Candidatus Cardinium: Difference between revisions
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[[File:IJE39920-1.jpeg|200px|thumb|right|Fig. 1. Electron micrographs of ‘Candidatus Cardinium’ in ovaries of Encarsia parasitoid wasps. (a) Bacteria in a follicle cell of E. hispida. (b–d) Bacteria in sexual E. pergandiella nurse cells. (e) Bacteria in an E. hispida oocyte. Arrowheads point to MLSs; l, lipid-filled vacuoles in the oocyte; m, mitochondrion; p, protein. Bars, 0·25 µm.]] | [[File:IJE39920-1.jpeg|200px|thumb|right|Fig. 1. Electron micrographs of ‘Candidatus Cardinium’ in ovaries of Encarsia parasitoid wasps. (a) Bacteria in a follicle cell of E. hispida. (b–d) Bacteria in sexual E. pergandiella nurse cells. (e) Bacteria in an E. hispida oocyte. Arrowheads point to MLSs; l, lipid-filled vacuoles in the oocyte; m, mitochondrion; p, protein. Bars, 0·25 µm.[http://ijsb.sgmjournals.org/cgi/content/full/54/3/961]]] | ||
==Classification== | ==Classification== |
Revision as of 13:31, 24 April 2011
Classification
Domain (Bacteria); Super Phylum (Bacteroidetes/Chlorobi group); Phylum (Cytophaga-Flavobacterium-Bacteroides); Class (Bacteroidetes); Order (Bacteroidales); Family (Bacteroidaceae); Genus (Candidatus Cardinium)
Species
Candidatus Cardinium
Description and Significance
‘Candidatus Cardinium’ is a bacterium from the Bacteriodetes group. It is involved in reproduction alterations of arthropod host organisms including cytoplasmic incompatibility, parthenogenesis, and feminization.
This bacterium is often located within the reproductive tissues of the host. It is often found with other arthropod-associated Bacteroidetes that alter host biology. Distantly related hosts can harbor closely related Cardinium. Closely related Cardinium also tend to cluster with closely related hosts.
Genome Structure
‘Candidatus Cardinium’ has linear 1364 bp DNA sequence. There are 3 main varieties of Cardinium which differ in their 16s rRNA sequences.
Cell Structure, Metabolism and Life Cycle
Ecology and Pathogenesis
This bacteria is located within the reproductive tissues of the host organism. Commonly found in arthropods. Often transmitted from mother to daughter.‘Candidatus Cardinium' has the capacity to feminize the host organism. Feminization can be functional or genetic alone. In some cases, it has been shown to increase fecundity of the female host. This endosymbiont does not appear to have a negative effect on the host. It has been hypothesized that it confers a slight insectiside resistance to the host.
References
Author
Page authored by Benjamin Lowe & Brian Lovett, students of Prof. Jay Lennon at Michigan State University.
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