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United States Department of Agriculture

Agricultural Research Service

Research Project: FUNCTIONAL GENOMICS OF THE FIRE ANT SOLENOPSIS INVICTA

Location: Imported Fire Ant and Household Insects

2012 Annual Report


1a.Objectives (from AD-416):
The goals of the proposed research are to develop new functional genomic resources for the fire ant Solenopsis invicta and to employ these resources to examine biological traits that are simultaneously important for understanding its basic biology and identifying genes and gene networks that are potential targets for its biological control.


1b.Approach (from AD-416):
1) Large-scale EST studies will be performed to significantly increase the breadth and depth of transcriptome coverage using both 454 pyrosequencing as well as traditional Sanger sequencing technology. 2) An oligo microarray platform (Agilent) will be developed for gene expression studies using the EST sequence data. 3) A platform for screening SNPs will be developed using Illumina technology for population genomic and linkage studies. 4) Integrated physical and genetic maps will be generated for S. invicta, which are essential for linking phenotypic traits to the responsible genetic variation. 5) A web-based platform will be developed integrating these data in an easily accessible format.


3.Progress Report:

This project directly supports objective 1 of the in-house project (Develop functional genomic resources and employ these resources to examine the genetic basis of biological traits that can potentially be used for biologically based control, including implications for the geographic origins of infestations).

The goal of this project is to develop new functional genomic resources for fire ants. The full genome sequence of a second fire ant was completed and the results are summarized in a manuscript submitted to a peer-reviewed journal. This second genome was from a single Gp-9b male, in contrast to a Gp-9B male representing the first draft genome sequence. In addition, an oligo microarray was constructed and currently is being used for a number of gene expression studies outlined in proposal. Necessary samples for two additional comparative gene expression studies were collected and archived.

Research progress was monitored by email and telephone correspondence, as well as publications.


Last Modified: 7/23/2014
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