Monitoring surveys of Phytophthora related diseases in four forest nurseries Italy revealed the occurrence fourteen species to be associated with collar and root rot on plants typical Mediterranean alpine regions. In addition, a multilocus phylogeny analysis based nuclear ITS ß-tubulin mitochondrial cox1 sequences, as well micromorphological features, supported description new belonging phyloge...

The family Vireonidae represents one of the most widespread and well-known New World avian radiations, but a robust species-level phylogeny of the group is lacking. Here, we infer a phylogeny of Vireonidae using multilocus data obtained from 221 individuals from 46 of 52 vireonid species (representing all four genera) and five "core Corvoidea" outgroups. Our results show Vireonidae to be monoph...

Gene flow between species may last a long time in plants. Reticulation inevitably causes difficulties in phylogenetic reconstruction. In this study, we looked into the genetic divergence and phylogeny of 20 Lilium species based on multilocus analyses of 8 genes of chloroplast DNA (cpDNA), the internally transcribed nuclear ribosomal DNA (nrITS) spacer and 20 loci extracted from the expressed se...

mutS mutators accelerate the bacterial mutation rate 100- to 1,000-fold and relax the barriers that normally restrict homeologous recombination. These mutators thus afford the opportunity for horizontal exchange of DNA between disparate strains. While much is known regarding the mutS phenotype, the evolutionary structure of the mutS(+) gene in Escherichia coli remains unclear. The physical prox...

Periodontitis has been associated with the presence of Porphyromonas gingivalis, and previous studies have shown phenotypic differences in the pathogenicities of strains of P. gingivalis. An accurate and comprehensive phylogeny of strains of P. gingivalis would be useful in determining if there is an evolutionary basis to pathogenicity in this species. Previous phylogenies of P. gingivalis stra...

Lates perches of the genus (Latidae) are large piscivorous fishes, with a strikingly disjunct distribution range in coastal areas and estuaries Indo-Pacific region some African freshwater systems. Previous phylogenetic hypotheses based on osteological ontogenetic data suggested paraphyly representatives, or even small Lake Tanganyika species assemblage, respect to remaining species. Based multi...

In order to understand the population structure and dynamics of bacterial microorganisms, typing systems that accurately reflect the phylogenetic and evolutionary relationship of the agents are required. Over the past 15 years multilocus sequence typing schemes have replaced single locus approaches, giving novel insights into phylogenetic and evolutionary relationships of many bacterial species...