Back from the dead; the curious tale of the predatory cyanobacterium Vampirovibrio chlorellavorus.

Soo, Rochelle M., Woodcroft, Ben J., Parks, Donovan H., Tyson, Gene W. and Hugenholtz, Philip (2015) Back from the dead; the curious tale of the predatory cyanobacterium Vampirovibrio chlorellavorus.. PeerJ, 2015 5: Art. No.: e968-Art. No.: e968. doi:10.7717/peerj.968

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Author Soo, Rochelle M.
Woodcroft, Ben J.
Parks, Donovan H.
Tyson, Gene W.
Hugenholtz, Philip
Title Back from the dead; the curious tale of the predatory cyanobacterium Vampirovibrio chlorellavorus.
Journal name PeerJ   Check publisher's open access policy
ISSN 2167-8359
Publication date 2015-05-01
Year available 2015
Sub-type Article (original research)
DOI 10.7717/peerj.968
Open Access Status DOI
Volume 2015
Issue 5
Start page Art. No.: e968
End page Art. No.: e968
Total pages 22
Place of publication London, United Kingdom
Publisher PeerJ
Language eng
Subject 2800 Neuroscience
1300 Biochemistry, Genetics and Molecular Biology
1100 Agricultural and Biological Sciences
Abstract An uncultured non-photosynthetic basal lineage of the Cyanobacteria, the Melainabacteria, was recently characterised by metagenomic analyses of aphotic environmental samples. However, a predatory bacterium, Vampirovibrio chlorellavorus, originally described in 1972 appears to be the first cultured representative of theMelainabacteria based on a 16S rRNA sequence recovered froma lyophilised coculture of the organism. Here, we sequenced the genome of V. chlorellavorus directly from 36 year-old lyophilised material that could not be resuscitated confirming its identity as a member of theMelainabacteria.We identified attributes in the genome that likely allow V. chlorellavorus to function as an obligate predator of the microalga Chlorella vulgaris, and predict that it is the first described predator to use an Agrobacterium tumefaciens-like conjugative type IV secretion system to invade its host. V. chlorellavorus is the first cyanobacterium recognised to have a predatory lifestyle and further supports the assertion that Melainabacteria are non-photosynthetic.
Formatted abstract
An uncultured non-photosynthetic basal lineage of the Cyanobacteria, the Melainabacteria, was recently characterised by metagenomic analyses of aphotic environmental samples. However, a predatory bacterium, Vampirovibrio chlorellavorus, originally described in 1972 appears to be the first cultured representative of theMelainabacteria based on a 16S rRNA sequence recovered froma lyophilised coculture of the organism. Here, we sequenced the genome of V. chlorellavorus directly from 36 year-old lyophilised material that could not be resuscitated confirming its identity as a member of theMelainabacteria.We identified attributes in the genome that likely allow V. chlorellavorus to function as an obligate predator of the microalga Chlorella vulgaris, and predict that it is the first described predator to use an Agrobacterium tumefaciens-like conjugative type IV secretion system to invade its host. V. chlorellavorus is the first cyanobacterium recognised to have a predatory lifestyle and further supports the assertion that Melainabacteria are non-photosynthetic
Keyword Chlorella vulgaris
Cyanobacteria
Epibiotic
Melainabacteria
Obligate Predator
Predatory bacteria
Vampirovibrio chlorellavorus
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID ARC-DP120103498
ARC-DP1093175
Institutional Status UQ

 
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Created: Fri, 05 Jun 2015, 19:38:58 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences