Transcriptional characterization of Vibrio fischeri during colonization of juvenile Euprymna scolopes

Summary The marine bacterium Vibrio fischeri is the monospecific symbiont of the Hawaiian bobtail squid, Euprymna scolopes, and the establishment of this association involves a number of signaling pathways and transcriptional responses between both partners. We report here the first full RNA‐Seq dat...

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Bibliographic Details
Published in:Environmental microbiology 2017-05, Vol.19 (5), p.1845-1856
Main Authors: Thompson, Luke R., Nikolakakis, Kiel, Pan, Shu, Reed, Jennifer, Knight, Rob, Ruby, Edward G.
Format: Article
Language:English
Subjects:
Aliivibrio fischeri - genetics
Aliivibrio fischeri - metabolism
Animals
Aquatic life
Decapodiformes - microbiology
Energy Metabolism - genetics
Euprymna scolopes
Gene expression
Metabolism
RNA, Bacterial - genetics
Scolopes
Signal Transduction
Symbiosis - physiology
Transcriptome - genetics
Vibrio fischeri
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Summary:Summary The marine bacterium Vibrio fischeri is the monospecific symbiont of the Hawaiian bobtail squid, Euprymna scolopes, and the establishment of this association involves a number of signaling pathways and transcriptional responses between both partners. We report here the first full RNA‐Seq dataset representing host‐associated V. fischeri cells from colonized juvenile E. scolopes, as well as comparative transcriptomes under both laboratory and simulated marine planktonic conditions. These data elucidate the broad transcriptional changes that these bacteria undergo during the early stages of symbiotic colonization. We report several previously undescribed and unexpected transcriptional responses within the early stages of this symbiosis, including gene expression patterns consistent with biochemical stresses inside the host, and metabolic patterns distinct from those reported in associations with adult animals. Integration of these transcriptional data with a recently developed metabolic model of V. fischeri provides us with a clearer picture of the metabolic state of symbionts within the juvenile host, including their possible carbon sources. Taken together, these results expand our understanding of the early stages of the squid–vibrio symbiosis, and more generally inform the transcriptional responses underlying the activities of marine microbes during host colonization.
ISSN:1462-2912
1462-2920
1462-2920
DOI:10.1111/1462-2920.13684