Microbial Primer: Transposon directed insertion site sequencing (TraDIS): A high throughput method for linking genotype to phenotype

Abstract

Genetic screens are a key tool for linking phenotype and genotype. Transposon mutagenesis was one of the first genetic meth-odologies to associate genetic loci with phenotypes. The advent of next-generation sequencing transformed the use of this technique allowing rapid interrogation of whole genomes for genes that correlate with phenotype. One method is transposon directed insertion-site sequencing (TraDIS). Here we describe the method, recent developments in technology, and the advan-tages and disadvantages of this method compared to other genetic screening tools.