Community structure has been widely identified as a feature of many real-world networks. It has been shown that the antigenic diversity of a pathogen population can be significantly affected by the contact network of its hosts; however, the effects of community structure have not yet been explored. Here, we examine the congruence between patterns of antigenic diversity in pathogen populations i...

Nowadays, traditional plant study has grown in importance as their use been increased. Tectona grandis (teak) is one of several plants that have studied for its phytochemical and pharmacological properties. This includes a number secondary metabolites, which may explain diverse Although teak leaf compounds examined the past, there still little information on diversity compounds. As result, we a...

Bacterial abundance, biomass, cell volume, and morphological diversity were studied in sediment samples collected from the coastal area of the eastern mid Adriatic Sea. Samples from the topmost 10 cm of sediment were taken monthly from January to December 2002. The number of bacteria varied from 3.54 x 109 cells g–1 in July to 8.08 x 109 cells g–1 in September. Biomass was lowest in May (78 μg ...

Evolutionary genetics studies the patterns and mechanisms of genetic changes underlying evolutionary change. Because biological diversity at all levels (including population, species, and ecosystem diversity) has a genetic basis and is a result of evolution, evolutionary genetics provides insight into the ultimate mechanisms creating biodiversity. Evolutionary genetics utilizes empirical tools ...

background and objectives: heracleum persicum aerial parts have been used in iranian folk medicine for their therapeutic activities and as a spice and flavoring agent in iranian foods and pickles. the present research was conducted to evaluate the pharmacognostic profile of h. persicum which will be useful in standardization for quality, purity, and sample identification. methods: for quality c...

Repeated exposure to inhibitory compounds can drive the evolution of resistance, which weakens chemical defence against antagonists. Floral phytochemicals in nectar and pollen have antimicrobial properties that can ameliorate infection in pollinators, but evolved resistance among parasites could diminish the medicinal efficacy of phytochemicals. However, multicompound blends, which occur in nec...

bermudagrass [cynodon dactylon (l.) pers.] is a perennial grass and has been long used as a medicinal herb in iranian traditional medicine to treat varied ailments. different parts of bermudagrass such as leaves, stolons, rhizomes and culms are rich sources of metabolites such as proteins, carbohydrates, mineral constituents, β-sitosterol, flavonoids, alkaloids, glycosides and triterpenoides. g...

Background: Fenugreek (Trigonella foenum-graecum L.) is an important medicinal plant that is a source of diosgenin, trigonelline and other valuable components. Fenugreek seeds is used for its pharmaceutical and nutraceutical properties. Objective: The aim of present study was to investigate the genetic diversity within and between different populations of Trigonella foenum-graecum using DNA ma...