Giardia duodenalis is a parasite of great medical interest due to the number infections it causes worldwide each year. Although research on epigenetic mechanisms in this protist has only begun recently, regulation already been shown have important roles encystation, antigenic variation, and resistance antibiotics Giardia. In work, we show that ortholog Sir2, GdSir2.4, involved silencing rRNA ex...

IGS is abundant in polymorphism, which widely used the analysis of intraspecific genetic diversity and phylogenetic relationships among geographical populations. In this study, 45S rDNA repeat unit Saccharina japonica was obtained for first time by BAC clone sequencing. The total length S. 8 995 bp, including 5 420 bp 18S-5.8S–25S rDNA, 3 575 (Intergenic Spacer), with GC content 51.4 %. compose...

BACKGROUND Genotyping methods developed to survey the transmission dynamics of Mycobacterium tuberculosis currently rely on the interpretation of restriction and amplification profiles. Multispacer sequence typing (MST) genotyping is based on the sequencing of several intergenic regions selected after complete genome sequence analysis. It has been applied to various pathogens, but not to M. tub...

The taxonomic and phylogenetic status of several taxa previously recognized as subspecies inAstragalus sect. Anthylloidei is re-assessed based on DNA sequences and morphologicalfeatures. We focused on Astragalus ebenoides (subsp. ebenoides and subsp. naghadehensis),Astragalus murinus (subsp. murins and subsp. bornmuelleri), Astragalus remotiflorus (subsp.remotiflorus and subsp. melanogramma), A...