Project Number: 3625-21220-004-01
Project Type: Specific Cooperative Agreement

Start Date: Sep 08, 2008
End Date: Jun 30, 2009

Objective:
The objectives are to identify differentially expressed genes in Rpp2 and rpp2 gentoypes, and Rps8 and rps8 genotypes during post-infection response to Asian Soybean Rust and Phytophthora Root and Stem Rot pathogens, respectively.

Approach:
Soybean lines resistant (Rpp2) or susceptible (rpp2) to Asian Soybean Rust will be inoculated with the rust pathogen by collaborators in Brazil. Tissue samples will be collected at time zero, plus four other timepoints. RNA will be isolated from tissue representing each time point. Libraries will be made from each time point and provided to the cooperator. The cooperator will generate Solexa Digital Gene Expression data for each library. In addition, the cooperator will generate Solexa Whole Transcriptome Shotgun data from two pooled libraries representing resistant and sensitive lines. Soybean lines resistant (Rps8) or susceptible (rps8) to Phytophthora sojae will be inoculated with the Phytophthora pathogen. Tissue samples will be collected at time zero, plus three other timepoints. RNA will be isolated from tissue representing each time point. Libraries will be made from each timepoint and provided to the cooperator. The cooperator will generate Solexa Digital Gene Expression data for each library. In addition, the cooperator will generate Solexa Whole Transcriptome Shotgun data from libraries representing resistant and sensitive lines. The cooperator will generate a database of gene expression based on transcript counts and will provide this information to the ADODR. Differentially expressed genes will be overlain onto the soybean whole genome sequence and correlated with known positions of resistance genes.