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פותח על ידי קלירמאש פתרונות בע"מ -
The genome of Cardinium cBtQ1 provides insights into genome reduction, symbiont motility and its settlement in Bemisia tabaci
Year:
2014
Source of publication :
Genome Biology and Evolution
Authors :
צחורי-פיין, עינת
;
.
Volume :
6
Co-Authors:

Diego Santos-Garcia, 
Pierre-Antoine Rollat-Farnier, 
Francisco Beitia, 
Einat Zchori-Fein, 
Fabrice Vavre, 
Laurence Mouton, 
Andrés Moya, 
Amparo Latorre, 
Francisco J. Silva

Facilitators :
From page:
1013
To page:
1030
(
Total pages:
18
)
Abstract:

Many insects harbor inherited bacterial endosymbionts. Although some of them are not strictly essential and are considered facultative, they can be a key to host survival under specific environmental conditions, such as parasitoid attacks, climate changes, or insecticide pressures. The whitefly Bemisia tabaci is at the top of the list of organisms inflicting agricultural damage and outbreaks, and changes in its distribution may be associated to global warming. In this work, we have sequenced and analyzed the genome of Cardinium cBtQ1, a facultative bacterial endosymbiont of B. tabaci and propose that it belongs to a new taxonomic family, which also includes Candidatus Amoebophilus asiaticus and Cardinium cEper1, endosymbionts of amoeba and wasps, respectively. Reconstruction of their last common ancestors’ gene contents revealed an initial massive gene loss from the free-living ancestor. This was followed in Cardinium by smaller losses, associated with settlement in arthropods. Some of these losses, affecting cofactor and amino acid biosynthetic encoding genes, took place in Cardinium cBtQ1 after its divergence from the Cardinium cEper1 lineage and were related to its settlement in the whitefly and its endosymbionts. Furthermore, the Cardinium cBtQ1 genome displays a large proportion of transposable elements, which have recently inactivated genes and produced chromosomal rearrangements. The genome also contains a chromosomal duplication and a multicopy plasmid, which harbors several genes putatively associated with gliding motility, as well as two other genes encoding proteins with potential insecticidal activity. As gene amplification is very rare in endosymbionts, an important function of these genes cannot be ruled out.

Note:
Related Files :
Amoebophilaceae
Candidatus Cardinium hertigii
gliding motility
IS elements,
עוד תגיות
תוכן קשור
More details
DOI :
10.1093/gbe/evu077
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
53504
Last updated date:
02/03/2022 17:27
Creation date:
15/02/2021 16:59
Scientific Publication
The genome of Cardinium cBtQ1 provides insights into genome reduction, symbiont motility and its settlement in Bemisia tabaci
6

Diego Santos-Garcia, 
Pierre-Antoine Rollat-Farnier, 
Francisco Beitia, 
Einat Zchori-Fein, 
Fabrice Vavre, 
Laurence Mouton, 
Andrés Moya, 
Amparo Latorre, 
Francisco J. Silva

The genome of Cardinium cBtQ1 provides insights into genome reduction, symbiont motility and its settlement in Bemisia tabaci

Many insects harbor inherited bacterial endosymbionts. Although some of them are not strictly essential and are considered facultative, they can be a key to host survival under specific environmental conditions, such as parasitoid attacks, climate changes, or insecticide pressures. The whitefly Bemisia tabaci is at the top of the list of organisms inflicting agricultural damage and outbreaks, and changes in its distribution may be associated to global warming. In this work, we have sequenced and analyzed the genome of Cardinium cBtQ1, a facultative bacterial endosymbiont of B. tabaci and propose that it belongs to a new taxonomic family, which also includes Candidatus Amoebophilus asiaticus and Cardinium cEper1, endosymbionts of amoeba and wasps, respectively. Reconstruction of their last common ancestors’ gene contents revealed an initial massive gene loss from the free-living ancestor. This was followed in Cardinium by smaller losses, associated with settlement in arthropods. Some of these losses, affecting cofactor and amino acid biosynthetic encoding genes, took place in Cardinium cBtQ1 after its divergence from the Cardinium cEper1 lineage and were related to its settlement in the whitefly and its endosymbionts. Furthermore, the Cardinium cBtQ1 genome displays a large proportion of transposable elements, which have recently inactivated genes and produced chromosomal rearrangements. The genome also contains a chromosomal duplication and a multicopy plasmid, which harbors several genes putatively associated with gliding motility, as well as two other genes encoding proteins with potential insecticidal activity. As gene amplification is very rare in endosymbionts, an important function of these genes cannot be ruled out.

Scientific Publication
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