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Molecular Phylogenetics Evidence for a Novel Lineage of Amoebae Within Discosea (Amoebozoa: Lobosa)

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Corsaro D., Venditti D.

Acta Protozoologica

2013

vol. 52

issue 4

Some amoebae were recovered from freshwater samples on agar plates. Due to a fungal contamination tightly associated with these amoebae, it was impossible to correctly characterize them on a morphological base, but sequences of the small subunit ribosomal RNA gene (SSU rDNA) were successfully obtained from three strains. Phylogenetic analysis performed on these SSU rDNA allowed to identify these amoebae as members of a new lineage, related to the Dermamoebida, which includes also several other environmental SSU sequences.

Molecular Identification of a Phage-infected Protochlamydia Strain Naturally Harboured by Non-Encysting Naegleria

71%

Corsaro D., Walochnik J., Venditti D., Müller K.-D., Michel R.

Acta Protozoologica

2013

vol. 52

issue 4

A thermophilic strain of Naegleria clarki, isolated from a pond, has previously been investigated for its peculiarity to host a cytoplasmic symbiont, which causes a loss of the ability to form cysts. This endosymbiont, called Pcb, was itself infected by a phage, and exhibited chlamydia-like features resembling to another symbiont of Naegleria previously described as Protochlamydia naegleriophila. We report in this study, the results of amoeba host range and 16S rDNA molecular phylogeny of this strain, showing that Pcb is a new strain of the Naegleria endosymbiont chlamydial species Protochlamydia naegleriophila (Chlamydiae: Parachlamydiaceae).

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2 Acta Protozoologica

2 2013

2 Corsaro D.

2 Venditti D.

1 Michel R.

1 Müller K.-D.

1 Walochnik J.

Search results

Molecular Phylogenetics Evidence for a Novel Lineage of Amoebae Within Discosea (Amoebozoa: Lobosa)

Molecular Identification of a Phage-infected Protochlamydia Strain Naturally Harboured by Non-Encysting Naegleria