Page Banner

United States Department of Agriculture

Agricultural Research Service

Research Project: Ultra-High Throughput Sequencing for Discovery and Characterization of Viral Genomes in Fire Ants

Location: Imported Fire Ant and Household Insects

2011 Annual Report


1a.Objectives (from AD-416)
Use a metagenomics approach to identify new viruses infecting the fire ant Solenopsis invicta and subsequently use genomic tools and resources to study the biology (distribution, pathogenicity, etiology, molecular evolutionary history) of several of these viruses.


1b.Approach (from AD-416)
1) Perform a large-scale EST study using 454 pyrosequencing technology to identify potential viruses infecting fire ants using bioinformatics tools and manual annotation of genes. 2) Confirm that newly discovered viruses occur within S. invicta and are not contaminants. 3) Sequence the entire genomes of newly discovered viruses. 4) Use an existing cDNA microarray to determine the host response to viral infections by comparing and identifying genes differentially expressed between virus-infected and uninfected fire ants. 5) Sequence multiple genomes of a single virus and multiple alleles of host genes that respond to viral infection and examine their molecular evolution.


3.Progress Report

This project is related to sub-objective 1.1 of this in-house project: Perform large-scale EST study to significantly increase the breadth and depth of transcriptome coverage using 454 pyrosequencing technology.

The objective of this cooperative research project is to use a metagenomics approach to identify new viruses infecting the fire ant Solenopsis invicta and subsequently use genomic tools and resources to study the biology (distribution, pathogenicity, etiology, molecular evolutionary history) of newly discovered viruses. Four cDNA libraries constructed during previous year were sequenced using high throughput technology. Formal analyses of the resulting gene sequence data for viruses using bioinformatic tools are underway.


Last Modified: 9/23/2014
Footer Content Back to Top of Page