75 bacterial strains were isolated from different types of habitats and after preliminary screening, 12 strains were selected for study. Dilute culture filtrate showed different types of allelopathic effects on the rate of seed germination, and development of radicle and hypocotyl region of six different plant materials viz. Amaranthus sp., Amaranthus gangeticus L., Raphanus sativus L., Vigna mungo (L.) Hepper., Vinga radiata (L.) Wilizek and Lens esculenta Moench. Four bacterial strains (3LF-9, 3BF-2, SN-3 and SHP-4) showed significant inhibitory effect to seed germination of Raphanus...

This research has done on gemstones and associated microorganisms.Gemstones are naturally occurred minerals desirable for its beauty and valuable in its rarity.Gemstones may originated from inorganic minerals or from living organisms.Microbiologist were mainly concerned with the microbial interaction with organic matter. Microorganisms can use reduced inorganic compounds as electron donors and are termed lithotrophs. Gemstones are traditionally used in our personal adornment. The mysterious appeal of gemstones, their exquisite colour and the play of light within them.Microorganisms are used...

Aquatic mycelial organisms, especially actinomycetes were isolated from different sites of Dhaka Metropolitan City and Sunderban (Khulna) area. From a total of 39 isolates, 30 were studied in detail and their provisional identification was attempted. Out of 30 isolates 27 were found to belong to the genus Streptomyces and the remaining three were the members of 3 different genera viz. Pseudonocardia, Microbispora and Saccharomonospora. The adaptive nature of the isolates to the aquatic habitat were examined and it was found that most of the mycelial organisms when grow under submerged...