Asset Details
Do you wish to reserve the book?
The selective pressures on the microbial community in a metal-contaminated aquifer
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
The selective pressures on the microbial community in a metal-contaminated aquifer
Do you wish to request the book?
The selective pressures on the microbial community in a metal-contaminated aquifer
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
The selective pressures on the microbial community in a metal-contaminated aquifer
2019
Overview
In many environments, toxic compounds restrict which microorganisms persist. However, in complex mixtures of inhibitory compounds, it is challenging to determine which specific compounds cause changes in abundance and prevent some microorganisms from growing. We focused on a contaminated aquifer in Oak Ridge, Tennessee, USA that has large gradients of pH and widely varying concentrations of uranium, nitrate, and many other inorganic ions. In the most contaminated wells, the microbial community is enriched in the
Rhodanobacter
genus.
Rhodanobacter
abundance is positively correlated with low pH and high concentrations of uranium and 13 other ions and we sought to determine which of these ions are selective pressures that favor the growth of
Rhodanobacter
over other taxa. Of these ions, low pH and high UO
2
2+
, Mn
2+
, Al
3+
, Cd
2+
, Zn
2+
, Co
2+
, and Ni
2+
are both (a) selectively inhibitory of a
Pseudomonas
isolate from an uncontaminated well vs. a
Rhodanobacter
isolate from a contaminated well, and (b) reach toxic concentrations (for the
Pseudomonas
isolate) in the
Rhodanobacter
-dominated wells. We used mixtures of ions to simulate the groundwater conditions in the most contaminated wells and verified that few isolates aside from
Rhodanobacter
can tolerate these eight ions. These results clarify which ions are likely causal factors that impact the microbial community at this field site and are not merely correlated with taxonomic shifts. Furthermore, our general high-throughput approach can be applied to other environments, isolates, and conditions to systematically help identify selective pressures on microbial communities.
Publisher
Nature Publishing Group UK,Oxford University Press,Nature Publishing Group
Subject
/ 42
/ 45
/ 45/23
/ 64
/ Aluminum
/ Aquifers
/ Biodegradation, Environmental
/ Biomedical and Life Sciences
/ Cobalt
/ Ecology
/ Gammaproteobacteria - classification
/ Gammaproteobacteria - growth & development
/ Gammaproteobacteria - isolation & purification
/ Gammaproteobacteria - metabolism
/ Ions
/ Microbial Genetics and Genomics
/ Mixtures
/ Pseudomonas - classification
/ Pseudomonas - growth & development
/ Pseudomonas - isolation & purification
/ Uranium
/ Wells
/ Zinc
