background & aim: dracocephalum genus belongs to the lamiaceae family which has eight species in iran. dracocephalum kotschyi boiss is an important medicinal and aromatic plant that use in pharmaceutical industry. in addition, this species is used in iranian traditional medicine. the aim of current study was to examine the various growth regulations and explants on direct organogenesis of d...

giardia lamblia cysts were isolated from fecal samples of 55 symptomatic and asymptomatic patients with giardiasis. the cysts were harvested and purified using the sucrose gradient method. is the excystation of g. lamblia was obtained by treating them with hci (0.01n)', then they were transferred on to modified tyi-s-33 medium. out of 55 stool samples 17 cases were excysted with a rate of ...

In order to identify the endophytic fungi of some plants of the family Asteraceae, samples of Achillea filipendulina Lam. were collected from Golestan province (Iran) in spring 2016. The plants were rinsed gently with running water, and then were cut into 0.5–1 cm pieces. The surface sterilization was done by sodium hypochlorite (1.5–2.5% NaOCl), followed by 75% ethan...

Aim of present study was production, purification and characterization of invertase by Aspergillus niger (isolated from soil) using fruit peel waste as a substrate. Screening of various fungi grown on potato dextrose-agar (PDA) was done using liquid medium of 50% sucrose-Cazpek. After incubation at 28 ̊C for 10 days, the invertase activity was determined in the culture filtrate using Fehling’s s...

in summer of 2009, a disease with symptoms such as stem and trunk cankers were seen in apple golden delicious cultivars trees in west azerbaijan orchards. the disease was in progress due to environmental stresses such as drought and frostbite. bark and vascular system of the tree was darkened at the site of infection and cankers were scaling on main trunk and branches. to isolation of the fungi...

Giardia lamblia cysts were isolated from fecal samples of 55 symptomatic and asymptomatic patients with giardiasis. The cysts were harvested and purified using the sucrose gradient method. IS The excystation of G. lamblia was obtained by treating them with HCI (0.01N)', then they were transferred on to modified TYI-S-33 medium. Out of 55 stool samples 17 cases were excysted with a rate of ...

background nosocomial fungal infections could arise from independent exposure to airborne spores of filamentous fungi existing in the hospital environment. objectives the present study aimed to determine the mycoflora of indoor and outdoor environments of five major hospitals in khorramabad, iran. materials and methods sampling of air was done from indoor and outdoor environments of wards, surr...

Background & Aim: The aim of this study was to assess the antifungal effect of the watercress extract on the growth of Fusarium solani, the causal agent of potato dry rot. Experimental:  This research was done in a completely randomized design with three concentrations and four replicates on potato dextrose agar (PDA) culture medium. Results: Results of this study indicated that all ...

Seed-borne pathogens reduce the quality and cause infections at various growth stages of horticultural crops. Some best-known are fungi genus Alternaria, that destructive vegetable other crop diseases, resulting in significant yield losses. Over several years, much attention has been paid to environmentally-friendly solutions for disease management regarding environmental damage caused by chemi...