Microsatellites, alternatively referred to as simple sequence repeats (SSRs), constitute repetitive DNA sequences typically composed of 1-6 nucleotides. These repetitive motifs are ubiquitously present within the genomes of various organisms, encompassing both chloroplast and mitochondria. Functioning as invaluable molecular markers, microsatellites contribute significantly to diverse realms of biological research
In the pursuit of discerning the length variations of SSRs across different species, we have introduced an extensive repository known as the polymorphic microSATellites database (pSATdb). This latest iteration, pSATdb 2.0, represents an enhanced version of its predecessor, providing comprehensive information on common (shared across multiple organisms), polymorphic (exhibiting length variations among organisms), and unique (exclusive to a single organism) SSRs within organellar genome sequences, specifically those of chloroplast and mitochondria.