Cytologically active substances produced by soil micro-organisms

Decomposition of Cysteic Acid and Taurine by Soil Micro - organisms

Streptomycetes and aerobic bacteria able to utilize cysteic acid and taurine as sole sources of energy, nitrogen and sulphur were isolated from soil materials. None of the isolated fungi did this. The bacterium which was used in most experiments grew on both compounds. The sulphur of the compounds was recovered as sulphate and most of the nitrogen as ammonia after breakdown by growing or pregro...

Impacts of Transgenic Plants and Micro- Organisms on Soil Biota

Little is known about the impacts of transgenic plants and micro-organisms on soil biota and processes, despite the large number of field releases of transgenic crops. Recent work has shown that transgenic plants can cause changes in the soil biota (both invertebrates and micro-organisms) associated with these plants. Often the changes are transient but their impact on the soil ecosystem remain...

Utilization of S-adenosylmethionine by micro-organisms.

Shapiro, Stanley K. (Argonne National Laboratory, Argonne, Ill.). Utilization of S-adenosylmethionine by microorganisms. J. Bacteriol. 83:169-174. 1962.-Two types of mutants of Aerobacter aerogenes that utilize S-adenosylmethionine for growth are described. One type also responds to methionine, 5'methylthioadenosine, or a combination of homocysteine and S-methylmethionine. The second type of mu...

The utilization of pyridine by micro-organisms.

screening of membrane active antimicrobial metabolites produced by soil actinomycetes using membrane models

the focus of this study was antimicrobial membrane-activity of actinomycetes isolated from soils of iran. in this work, soil samples were collected from desert and farming zones of northern and central iran. a total number of 45 actinomycetes were isolated from the soil samples. in the primary screening performed to evaluate antimicrobial activity, isolated microorganisms were analyzed in terms...