GRYBCHUK, D., N.S. AKOPYANTS, A.Y. KOSTYGOV, A. KONOVALOVAS, L.F. LYE, D.E. DOBSON, H. ZANGGER, N. FASEL, A. BUTENKO, A.O. FROLOV, J. VOTYPKA, C.M. DAVILA-LEVY, P. KULICH, Jana MORAVCOVÁ, Pavel PLEVKA, I.B. ROGOZIN, S. SERVA, J. LUKES, S.M. BEVERLEY and V. YURCHENKO. Viral discovery and diversity in trypanosomatid protozoa with a focus on relatives of the human parasite Leishmania. Proceedings of the National Academy of Sciences of the United States of America. WASHINGTON: NATL ACAD SCIENCES, 2018, vol. 115, No 3, p. "E506"-"E515", 10 pp. ISSN 0027-8424. Available from: https://dx.doi.org/10.1073/pnas.1717806115.
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Basic information
Original name Viral discovery and diversity in trypanosomatid protozoa with a focus on relatives of the human parasite Leishmania
Authors GRYBCHUK, D. (203 Czech Republic), N.S. AKOPYANTS (840 United States of America), A.Y. KOSTYGOV (643 Russian Federation), A. KONOVALOVAS (440 Lithuania), L.F. LYE (840 United States of America), D.E. DOBSON (840 United States of America), H. ZANGGER (756 Switzerland), N. FASEL (756 Switzerland), A. BUTENKO (203 Czech Republic), A.O. FROLOV (643 Russian Federation), J. VOTYPKA (203 Czech Republic), C.M. DAVILA-LEVY (76 Brazil), P. KULICH (203 Czech Republic), Jana MORAVCOVÁ (203 Czech Republic, belonging to the institution), Pavel PLEVKA (203 Czech Republic, guarantor, belonging to the institution), I.B. ROGOZIN (840 United States of America), S. SERVA (440 Lithuania), J. LUKES (203 Czech Republic), S.M. BEVERLEY (840 United States of America) and V. YURCHENKO (643 Russian Federation).
Edition Proceedings of the National Academy of Sciences of the United States of America, WASHINGTON, NATL ACAD SCIENCES, 2018, 0027-8424.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10607 Virology
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 9.580
RIV identification code RIV/00216224:14740/18:00106594
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1073/pnas.1717806115
UT WoS 000423091400021
Keywords in English Trypanosomatidae; Bunyavirales; persistent virus infection; coinfection; coevolution
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavla Foltynová, Ph.D., učo 106624. Changed: 13/3/2019 11:04.
Abstract
Knowledge of viral diversity is expanding greatly, but many lineages remain underexplored. We surveyed RNA viruses in 52 cultured monoxenous relatives of the human parasite Leishmania (Crithidia and Leptomonas), as well as plant-infecting Phytomonas. Leptomonas pyrrhocoris was a hotbed for viral discovery, carrying a virus (Leptomonas pyrrhocoris ostravirus 1) with a highly divergent RNA-dependent RNA polymerase missed by conventional BLAST searches, an emergent clade of tombus-like viruses, and an example of viral endogenization. A deep-branching clade of trypanosomatid narnaviruses was found, notable as Leptomonas seymouri bearing Narna-like virus 1 (LepseyNLV1) have been reported in cultures recovered from patients with visceral leishmaniasis. A deep-branching trypanosomatid viral lineage showing strong affinities to bunyaviruses was termed "Leishbunyavirus" (LBV) and judged sufficiently distinct to warrant assignment within a proposed family termed "Leishbunyaviridae." Numerous relatives of trypanosomatid viruses were found in insect metatranscriptomic surveys, which likely arise from trypanosomatid microbiota. Despite extensive sampling we found no relatives of the totivirus Leishmaniavirus (LRV1/2), implying that it was acquired at about the same time the Leishmania became able to parasitize vertebrates. As viruses were found in over a quarter of isolates tested, many more are likely to be found in the >600 unsurveyed trypanosomatid species. Viral loss was occasionally observed in culture, providing potentially isogenic virus-free lines enabling studies probing the biological role of trypanosomatid viruses. These data shed important insights on the emergence of viruses within an important trypanosomatid clade relevant to human disease.
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