Abstract. Fatmawati U, Qurrata’aini MR, Rosyidi NW, Sari DP, Santosa S. 2023. Optimization of culture medium and bioformulation rhizobial actinomycetes to enhance soybean plant growth. Biodiversitas 24: 2912-2918. Actinomycetes are a group Gram-positive bacteria that well-known for having growth-promoting activity. In an earlier study, Streptomyces sp. strain ASR 58 67, isolated from rhizospher...

Actinomycetes are comprised of diverse group of organisms that are Gram positive with guanine plus cytosine content in their DNA being greater than 55M % [1]. The term actinomycetes is coined from two greek words, atkis meaning ray and mykesmeaning fungus [2]. This is because the organisms have both fungi and bacteria like features. Like fungi, they form mycelia network branching filaments whil...

The BioMerieux ID 32C Yeast Identification System was examined to determine its usefulness as a rapid method for the identification of medically important aerobic actinomycetes. More than 290 strains were tested by this method and the results were compared to those obtained by conventional methods. It was found that aerobic actinomycetes could be differentiated to species level in 7 days by the...

The number and types of microorganisms in the gut of Culex quinquefasciatus larvae varied considerably from one site of collection to another. Larval gut, in general, contained enormous number of bacteria, a few fungi and negligible number of actinomycetes which belonged to 15 bacterial, 6 fungal and 4 actinomycete genera, respectively. Bacillus sp., Staphylococcus sp. and Pseudomonas sp. among...

A new technique for the selective isolation of actinomycetes from natural mixed microbial populations is described. A nutrient agar medium was overlaid with a 0.22- to 0.45-microns-pore cellulose ester membrane filter, and the surface of the filter was inoculated. During incubation, the branched mycelia of the actinomycetes penetrated the filter pores to the underlying agar medium, whereas grow...

background and objective : due to the evolution of multidrug-resistant strains, screening of natural resources, especially actinomycetes, for new therapeutic agents discovery has become the interests of researchers. in this study, molecular, chemical and biological screening of soil actinomycetes was carried out in order to search for peptide-producing actinomycetes. materials and methods : 60 ...

Actinomycetes were isolated from different organs viz. skin, gills and gut contents of three species of fishes viz. Mugil cephalus (Linnaeus, 1758), Chanos chanos (Forskal, 1775) and Etroplus suratensis (Bloch, 1780) using three different media from the Vellar estuary, situated along the southeast coast of India. Among the three fishes, M. cephalus harboured highest number of actinomycetes popu...

Microorganisms associated with medicinal plants are of interest as the producers of important bioactive compounds. To date, the diversity of culturable endophytic actinomycetes associated with medicinal plants is in its initial phase of exploration. In this study, 42 endophytic actinomycetes were isolated from different organs of seven selected medicinal plants. The highest number of isolates (...

One DDT-contaminated soil and two uncontaminated soils were used to enumerate DDT-resistant microbes (bacteria, actinomycetes and fungi) by using soil dilution agar plates in media either with 150 mg DDT ml−1 or without DDT at different temperatures (25, 37 and 55◦C). Microbial populations in this study were significantly (p<0.001) affected by DDT in the growth medium. However, the numbers of m...

Proteases are the most important group of the enzymes produced commercially and industrial purpose[1,2]. They have extensive applications in a range of industrial products and processes including detergents, food, pharmaceuticals and leather[3,4]. They are classified into various groups such as alkaline protease, serine protease, cystein protease, aspartic protease and metallo protease[5]. Prot...