Normal pattern formation during embryonic development requires the regulation of cellular competence to respond to inductive signals. In the Xenopus blastula, vegetal cells release mesoderm-inducing factors but themselves become endoderm, suggesting that vegetal cells may be prevented from expressing mesodermal genes in response to the signals that they secrete. We show here that addition of lo...

background and objectives: bitter melon is one of the anti-cancer medicinal plants that it’s wide level in vitro propagation and anti-cancer material production was necessary. different factors such as genotype, selected explants’ type and it`s preparation conditions influenced regeneration content. plant growth regulator`s effect on callogenesis and indirect regeneration from parangipetai indi...

Rat ileal air interface and submerged explant models were developed and used to compare the adhesion of Salmonella enterica var Enteritidis wild-type strains with that of their isogenic single and multiple deletion mutants. The modified strains studied were defective for fimbriae, flagella, motility or chemotaxis and binding was assessed on tissues with and without an intact mucus layer. A mult...

Aloe vera is an important medicinal perennial herb belonging to the family liliaceae. A method for mass propagation of Aloe vera by using different explants and different media with different PGR contain has been developed. Two type of explants (with and without sheath Type A and B respectively) were cultured on MS, B5 and SH media supplemented with different combination of different NAA with B...

Background: Ferulago angulata is an important medicinal plant and endemic to Iran which is an endangered Plant. Objective: The aim of this study was to achieve an efficient method for propagation of this plant and evaluation of essential oil content and composition in habitat. Metthods: Essential oils were extracted by hydrodistillation using Clevenger-type apparatus and its composition was ...

In vitro culture gametophytes of leafy liverworts often have problems in their sterilization process. These due to the high level contamination and fragile structure gametophyte liverworts. The structures can be easily damage after exposure disinfectant. This study aimed observe concentration time “Bayclin” commercial bleach suppress with viability Acrolejeunea fertilisgametophytic explants. re...

pseudohandelia tzvel. belongs to the asteraceae family with only one species. it is endemic to khorasan province in iran. having partially big and beautiful inflorescences make it a proper choice in urban green space especially in case of mass culture. in this research, to investigate possibility of micro propagation of this plant two separate experiments were designed. to obtain non contaminat...

cumin (cuminum cyminum l.) as a member of the apiaceae family is one of the most important medicinal plants in iran. the purpose of this study was to evaluate the effect of plant growth regulators and explant type on callus induction in cumin. for this purpose the cumin seeds (kuhbanan accession) were disinfected with sodium hypochlorite and alcohol and cultured on ms basal medium. leaf and hyp...