Title |
Back from the dead; the curious tale of the predatory cyanobacterium Vampirovibrio chlorellavorus
|
---|---|
Published in |
PeerJ, May 2015
|
DOI | 10.7717/peerj.968 |
Pubmed ID | |
Authors |
Rochelle M. Soo, Ben J. Woodcroft, Donovan H. Parks, Gene W. Tyson, Philip Hugenholtz |
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 the Melainabacteria based on a 16S rRNA sequence recovered from a lyophilised co-culture 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 the Melainabacteria. 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. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Australia | 9 | 23% |
United States | 6 | 15% |
Canada | 2 | 5% |
United Kingdom | 1 | 3% |
Germany | 1 | 3% |
Singapore | 1 | 3% |
Spain | 1 | 3% |
Netherlands | 1 | 3% |
Unknown | 17 | 44% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 21 | 54% |
Members of the public | 15 | 38% |
Practitioners (doctors, other healthcare professionals) | 2 | 5% |
Science communicators (journalists, bloggers, editors) | 1 | 3% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 1 | <1% |
Belgium | 1 | <1% |
Australia | 1 | <1% |
Unknown | 144 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 36 | 24% |
Researcher | 25 | 17% |
Student > Master | 17 | 12% |
Student > Doctoral Student | 14 | 10% |
Student > Bachelor | 9 | 6% |
Other | 23 | 16% |
Unknown | 23 | 16% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 45 | 31% |
Biochemistry, Genetics and Molecular Biology | 37 | 25% |
Immunology and Microbiology | 11 | 7% |
Environmental Science | 8 | 5% |
Engineering | 6 | 4% |
Other | 8 | 5% |
Unknown | 32 | 22% |