Multi-CSAR: a web server for scaffolding contigs using multiple reference genomes

Area of Science:

• Genomics
• Bioinformatics
• Computational Biology

Background:

• Genome assembly is a critical step in genomic research, often facing challenges in ordering and orienting DNA contigs.
• Existing scaffolding methods may lack accuracy or efficiency when dealing with complex genomes or limited reference data.

Purpose of the Study:

• To develop an efficient and accurate web server, Multi-CSAR, for scaffolding genome assemblies using multiple reference genomes.
• To provide a user-friendly platform for researchers to improve the contiguity and accuracy of their genome assemblies.

Main Methods:

• Multi-CSAR identifies shared sequence markers between a target genome and multiple reference genomes.
• It computes individual scaffolds based on each reference genome and integrates them into a final multiple reference-derived scaffold.
• Users can upload target and reference genomes (multi-FASTA format) and select analysis options like reference genome weighting and marker identification methods (NUCmer or PROmer).

Main Results:

• Multi-CSAR generates a multiple reference-derived scaffold for the target genome.
• The scaffold is presented in graphical (Circos plot, dotplot) and tabular formats for visual and detailed validation.
• The server offers improved accuracy and efficiency in genome scaffolding compared to single-reference methods.

Conclusions:

• Multi-CSAR provides a robust and accurate solution for genome scaffolding by leveraging multiple references.
• The web server facilitates enhanced genome assembly quality and aids in genomic research and comparative genomics.
• Its intuitive interface and visualization tools support effective validation of scaffolding results.