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Published on: November 30, 2014
De novo transcriptome sequencing in Anopheles funestus using Illumina RNA-seq technology
Jacob E Crawford1, Wamdaogo M Guelbeogo, Antoine Sanou
1Department of Entomology, Cornell University, Ithaca, New York, United States of America. jc598@cornell.edu
Plos One
|December 15, 2010
Summary
Researchers sequenced the Anopheles funestus transcriptome, a key malaria vector, to enable new disease control strategies. This study provides a valuable genomic resource for understanding mosquito biology and combating malaria transmission.
Area of Science:
- Genomics
- Vector Biology
- Malaria Research
Background:
- Anopheles funestus is a primary vector of human malaria, responsible for significant mortality in sub-Saharan Africa.
- Limited genomic resources hinder research into An. funestus biology and evolution, impeding novel disease control development.
- The An. funestus genome has not been sequenced, necessitating transcriptomic approaches.
Purpose of the Study:
- To sequence the adult female transcriptome of An. funestus from a West African colony.
- To establish a foundational genomic resource for An. funestus research.
- To facilitate genome-scale experimental biology for this critical malaria vector.
Main Methods:
- De novo transcriptome assembly using iterative assemblies and target-based contig clustering.
- Conservative selection of 15,527 contigs through comparisons with Dipteran transcriptomes and protein databases.
- Identification of putative immune genes and orthologues by comparison with Anopheles gambiae.
Main Results:
- Assembly of the An. funestus transcriptome, yielding 15,527 contigs.
- Identification of 339 putative immune genes within the An. funestus transcriptome.
- Discovery of 5,434 1:1 orthologues between An. funestus and An. gambiae, with immune genes showing higher divergence.
- Detection of approximately 367,000 genetic polymorphisms.
Conclusions:
- Development of a cost-effective de novo transcriptome sequencing pipeline applicable to various organisms.
- The An. funestus contig set and findings serve as a crucial resource for future studies on this epidemiologically important vector.
- The approach facilitates the development of genomic resources for non-model organisms lacking full genome sequences.
