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ARS Home » Midwest Area » St. Paul, Minnesota » Cereal Disease Lab » Research » Research Project #421254


Location: Cereal Disease Lab

Project Number: 5062-21220-021-09-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Jul 15, 2010
End Date: Apr 30, 2014

Overall objective is to improve the existing Puccinia graminis draft genome sequence (strain 7a) and provide a complete web resource for the scientific community. The specific objectives are to: (a) improve the reference genome (b) comprehensively refine the annotation using RNA-sequencing (c) establish a genetic framework to resolve haplotypes, (d) provide a reference for the current epidemic rust strain, Ug99, and (e) provide a web-based information infrastructure for delivery of this information.

Objectives 1 and 2 involve the improvement of the existing P. graminis reference genome, through the genetic linkage of existing supercontigs and the generation of novel RNA-seq data to support gene annotation. Objective 3 is to prototype a novel genetic approach to distinguish the two haplotypes of 7a, which if successful, will also lead to an improvement in the quality of the 7a reference. Objective 4 is to generate a de novo assembled reference sequence for the Ug99 strain and to annotate this genome (the improved annotation of the reference strain will assist in this process). Objective 5 is to use both these strains as reference sequence to integrate other high throughput data sets (specifically, with variation data from other strains of Pgt) and to disseminate this data to the scientific community in the context of other fungal genomic data, through Ensembl (a genome informatics portal maintained by the European Bioinformatics Institute) and the Broad Institute rust fungal genomes website.