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Streptomyces exploration is triggered by fungal interactions and volatile signals

ABSTRACT: We discovered the bacteria Streptomyces venezuelae can display a new form of growth termed exploration, and we used NGS to compare transcriptome profiles of cells demonstrating exploration versus static cells (not demonstrating exploration)

ORGANISM(S): Streptomyces venezuelae ATCC 10712

PROVIDER: GSE86378 | GEO | 2017/02/14

SECONDARY ACCESSION(S): PRJNA341574

REPOSITORIES: GEO

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Streptomyces exploration is triggered by fungal interactions and volatile signals.

Project description:It has long been thought that the life cycle of Streptomyces bacteria encompasses three developmental stages: vegetative hyphae, aerial hyphae and spores. Here, we show interactions between Streptomyces and fungi trigger a previously unobserved mode of Streptomyces development. We term these Streptomyces cells 'explorers', for their ability to adopt a non-branching vegetative hyphal conformation and rapidly transverse solid surfaces. Fungi trigger Streptomyces exploratory growth in part by altering the composition of the growth medium, and Streptomyces explorer cells can communicate this exploratory behaviour to other physically separated streptomycetes using an airborne volatile organic compound (VOC). These results reveal that interkingdom interactions can trigger novel developmental behaviours in bacteria, here, causing Streptomyces to deviate from its classically-defined life cycle. Furthermore, this work provides evidence that VOCs can act as long-range communication signals capable of propagating microbial morphological switches.

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Transcriptional changes over time in exploring cultures of Streptomyces venezuelae [three growth timepoints]

Project description:We isolated and sequenced mRNA from Streptomyces venezuelae grown on solid medium that promotes exploratory behaviour in this bacterial species. The data was analyzed using DeSeq2 to identify genes that undergo changes in expression over time.

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Transcriptional changes over time in exploring cultures of Streptomyces venezuelae

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