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dc.contributor.authorField, Erin K.
dc.contributor.authorBlaskovich, John P.
dc.contributor.authorPeyton, Brent M.
dc.contributor.authorGerlach, Robin
dc.date.accessioned2018-11-07T21:40:40Z
dc.date.available2018-11-07T21:40:40Z
dc.date.issued2018-08
dc.identifier.citationField, Erin K., John P. Blaskovich, Brent M. Peyton, and Robin Gerlach. “Carbon-Dependent Chromate Toxicity Mechanism in an Environmental Arthrobacter Isolate.” Journal of Hazardous Materials 355 (August 2018): 162–169. doi:10.1016/j.jhazmat.2018.05.020.en_US
dc.identifier.issn0304-3894
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/14997
dc.description.abstractArthrobacter spp. are widespread in soil systems and well-known for their Cr(VI) reduction capabilities making them attractive candidates for in situ bioremediation efforts. Cellulose drives carbon flow in soil systems; yet, most laboratory studies evaluate Arthrobacter-Cr(VI) interactions solely with nutrient-rich media or glucose. This study aims to determine how various cellulose degradation products and biostimulation substrates influence Cr(VI) toxicity, reduction, and microbial growth of an environmental Arthrobacter sp. isolate. Laboratory culture-based studies suggest there is a carbon-dependent Cr(VI) toxicity mechanism that affects subsequent Cr(VI) reduction by strain LLW01. Strain LLW01 could only grow in the presence of, and reduce, 50 μM Cr(VI) when glucose or lactate were provided. Compared to lactate, Cr(VI) was at least 30-fold and 10-fold more toxic when ethanol or butyrate was the sole carbon source, respectively. The addition of sulfate mitigated toxicity somewhat, but had no effect on the extent of Cr(VI) reduction. Cell viability studies indicated that a small fraction of cells were viable after 8 days suggesting cell growth and subsequent Cr(VI) reduction may resume. These results suggest when designing bioremediation strategies with Arthrobacter spp. such as strain LLW01, carbon sources such as glucose and lactate should be considered over ethanol and butyrate.en_US
dc.language.isoenen_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleCarbon-dependent chromate toxicity mechanism in an environmental Arthrobacter isolateen_US
dc.typeArticleen_US
mus.citation.extentfirstpage162en_US
mus.citation.extentlastpage169en_US
mus.citation.journaltitleJournal of Hazardous Materialsen_US
mus.citation.volume355en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1016/j.jhazmat.2018.05.020en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage6en_US


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