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Research interests:
Genetics and genomics of ciliates; the species problem and mechanisms of speciation in Paramecium; diversity and regulation of symbioses between ciliates and bacteria; symbiotic Alphaproteobacteria.
Lecturing:
“Virology” (faculty course, bachelors, 3rd year)
“Genetics of Microorganisms” (department course, bachelors, 4th year)
“Molecular Parasitology of Protists” (masters, 2nd year)
“Molecular Parasitology of Bacteria (masters, 2nd year)
“Presenting Scientific Data and Applying for Grants” (seminars, masters, 2nd year)
Collaborations:
Institute of Cellular and Intracellular Symbiosis, Ural Division of Russian Academy of Sciences, Orenburg, Russia (Dr. Andrey Plotnikov)
Institute of Biology, Ecole Normale Superieure, Paris, France (Dr. Eric Meyer)
Department of Biology, University of Pisa, Pisa, Italy (Prof. Giulio Petroni)
Freiburg University, Freiburg, Germany (Dr. Martina Schrallhammer)
Wuppertal University, Wuppertal, Germany (Prof. Martin Simon)
Laboratory of Protistology, National Autonomous University of Mexico, Mexico (Dr. Rosaura Mayen Estrada)
Textbook:
Pinevich A.V., Sirotkin A.K., Gavrilova O.V., Potekhin A.A. Virology (in Russian). 2012, St. Petersburg University Press, 432 p.
Selected publications:
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Catania F., Wurmser F., Potekhin A.A., Przyboś E., Lynch M. Genetic diversity in the Paramecium aurelia species complex. 2009. Mol. Biol. Evol., v. 26(2), p. 421-431.
Nekrasova I., Przyboś E., Rautian M., Potekhin A. Electrophoretic karyotype polymorphism of sibling species of the Paramecium aurelia complex. 2010. J. Eukaryotic Microbiol., v. 57. № 6, p. 494-507.
Greczek-Stachura M., Potekhin A., Przyboś E., Rautian M., Skoblo I., Tarcz S. Identification of Paramecium bursaria syngens through molecular markers - comparative analysis of three loci in the nuclear and mitochondrial DNA. 2012. Protist, v. 163, № 4, p. 671-685.
Tarcz S., Potekhin A., Rautian M., Przyboś E. Variation in ribosomal and mitochondrial DNA sequences demonstrates the existence of intraspecific groups in Paramecium multimicronucleatum (Ciliophora, Oligohymenophorea). 2012. Mol. Phylogenet. Evol., v. 63, № 2, p. 500-509.
Tarcz S., Rautian M., Potekhin A., Sawka N., Beliavskaya A., Kiselev A., Nekrasova I., Przyboś E. Paramecium putrinum (Ciliophora, Protozoa): the first insight into the variation of two DNA fragments - molecular support for the existence of syngens. 2014. Mol. Phylogenet. Evol., v. 73, p. 140-145.
Singh D.P., Saudemont S., Guglielmi G., Arnaiz O., Goût J.F., Prajer M., Potekhin A., Przybòs E., Aubusson-Fleury A., Bhullar S., Bouhouche K., Lhuillier-Akakpo M., Tanty V., Blugeon C., Alberti A., Labadie K., Aury J.M., Sperling L., Duharcourt S., Meyer E. 2014. Genome-defence small RNAs exapted for epigenetic mating-type inheritance. 2014, Nature, v. 509, № 7501, p. 447-452.
Popenko V.I., Potekhin A.A., Karajan B.P., Skarlato S.O., Leonova O.G. The size of DNA molecules and chromatin organization in the macronucleus of the ciliate Didinium nasutum (Ciliophora). 2015. J. Eukaryotic Microbiol., v. 62, p. 260-264.
Castelli M., Lanzoni O., Rossi L., Potekhin A., Schrallhammer M., Petroni G. Evaluation of enrichment protocols for bacterial endosymbionts of ciliates by real-time PCR. 2016. Curr. Microbiol., v. 72, p. 723-732.
Lanzoni O., Fokin S.I., Lebedeva N., Migunova A., Petroni G., Potekhin A. Rare freshwater ciliate Paramecium chlorelligerum Kahl, 1935 and its macronuclear symbiotic bacterium “Candidatus Holospora parva”. 2016. PLoS ONE, 11(12):e0167928.
Potekhin A., Schweikert M., Nekrasova I., Anikina A., Vitali V., Schwartz S., Kaltz O., Petroni G., Schrallhammer M. Complex life cycle, broad host range and adaptation strategy of the intranuclear Paramecium symbiont Preeria caryophila comb. nov. 2018. FEMS Microbiol. Ecol., doi:10.1093/femsec/fiy076/4987202.
Lanzoni O., Sabaneyeva E., Modeo L., Castelli M., Lebedeva N., Verni F., Schrallhammer M., Potekhin A., Petroni G. Diversity and environmental distribution of the cosmopolitan endosymbiont “Candidatus Megaira”. 201., Sci. Reports, 9(1):1179.
Plotnikov A.O., Balkin A.S., Gogoleva N.E., Lanzoni O., Khlopko Yu.A., Cherkasov S.V., Potekhin A.A. High-throughput sequencing of the 16S rRNA gene as a survey to analyze the microbiomes of free-living ciliates Paramecium. 2019. Microbial Ecol. doi.org/10.1007/s00248-019-01321-x.
Castelli M., Sabaneyeva E., Lanzoni O., Lebedeva N., Floriano A.M., Gaiarsa S., Benken K., Modeo L., Bandi C., Potekhin A., Sassera D., Petroni G. Deianiraea, an extracellular bacterium associated with the ciliate Paramecium, suggests an alternative scenario for the evolution of Rickettsiales. 2019. ISME J. DOI: 10.1038/s41396-019-0433-9.
Nekrasova I., Nikitashina V., Bhullar S., Arnaiz O., Singh D.P., Meyer E., Potekhin A. Loss of a fragile chromosome region leads to the screwy phenotype in Paramecium tetraurelia. 2019. Genes (Basel), 10(7), pii: E513.
Lanzoni O., Plotnikov A., Khlopko Yu., Munz G., Petroni G., Potekhin A. The core microbiome of sessile ciliate Stentor coeruleus is not shaped by the environment. 2019. Sci. Reports, 9(1):11356.
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