Detection of multiple novel viruses in argasid and ixodid ticks in Mexico

病毒学 生物 地理 动物
作者
S. Viridiana Laredo-Tiscareño,Javier A. Garza‐Hernández,Chandra S. Tangudu,Wichan Dankaona,Carlos A. Rodríguez-Alarcón,Rodolfo González-Peña,Jaime R. Adame-Gallegos,Diana M. Beristain-Ruiz,Ignacio Netzahualcoyotl Barajas-López,Alissa M. Hargett,Ulrike G. Munderloh,Bradley J. Blitvich
出处
期刊:Ticks and Tick-borne Diseases [Elsevier BV]
卷期号:16 (2): 102455-102455
标识
DOI:10.1016/j.ttbdis.2025.102455
摘要

We examined ticks from Mexico using viral metagenomics to increase our understanding of the composition and diversity of the tick virome. The analysis was performed using 3,127 ticks of four Ixodidae spp. and one Argasidae spp. collected in 2019 to 2021 from domestic animals in four states of Mexico (Chiapas, Chihuahua, Guerrero, and Michoacán). All ticks were homogenized and tested for viruses using two approaches. In the first approach, an aliquot of each homogenate underwent two blind passages in Ixodes scapularis (ISE6) cells. Supernatants from all second passage cultures were subjected to polyethylene glycol (PEG) precipitation to enrich for virions then RNAs were extracted from the precipitates and analyzed by unbiased high-throughput sequencing (UHTS). In the second approach, an aliquot of every homogenate was subjected to PEG precipitation then RNAs were extracted and analyzed by UHTS, allowing for the detection of viruses unable to replicate in ISE6 cells. We identified seven novel species of viruses from multiple taxonomic groups (Bunyavirales, Flaviviridae, Nodaviridae, Nyamivirdae, Rhabdoviridae, Solemoviridae, and Totiviridae), some of which are highly divergent from all classified viruses and cannot be assigned to any established genus. Twelve recognized species of viruses were also identified. In summary, multiple novel and recognized viruses were detected in ticks from Mexico, highlighting the remarkable diversity of the tick virome.
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