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1

Molecular polymorphism of strains within Paramecium septaurelia (Ciliophora, Oligohymenophorea)

100%
Przybos E., Tarcz S.
Folia Biologica
|
2005
|
vol. 53
|
issue 1-2
87-93
EN
RAPD-PCR fingerprinting and ARDRA riboprinting revealed polymorphism within P. septaurelia strains from Russia (4 strains from Lower Volga Basin), and one strain from USA, Florida. However, the first method showed the existence of four RAPD genotypes while the second revealed only two groups of strains with different band patterns. All studied strains had a high percentage of surviving hybrid clones in the inter-strain crosses, with little differentiation of strains within species. Intra-species differentiation of strains in RAPD band patterns may be connected with the degree of inbreeding for the studied species. Species of the P. aurelia complex can be arranged according to the degree of inbreeding characteristic for each, which is correlated with the degree of DNA polymorphism revealed by the RAPD method from extreme inbreeders (e.g. P. sexaurelia), moderate inbreeders (e.g. P. triaurelia) to weak inbreeders (e.g. P. pentaurelia). P. septaurelia of the P. aurelia complex should be included in the group of extreme inbreeder.
2

First American stand of Paramecium novaurelia and intra-specific differentiation of the species

81%
Przybos E., Tarcz S., Skoblo I.
Folia Biologica
|
2007
|
vol. 55
|
issue 1-2
53-63
EN
Astand of Paramecium novaurelia was found in Boston Massachusetts, USA, the first on this continent. Molecular studies (RAPD and sequencing of rRNA [ 3'SSUrRNA-ITS1, 5' LSU rRNA] and COI mtDNA fragments) of P. novaurelia strains show intra-specific polymorphism within the species as strain clusters characterized by variable relationships.
3

Intra-specific differentiation of Paramecium bursaria strains by molecular methods -preliminary studies

81%
Greczek-Stachura M., Tarcz S., Przybos E.
Folia Biologica
|
2010
|
vol. 58
|
issue 1-2
35-45
EN
Ten strains of Paramecium bursaria and also P. caudatum, P. multimicronucleatum, P. tetraurelia strains (as outgroups) were characterized by using Random Amplified Polymorphic DNA (RAPD), Amplified Ribosomal DNA Restriction Analysis (ARDRA) and sequencing of the non-coding ribosomal internal transcribed spacer (ITS) regions. RAPD analysis revealed that all Paramecium bursaria strains possessed characteristic band patterns; there was a correlation between the degree of differentiation of DNA revealed by RAPD-fingerprinting and the geographic origin of a particular strain. ARDRA riboprinting (using a fragment of SSU-LSU rDNA, about 3085bp) with restriction enzymes DraI, EcoRV, HhaI, HindIII,MspI, PstI distinguished groups of P. bursaria strains with characteristic band patterns originating fromdifferent sites. Comparison of the 550bp ITS1-5.8S-ITS2 fragment showed differentiation (0.9%) of the P. bursaria strains as three main groups of strains connected by site of origin in the constructed tree.
4

First stand of Paramecium octaurelia in Europe and molecular characteristics of other known strains of this species

81%
Przybos E., Tarcz S., Schmidt H., Czubatinskip L.
Folia Biologica
|
2009
|
vol. 57
|
issue 1-2
65-70
EN
The first stand of Paramecium octaurelia in Europe (Germany) is described and interesting intra-specific polymorphism is compared within the species using strains originating from different continents (Europe, N. America and Asia). Sequenced fragments of 5. LSU rDNA and COI mtDNA revealed that the studied strains form two groups, one with strains from Germany and USA, and a second group from Israel.
5

Species of the Paramecium aurelia complex in Russia (Western region of European Russia) with molecular characteristics of Paramecium novaurelia

81%
Przybos E., Tarcz S., Rautian M., Potekhin A.
Folia Biologica
|
2006
|
vol. 54
|
issue 1-2
43-47
EN
The presence of P. primaurelia, P. biaurelia, P. triaurelia, and P. novaurelia of the P. aurelia complex was revealed in the studied region of Russia. RAPD-PCR fingerprints (band patterns) of newly identified P. novaurelia strains from Russia were compared to those characteristic for the other chosen European strains of the species. The strains revealed intraspecific polymorphism as several groups of genotypes confirming the existence of polymorphism within P. novaurelia.
6

Molecular polymorphism of paramecium tetraurelia (Ciliophora, Protozoa) in strains originating from different continents

81%
Przybos E., Tarcz S., Fokin S.
Folia Biologica
|
2009
|
vol. 57
|
issue 1-2
57-63
EN
Fragments of LSU rDNA and COI mtDNA genes were sequenced in Paramecium tetraurelia strains originating from different continents, i.e. from Australia (Sydney), Europe (Spain, Poland), Asia (Israel, India, Japan) and North America (Indiana) in order to investigate intra-specific polymorphism in this species. Phylogenetic trees (based on analyses using the NJ, MP and BI methods) revealed that P. tetraurelia strains from Australia, Europe, North America and Asia (Israel, Japan) belong to one group divided into two main clusters, while a strain from India is separate and belongs to a different group. The Indian strain groups together with strains representing different species of the P. aurelia complex: P. septaurelia, P. octaurelia, and P. dodecaurelia. Polymorphism within P. tetraurelia was confirmed, however, it seems that the applied markers did not explain the ways of divergence of strains within species (Indian strain and others), and also did not show correlations between geographic origin of strains and their genetic diversity. Some species of the P. aurelia complex seem closely related.
7

Molecular studies on intra-specific differentiation of Paramecium dodecaurelia, with description of new stands of the species (Protozoa, Ciliophora)

61%
Przybos E., Tarcz S., Greczek-Stachura M., Surmacz M., Potekhin A., Rautian M.
Folia Biologica
|
2008
|
vol. 56
|
issue 3-4
249-262
EN
New stands of Paramecium tetraurelia were revealed in Australia (Melbourne) and Europe (Spain, Madrid).
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