The exact position of the actinomycetes or ray-fungi in the kingdom of lower forms of life has attracted considerable attention and has been a subject of much speculation. These organisms have been classified as bacteria, as fungi, and as a special group, either derived from one of the above or giving rise to both. With the accumulated knowledge concerning the morphology of the actinomycetes, i...

Endophytic actinomycetes were isolated from surface sterilized leaves of Catharanthes roseus (L.) G. Don offamily Apocynaceae. A total of 38 endophytic actinomycetes were recovered on Starch Casein Agar.Among the 38 isolates 20 morphologically different isolates were screened for antibacterial activity againstBacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa, Pr...

Here, we report the draft genome sequences of three actinobacterial isolates, Micromonospora sp. RV43, Rubrobacter sp. RV113, and Nocardiopsis sp. RV163 that had previously been isolated from Mediterranean sponges. The draft genomes were analyzed for the presence of gene clusters indicative of secondary metabolism using antiSMASH 3.0 and NapDos pipelines. Our findings demonstrated the chemical ...

It has been revealed that in organic horizons and plants of the tundra and taiga ecosystems under low temperatures, actinomycetal complexes form. The population density of psychrotolerant actinomycetes in organic horizons and plants reaches tens and hundreds of thousands CFU/g of substrate or soil, and decreases in the sequence litters > plants > soils > undecomposed plant remains > moss growth...

Mangroves are woody plants located in tropical and subtropical intertidal coastal regions. The mangrove ecosystem is becoming a hot spot for natural product discovery and bioactivity survey. Diverse mangrove actinomycetes as promising and productive sources are worth being explored and uncovered. At the time of writing, we report 73 novel compounds and 49 known compounds isolated from mangrove ...

Background Actinomycetes may account for 10 to 30% of the total soil rhizosphere microorganisms. The attention given to the actinomycetes in biotechnological applications is a result of their metabolic versatility that is accompanied by the production of primary and secondary metabolites of economic importance, which are a promising source of products (e.g., antibiotics, enzyme inhibitors, anti...

Sixteen actinomycetes capable of utilizing dibenzofuran as a sole source of carbon and energy were isolated, including Rhodococcus, Microbacterium, and Terrabacter genera. Heretofore, no dibenzofuran-utilizing strain belonging to the genus Microbacterium has been reported. Five extradiol dioxygenase genes (dfdB, and edil to 4) of the strain Rhodococcus sp. YK2 were cloned and analyzed. The nucl...

Mangrove-derived actinomycetes are promising sources of bioactive natural products. In this study, using homologous screening of the biosynthetic genes and anti-microorganism/tumor assaying, 163 strains of actinomycetes isolated from mangrove sediments were investigated for their potential to produce halogenated metabolites. The FADH2-dependent halogenase genes, identified in PCR-screening, wer...

The enzyme Asparaginase, known as L-asparagine amidohydrolase, has anti-tumor properties and is widely used a chemotherapeutic treatment for acute lymphoblastic leukemia. Many different organisms, including plants terrestrial microbes such bacteria, fungi, algae actinomycetes, have produced this enzyme. In study, 34 isolates of the actinomycetes were collected from soil water governorates in Eg...