Abstract:
:The red imported fire ant (Solenopsis invicta) escaped its natural enemies when it was introduced into North America in the 1930s from South America. US efforts have focused on discovery of natural enemies, like viruses, to provide sustainable control of the ant. Nine new virus genomes were sequenced from the invasive fire ant Solenopsis invicta using metagenomic RNA sequencing. The virus genomes were verified by Sanger sequencing and random amplification of cDNA ends reactions. In addition to the nine new virus genomes, the previously described Solenopsis viruses were also detected, including Solenopsis invicta virus 1 (SINV-1), SINV-2, SINV-3, SINV-4, SINV-5, and Solenopsis invicta densovirus. The virus sequences came from S. invicta workers, larvae, pupae, and dead workers taken from midden piles collected from across the ant's native range in Formosa, Argentina. One of the new virus genomes (Solenopsis invicta virus 6) was also detected in populations of North American S. invicta. Phylogenetic analysis of the RNA dependent RNA polymerase, the entire nonstructural polyprotein, and genome characteristics were used to tentatively taxonomically place these new virus genome sequences; these include four new species of Dicistroviridae, one Polycipiviridae, one Iflaviridae, one Totiviridae, and two genome sequences that were too taxonomically divergent to be placed with certainty. The S. invicta virome is the best characterized from any ant species and includes 13 positive-sense, single-stranded RNA viruses (Solenopsis invicta virus 1 to Solenopsis invicta virus 13), one double-stranded RNA virus (Solenopsis midden virus), and one double-stranded DNA virus (Solenopsis invicta densovirus). These new additions to the S. invicta virome offer potentially new classical biological control agents for S. invicta.
journal_name
Virus Genesjournal_title
Virus genesauthors
Valles SM,Rivers ARdoi
10.1007/s11262-019-01652-4subject
Has Abstractpub_date
2019-06-01 00:00:00pages
368-380issue
3eissn
0920-8569issn
1572-994Xpii
10.1007/s11262-019-01652-4journal_volume
55pub_type
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