FSTVAL

FSTVAL analyzes bulk flanking sequence tags (FSTs) from transgenic plants to identify and characterize transgene integration sites within plant genomes.

Key Features:

• Automated Evaluation: Automates elimination of vector sequences, identification of optimal mapping positions for FSTs, and generation of integration-site statistics.
• Genomic Context Analysis: Distinguishes genic versus intergenic insertion sites to assess potential impacts on gene expression.
• Comprehensive Reporting: Produces results in tables, distribution maps, and frequency graphs along chromosomes.
• Reference Genome Support: Supports 17 plant reference genome sequences, including Arabidopsis thaliana, Oryza sativa (rice), and Glycine max (soybean).
• High-throughput Handling: Processes bulk FST datasets suitable for studies that generate large numbers of transgenic lines.
• Validation: Performance has been evaluated with over 1,000 instances during one year and validated using 5,144 rice FSTs.

Scientific Applications:

• Transgene Insertion Mapping: Maps and characterizes insertion sites from T-DNA and transposon-mediated mutagenesis.
• Genome-wide Mutagenesis Screens: Enables analysis of large-scale insertional mutant collections comprising thousands of transgenic lines.
• Targeted Expression Assessment: Supports evaluation of insertion effects for targeted gene expression strategies by providing genomic context of insertions.

Methodology:

Removal of vector sequences from FSTs; identification of best mapping positions for FSTs against known reference genome sequences; generation of statistical summaries of integration sites.