Aim Understanding plant diversity and how different traits have shaped the current biodiversity setting across world is one of major challenges for evolutionary biology. In this sense, genus Linum been broadly studied as a model species showing heterostyly, but no studies attempted to investigate possible correlations between heterostyly diversification. Thus, in study we aim explore origin div...

studies have demonstrated that plant extracts possess various biological characteristics, including immunomodulatory activity. heracleum persicum desf. (apiaceae), a medicinal plant native to iran, was studied for its immunomodulatory activity. immunomodulatory activity of different doses of an aqueous extract of h. persicum, was evaluated in female swiss albino mice. mice were treated with thr...

In order to investigate the medicinal species from montain of ShirKooh (Up village), in Yazd provience, Iran on three species by scientific names were Heracleum persicum Desf. ex Fisch., C.A.Mey. & Avé-Lall.; Ziziphora clinopodioides Lam. and Nepeta asterotricha Rech.f. were collected on June, July and August 2011. Then all samples essential oils were extracted by hydro-distillation method (cla...

In a wild plant-pathogen system, host resistance and pathogen virulence varied markedly among local populations. Broadly virulent pathogens occurred more frequently in highly resistant host populations, whereas avirulent pathogens dominated susceptible populations. Experimental inoculations indicated a negative trade-off between spore production and virulence. The nonrandom spatial distribution...