Characterization and evaluation of antimicrobial and cytotoxic effects of Streptomyces sp. HUST012 isolated from medicinal plant Dracaena cochinchinensis Lour.

A highly potent secondary metabolite producing endophytic strain, Streptomyces sp. HUST012 was isolated from the stems of the medicinal plant Dracaena cochinchinensis Lour. Strain HUST012 showed antimicrobial and antitumor activities which were significantly much higher than those of dragon's blood extracted from D.

Sinomonas mesophila sp. nov., isolated from ancient fort soil.

A moderate growing strain designated as MPKL 26(T) was isolated from a soil sample of Bidar Fort, Karnataka, India. The strain MPKL 26(T) was Gram positive, bent rod in shape. The optimum pH and temperature for growth was 7.

Haladaptatus pallidirubidus sp. nov., a halophilic archaeon isolated from saline soil samples in Yunnan and Xinjiang, China.

Two extremely halophilic archaea, designated YIM 90917 and YIM 93656(T), were isolated from saline soils in Yunnan province and Lup nur region in Xinjiang province, western China, respectively. Colonies of the two strains were observed to be pink-pigmented. The cells were found to be Gram-stain negative, coccoid and non-motile.