[Faculty] Fwd: [CSRC.COLLOQUIUM] "The Symbiosis of Viruses and Bacteria Explains the Ecology and Evolution of Microbial Communities"

[Jose Castillo]

<https://lh3.googleusercontent.com/-ZPFNPh16sR0/Wt39FrXUP-I/AAAAAAAAAaw/3wQunGe20lUopmV_ggfPaDwE9cVAgVzxgCLcBGAs/s1600/image001.jpg>

DATE:  *Friday, November 2, 2018*




TITLE:


*The Symbiosis of Viruses and Bacteria Explains the Ecology and Evolution
of Microbial Communities*




TIME:  *3:30PM*



LOCATION:  *GMCS 314*



SPEAKER/BIO:

*Antoni Luque, *
*Assistant Professor, *


*Department of Mathematics & Statistics, SDSU *





ABSTRACT:

Phages are viruses that infect bacteria and are the most abundant
biological entity on Earth, playing major ecological roles in the
environment. Understanding the dynamics of phages and bacteria in
ecosystems would help shape microbial communities, facilitating restoration
efforts as well as developing effective strategies for personalized
medicine. The characterization of phages and bacterial communities,
however, remains a challenge. Here we hypothesize that phage-bacteria
symbionts called lysogens are not subject to the canonical trade-off
between competition and resistance, conferring them a dominant role in
shaping the ecology and evolution of ecosystems. This hypothesis was tested
by developing a mathematical model that combined lytic and lysogenic
viral-bacterial communities as well as an evolutionary model that estimated
the accumulation of integrated phages per bacteria. The model recovered
viral and bacterial abundances observed across eleven ecosystems, and
predicted the trend in bacterial richness as well as the distribution of
prophages per bacteria. The mechanisms studied here about lysogeny and its
prevalence reconciles two conflicting paradigms in viral ecology and
provides a new framework to model phage-bacteria communities.
  HOST:  Jose Castillo

-- 
You received this message because you are subscribed to the Google Groups
"CSRC Colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to csrc.colloquium+unsubscribe at sdsu.edu.
For more options, visit https://groups.google.com/a/sdsu.edu/d/optout.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://engineering.sdsu.edu/pipermail/faculty/attachments/20181030/6e041960/attachment.html>