Scientific Blog

April 17, 2017 in Bio-informatic

[Playing with Data] 607 pylori part II: getting the data ready

In the previous post we had a look at some interesting features of Helicobacter pylori. Now it is time to finally get our hands on the data. This post will present the data preparation, how to get everything ready in a comparable way for easy analyses. Now that we know... Read More
April 10, 2017 in Bio-informatic

[Playing with data] 607 pylori part I : the introduction

Every story or study needs an introduction to give some context to what we are look at. When I first started writing the introduction about Helicobacter pylori, I realised quite quickly that my first attempts were massively paraphrasing again and again Wikipedia's summary. Because the Wikipedia article contains most of... Read More
March 5, 2017 in Bio-informatic

[Playing with Data] Comparing Helicobacter pylori genomes

With the upcoming gloom of an eventual unemployment period, I decided to fill my non existent free time with a fun little project I've has in mind for a while; as one of my previous post might have indicated. It is time to tackle it! I have been working with... Read More
September 26, 2016 in Summary

ISME 2016 – Conference Summary

Few weeks back, I attended the International Society for Microbial Ecology conference in Montreal. Over four days I listened to a series of great talks and I wanted to share a summary of the highlights of this conference and also try to not forget everything as it was quite an... Read More

Welcome !

My name is Adrien Assié and  you just reached “the symbiont” ! This website is where I will share thought about symbiosis related topics, current research interests and also other biology hot topics.

I am currently a Postdoctoral Researcher at the Max Planck Institute for Marine Microbiology in the Symbiosis Department. My work is mainly focused on the symbiotic relationships between deep-sea invertebrate and chemoautotrophic bacteria.

I am interested in the symbiotic relationships between deep-sea invertebrates and chemoautotrophic bacteria. These symbioses take place at hydrothermal vents – unique ecosystems where the release of hot fluids rich in inorganic reduced compounds into the surrounding seawater creates a local enrichment in chemical energy in an otherwise energy-limited deep-sea. This allows for a partnership between symbiotic bacteria that harness the energy in reduced chemical compounds to create organic matter, which provides nutrition for their animal hosts. Filamentous bacteria are commonly found in association with different invertebrate hosts, such as Bathymodiolus mussels or Alvinocarid shrimps.

My main projects focus on the study of the bathymodiolin deep-sea mussel symbiosis. In this fascinating study system the mussel is thought to completely rely on bacterial endosymbionts for its nutrition. However, our research has found that other bacteria are also involved in the symbiosis. My work investigates the epsilonproteobacterial epibionts that have been found associated with several species of bathymodiolin mussels. I am interested in their distribution patterns and understanding their metabolic potential and adaptations to a symbiotic life-style. Another system I am currently investigating is the internuclear pathogen infecting these same mussels. In particular, I am interested in understanding what allows this pathogen to invade and persist in the nucleus, an unusual niche to inhabit.

A secondary project I am working on is the characterisation of the ectosymbiotic bacterial populations associated with the hydrothermal vent shrimps Rimicaris. By comparing ectosymbiotic populations sampled at multiple locations throughout the Atlantic, I aim to understand the diversity of the bacterial population and the specificity of the uptake of bacteria by the host.