ; Spectrophotometry, Atomic ; Time Factors ; Toxicity ; Water Quality/Water Pollution</subject><ispartof>Microbial ecology, 2009-02, Vol.57 (2), p.360-366</ispartof><rights>2009 Springer Science+Business Media, Inc.</rights><rights>Springer Science+Business Media, LLC 2008</rights><rights>2009 INIST-CNRS</rights><rights>Springer Science+Business Media, LLC 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c477t-61e48c7a54a802cfe54c1dc910084c69896ff034eb18055291823b14c70d13473</citedby><cites>FETCH-LOGICAL-c477t-61e48c7a54a802cfe54c1dc910084c69896ff034eb18055291823b14c70d13473</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/40605671$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/40605671$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>309,310,314,776,780,785,786,23909,23910,25118,27901,27902,58213,58446</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21152766$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19067030$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tsibakhashvili, Nelly Y</creatorcontrib><creatorcontrib>Kalabegishvili, Tamaz L</creatorcontrib><creatorcontrib>Rcheulishvili, Alexander N</creatorcontrib><creatorcontrib>Murusidze, Ivane G</creatorcontrib><creatorcontrib>Rcheulishvili, Olia A</creatorcontrib><creatorcontrib>Kerkenjia, Salome M</creatorcontrib><creatorcontrib>Holman, Hoi-Ying N</creatorcontrib><title>Decomposition of Cr(V)-diols to Cr(III) Complexes by Arthrobacter oxydans</title><title>Microbial ecology</title><addtitle>Microb Ecol</addtitle><addtitle>Microb Ecol</addtitle><description>We demonstrated previously that Cr(VI) is readily reduced to oxoCr(V)-diols at the surface of Arthrobacter oxydans--a Gram-positive aerobic bacteria isolated from Columbia basalt rocks originated from a highly contaminated site in the USA. Here, we report an electron spin resonance (ESR) study of Cr(III) hydroxide formation from Cr(V)-diols by this bacterial strain as cells were exposed to 35, 200, and 400 mg/L of Cr(VI) under aerobic conditions as a batch culture and as lyophilized cells. The time-dependent ESR measurements show that the half-time of Cr(III) formation is almost equal to that of Cr(V) decomposition, which is in the range of 3-6 days for all cases. This rate is at least 300 times slower than that of Cr(V) formation. Additionally, atomic absorption spectrometry was also employed to examine the time course of total chromium in bacterial cells. This is the first time the kinetics of Cr(III) complexes formation in bacteria is evaluated.</description><subject>Aerobic bacteria</subject><subject>Aerobic conditions</subject><subject>Arthrobacter</subject><subject>Arthrobacter - metabolism</subject><subject>Arthrobacter oxydans</subject><subject>Atomic absorption spectroscopy</subject><subject>Bacteria</subject><subject>Basalt</subject><subject>Biodegradation, Environmental</subject><subject>Biological and medical sciences</subject><subject>Biomedical and Life Sciences</subject><subject>Cell growth</subject><subject>Cell walls</subject><subject>Chromium</subject><subject>Chromium Compounds - metabolism</subject><subject>Decomposition</subject><subject>Ecology</subject><subject>Electron paramagnetic resonance</subject><subject>Electron Spin Resonance Spectroscopy</subject><subject>Fundamental and applied biological sciences. 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Ecol</stitle><addtitle>Microb Ecol</addtitle><date>2009-02-01</date><risdate>2009</risdate><volume>57</volume><issue>2</issue><spage>360</spage><epage>366</epage><pages>360-366</pages><issn>0095-3628</issn><eissn>1432-184X</eissn><coden>MCBEBU</coden><abstract>We demonstrated previously that Cr(VI) is readily reduced to oxoCr(V)-diols at the surface of Arthrobacter oxydans--a Gram-positive aerobic bacteria isolated from Columbia basalt rocks originated from a highly contaminated site in the USA. Here, we report an electron spin resonance (ESR) study of Cr(III) hydroxide formation from Cr(V)-diols by this bacterial strain as cells were exposed to 35, 200, and 400 mg/L of Cr(VI) under aerobic conditions as a batch culture and as lyophilized cells. The time-dependent ESR measurements show that the half-time of Cr(III) formation is almost equal to that of Cr(V) decomposition, which is in the range of 3-6 days for all cases. This rate is at least 300 times slower than that of Cr(V) formation. Additionally, atomic absorption spectrometry was also employed to examine the time course of total chromium in bacterial cells. This is the first time the kinetics of Cr(III) complexes formation in bacteria is evaluated.</abstract><cop>New York</cop><pub>New York : Springer-Verlag</pub><pmid>19067030</pmid><doi>10.1007/s00248-008-9476-6</doi><tpages>7</tpages></addata></record> |
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subjects | Aerobic bacteria Aerobic conditions Arthrobacter Arthrobacter - metabolism Arthrobacter oxydans Atomic absorption spectroscopy Bacteria Basalt Biodegradation, Environmental Biological and medical sciences Biomedical and Life Sciences Cell growth Cell walls Chromium Chromium Compounds - metabolism Decomposition Ecology Electron paramagnetic resonance Electron Spin Resonance Spectroscopy Fundamental and applied biological sciences. Psychology Geoecology/Natural Processes Hydroxides Kinetics Life Sciences Liquids Microbial Ecology Microbiology Models, Biological Nature Conservation Original Article SPECIAL SECTION Spectral analysis Spectrometry Spectrophotometry, Atomic Time Factors Toxicity Water Quality/Water Pollution |
title | Decomposition of Cr(V)-diols to Cr(III) Complexes by Arthrobacter oxydans |
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