نخستین گزارش از گونه Sporormiella intermedia روی زالزالک (Crataegus sp.)

Bioactive compounds of natural origin have been the most consistent successful sources for developing novel agricultural pesticides and antimicrobial drugs. Endophytic fungi are a relatively less studied group of microorganisms and are considered as potential sources for exploring novel natural compounds that can be used in medicine, agriculture and industry. The main land of Iran has a significant diversity of climates and consequently a significant biological diversity. Iran's forested areas with its massive vegetation are a very rich variety of plants and are the focal point for a variety of fungal species. Therefore, in order to study the antimicrobial compounds of some endophytic fungi of hawthorn trees, during the spring and summer of 2014 and 2015, sampling was done from symptomless shoots and leaves of hawthorn trees in Arsbaran forests. Isolation and purification were performed in accordance with the usual methods for endophyte isolation. The identity of the isolates was confirmed based on morphological features and sequence data of ITS-rDNA regain, LSU and TEF gene. Based on a combination of morphological features and molecular data, Sporormiella intermedia was identified as an endophytic fungus of hawthorn tree. The present research is the first report of the mentioned fungal species on the hawthorn host for Iran and the world. To the best of our knowledge, the present research is the first report of the above mentioned fungal species as endophytes from hawthorn for Iran and the world. The genus Sporormiella belongs to the Sporormiaceae family. Members of this family are widespread and, despite that they are most commonly found on various types of animal dung, they are also found in soil, wood, and plant debris. The members of Sporormiaceae include approximately 100 fungal species in 10 genera, among which Sporormiella and Preussia are species-rich. Sporormiella and Preussia species have the ability to produce a wide range of bioactive secondary metabolites. Bioactive secondary metabolites produced by these fungi are usually involved in defense mechanisms against other competing microbes.