For more information, visit:
http://etiennelowdecarie.org/2016/10/03/phd-studentship-extremophiles-everywhere-and-the-limits-
of-microbial-life/

Deadline: midnight on Sunday 8 January 2017

Supervisory team:
Etienne Low-Décarie
Terry McGenity
Charles Cockell

Background
Life is almost ubiquitous on Earth: organisms live wherever there is liquid 
water. However, whether all 
types of microorganisms can be found everywhere is a longstanding debate, with 
important implications 
for the health of humans and their environment.  Microbes must be put on the 
map! Measuring the 
capacity to grow in extreme conditions is an excellent way to test for the 
diversity of types found in 
natural environments.

Research goal
Determine the abundance of extremophiles in benign environments.  Compare the 
physiological breadth 
of organisms found in these benign environments to organisms isolated from 
extreme environments.

Research methodology
The student will conduct field sampling at selected marine and freshwater sites 
across the UK and at 
two sites hosting a diversity of extremes (the salt deposits of Boulby 
Underground Laboratory, UK, 
including MgCl2-rich brines, and acidic volcanic habitats in Iceland).  Serial 
dilutions of samples from 
these sites will be cultured in a wide range of extreme conditions (pH, 
salinity, MgCl2, etc.) in the lab to 
measure the abundance of extremophiles in these sites.  Isolated extremophiles 
will be characterized 
using both traditional microbiological techniques and state-of-the-art DNA 
sequencing approaches.  
The global applicability of findings from the field and the lab will be 
investigated using computational 
approaches to query growing databases of DNA-sequences that have worldwide 
coverage.

Training
In addition to training as part of EnvEast and the University of Essex graduate 
training program, which 
includes training in statistical analysis and science communication, the 
student will receive training in: 
field sampling approaches, innovative microbial culturing techniques, 
high-throughput robotic liquid 
handling and culture characterization, molecular techniques for the analysis of 
DNA sequences and 
bioinformatics.



Person specification

We seek a highly motivated individual who is enthusiastic about problem 
solving. The student will have a 
degree in biology, in a branch of environmental science or in engineering. The 
student will be enrolled in 
the PhD program of the School of Biological Sciences of the University of Essex 
(http://www2.essex.ac.uk/academic/offices/graduate/) and will benefit from 
professional development 
through Proficio (http://www.essex.ac.uk/study/pgr/proficio/default.aspx).

Experience with microbial cultures or sequence analysis would be an asset, as 
would a valid UK/EU 
driver’s license.



Funding
Successful candidates who meet RCUK’s eligibility criteria will be awarded a 
NERC studentship. In most 
cases, UK and EU nationals who have been resident in the UK for 3 years are 
eligible for a full award. In 
2016/17, the stipend was £14,296.

Shortlisted applicants will be invited to an interview day on the 17th or 18th 
February 2016.



For further information, please visit www.enveast.ac.uk/apply.

www.enveast.ac.uk/projects

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