J 2018

Viral discovery and diversity in trypanosomatid protozoa with a focus on relatives of the human parasite Leishmania

GRYBCHUK, D.; N.S. AKOPYANTS; A.Y. KOSTYGOV; A. KONOVALOVAS; L.F. LYE et al.

Základní údaje

Originální název

Viral discovery and diversity in trypanosomatid protozoa with a focus on relatives of the human parasite Leishmania

Autoři

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 a V. YURCHENKO

Vydání

Proceedings of the National Academy of Sciences of the United States of America, WASHINGTON, NATL ACAD SCIENCES, 2018, 0027-8424

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10607 Virology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 9.580

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/18:00106594

Organizační jednotka

Středoevropský technologický institut

EID Scopus

Klíčová slova anglicky

Trypanosomatidae; Bunyavirales; persistent virus infection; coinfection; coevolution

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 13. 3. 2019 11:04, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

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.