| Title |
The Hidden World of Rickettsiales Symbionts: “Candidatus Spectririckettsia obscura,” a Novel Bacterium Found in Brazilian and Indian Paramecium caudatum
|
|---|---|
| Published in |
Microbial Ecology, August 2018
|
| DOI | 10.1007/s00248-018-1243-8 |
| Pubmed ID | |
| Authors |
Michele Castelli, Valentina Serra, Marcus V. X. Senra, Charan K. Basuri, Carlos A. G. Soares, Sergei I. Fokin, Letizia Modeo, Giulio Petroni |
| Abstract |
Symbioses between bacteria and eukaryotes are widespread and may have significant impact on the evolutionary history of symbiotic partners. The order Rickettsiales is a lineage of intracellular Alphaproteobacteria characterized by an obligate association with a wide range of eukaryotic hosts, including several unicellular organisms, such as ciliates and amoebas. In this work, we characterized the Rickettsiales symbionts associated with two different genotypes of the freshwater ciliate Paramecium caudatum originated from freshwater environments in distant geographical areas. Phylogenetic analyses based on 16S rRNA gene showed that the two symbionts are closely related to each other (99.4% identity), belong to the family Rickettsiaceae, but are far-related with respect to previously characterized Rickettsiales. Consequently, they were assigned to a new species of a novel genus, namely "Candidatus Spectririckettsia obscura." Screening on a database of short reads from 16S rRNA gene amplicon-based profiling studies confirmed that bacterial sequences related to the new symbiont are preferentially retrieved from freshwater environments, apparently with extremely scarce occurrence (< 0.1% positive samples). The present work provides new information on the still under-explored biodiversity of Rickettsiales, in particular those associated to ciliate host cells. |
X Demographics
The data shown below were collected from the profiles of 4 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Spain | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 75% |
| Science communicators (journalists, bloggers, editors) | 1 | 25% |
Mendeley readers
The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 22 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 5 | 23% |
| Student > Ph. D. Student | 4 | 18% |
| Professor > Associate Professor | 2 | 9% |
| Professor | 1 | 5% |
| Other | 1 | 5% |
| Other | 2 | 9% |
| Unknown | 7 | 32% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 6 | 27% |
| Biochemistry, Genetics and Molecular Biology | 2 | 9% |
| Veterinary Science and Veterinary Medicine | 1 | 5% |
| Business, Management and Accounting | 1 | 5% |
| Environmental Science | 1 | 5% |
| Other | 2 | 9% |
| Unknown | 9 | 41% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 June 2019.
All research outputs
#16,017,830
of 25,332,933 outputs
Outputs from Microbial Ecology
#1,414
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Outputs of similar age
#193,703
of 337,480 outputs
Outputs of similar age from Microbial Ecology
#26
of 36 outputs
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