Dynamics of the bacterial community associated with Phaeodactylum tricornutum cultures

Moejes, F. W.; Popa, O.; Succurro, A.; Maguire, J.; Ebenhoeh, O.

doi:10.1101/077768

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bioRxiv · 10.1101/077768

Dynamics of the bacterial community associated with Phaeodactylum tricornutum cultures

Moejes, F. W.·Popa, O.·Succurro, A.·Maguire, J.·Ebenhoeh, O.

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Abstract

The pennate diatom Phaeodactylum tricornutum is a model organism able to synthesise industrially-relevant molecules. Large-scale monocultures are prone to bio-contamination, however, little is known about the identity of the invading organisms. To gain insight into the bacterial community associated with diatoms, we translated the complexity of a natural system into reproducible experiments where we investigated the microbiome of P. tricornutum cultures. The results revealed a dynamic bacterial community that changed over time and in differing media conditions. We propose a network of putative interactions between P. tricornutum and the main bacterial factions, which is translated into a set of ordinary differential equations constituting a computational dynamic model. The proposed mathematical model is able to capture the population dynamics, further supporting the hypothesised interactions. The interdisciplinary approach implemented provides a framework for understanding the dynamics of diatom-associated microbial communities, and provides a foundation for further systematic investigations of host-microbe interactions.

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Moejes, F. W., Popa, O., Succurro, A., Maguire, J., Ebenhoeh, O.. 2016-10-14. Dynamics of the bacterial community associated with Phaeodactylum tricornutum cultures. https://doi.org/10.1101/077768

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