Streptomyces species from the rhizosphere of the medicinal plant Artemisia herba-alba Asso: screening for biological activities

This work aims to study cultivable actinobacterial isolated from the rhizosphere soil of Artemisia herba-alba Asso; an important component Mediterranean dry steppe flora. The isolates functional attributes with respect antifungal, in vitro growth-promotion properties and enzymatic capacities, were studied. A total eleven strains identified as Streptomyces species by 16S rRNA gene sequencing. positive for production almost all hydrolytic enzymes tested, while majority had ACC deaminase activity (6 strains) exhibited ammonia (7 strains), siderophores (9 phosphate solubilization strains). Two out named sp. BKS30 BKS40 showed antifungal activities. One promising strain that was in-depth characterized morphologically biochemically further tested its filtrate butanolic extract against nine target-fungi well antioxidant DPPH ABST tests. obtained results demonstrate Asso have potential different biological activities including particularly BKS30.