A halophilic, Gram-staining-negative, rod-shaped, flagellated and motile bacterium, strain QX-1 T, was isolated from deep-sea sediment at a depth of 3332 m in the southwestern Indian Ocean. Strain QX-1 T growth observed 4–50 °C (optimum 37 °C), pH 5.0–11.0 7.0), 3–25% NaCl (w/v; optimum 7%), it did not grow without NaCl. phylogenetic analysis based on 16S rRNA gene placed genus Halomonas most c...

In this paper, we proposed a new method for phylogenetic analysis, based on graphic representations of DNA sequences. Utilizing the invariants of graphs, we give the distance measure of DNA sequences and define the distance between species. We have chosen mitochondrial DNA sequences of 30 species and constructed their phylogenies successfully. The method does not require sequence alignment and ...

The family Magnaporthaceae considered as a single-family placed in the order Magnaporthales. Currently, three distinct clades are phylogenetically distinguished in this order that one is referred as the Pyriculariaceae. The Pyriculariaceae is characterized as a novel family having new genera, new species, new combinations and neotypification (basionym). To taxonomically evaluate this family, an...

A hyperparasite was observed on Venturia inaequalis during a survey in Krasnodar region, South Russia. Morphological characterization using light microscopy and molecular by sequencing ITS region of nuclear ribosomal DNA phylogenetic analysis revealed the identity pathogen as Trichothecium roseum. This is first record roseum from

Phylogenetic reconstruction help us better understand evolutionary relationship through the analyses of DNA sequences. In this paper, as an example of 8 mitochondrial DNA sequences, by means of a 3D graphical representation and the graph radius of the four characteristic curves to construct the similarity matrix, we proposed a vertical and horizontal method for constructing phylogenetic tree. U...

Determination of sequence similarity is one of the major steps in computational phylogenetic studies. One of the major tasks of computational biologists is to develop novel mathematical descriptors for similarity analysis. DNA clustering is an important technology that automatically identifies inherent relationships among large-scale DNA sequences. The comparison between the DNA sequences of di...

DNA sequence data have offered valuable insights into the relationships between living organisms. However, most phylogenetic analyses of DNA sequences rely primarily on single nucleotide substitutions, which might not be perfect phylogenetic markers. Rare genomic changes (RGCs), such as intron indels, retroposon integrations, signature sequences, mitochondrial and chloroplast gene order changes...

Medicinal plants have high importance in medicine and pharmacogonosy because of their secondary metabolites. Essential oils, antioxidants and flavonoids are the major compounds of many medicinal plants. These compounds especially antioxidants can increase oxidation of DNA in response to wounds. Nowadays, progresses in biotechnology such as molecular markers were used for phylogenetic relationsh...

Kappa-casein, as a major protein component in mammalian milk, plays an essential role in formation and stabilization milk micelles and preventing them from aggregating and therefore, helping to keep calcium phosphate in solution and transfer of calcium and phosphors from animal milk to consumers. Therefore, the objective of the current study was to investigate genetic and phylogenetic analysis ...