Antagonistic and plant growth promoting properties of actinomycetes from rhizosphere Deschampsia antarctica È. Desv. (Galindez Island, Antarctica)

Aim. The isolation of actinomycetes from Deschampsia antarctica É. Desv. (Galindez Island, Antarctica) rhisosphere and determine their ability to produce compounds with antimicrobial and plant growth promotional properties.Мета. Виділення актиноміцетів з ризосфери Deschampsia antarctica É. Desv. популяцій антарктичного острова Галіндез, оцінка їхньої здатності пригнічувати фітопатогенні мікроорганізми і продукувати фітостимулювальні сполуки

Complete Draft Genome Sequence of the Actinobacterium Nocardiopsis sinuspersici UTMC102 (DSM 45277T), Which Produces Serine Protease.

Tokovenko B, Rückert C, Kalinowski J, et al. Complete Draft Genome Sequence of the Actinobacterium Nocardiopsis sinuspersici UTMC102 (DSM 45277T), Which Produces Serine Protease. Genome Announc. 2017;5(20): e00362-17.The genome sequence of alkalohalophilic actinobacterium Nocardiopsis sinuspersici UTMC102 is provided. N. sinuspersici UTMC102 produces a highly active serine alkaline protease, and contains at least 11 gene clusters encoding the biosynthesis of secondary metabolites. The N. sinuspersici UTMC102 genome was assembled into a single chromosomal scaffold

Minimum Information about a Biosynthetic Gene cluster

A wide variety of enzymatic pathways that produce specialized metabolites in bacteria, fungi and plants are known to be encoded in biosynthetic gene clusters. Information about these clusters, pathways and metabolites is currently dispersed throughout the literature, making it difficult to exploit. To facilitate consistent and systematic deposition and retrieval of data on biosynthetic gene clusters, we propose the Minimum Information about a Biosynthetic Gene cluster (MIBiG) data standard.Chemistry and Chemical Biolog

Design, development and application of whole cell based antibiotic specific biosensor

Synthetic biology techniques hold great promise for optimising the production of natural products by microorganisms. However, evaluating the phenotype of a modified bacterium represents a major bottleneck to the engineering cycle particularly for antibiotic producing actinobacteria strains, which grow slowly and are challenging to genetically manipulate. Here, we report the generation and application of antibiotic specific whole cell biosensor derived from TetR transcriptional repressor for use in identifying and optimising antibiotic producers. The constructed biosensor was successfully used to improve production of polyketide antibiotic pamamycin. However, an initial biosensor based on native genetic elements had inadequate dynamic and operating ranges. To overcome these limitations, we fine tuned biosensor performance through alterations of the promoter and operator of output module and the ligand affinity of transcription factor module, which enabled us to deduce recommendations for building and application of actinobacterial biosensor

Evaluation of heterologous promoters for genetic analysis of Actinoplanes teichomyceticus--Producer of teicoplanin, drug of last defense

Actinoplanes teichomyceticus is the only known producer of the valuable glycopeptide antibiotic teicoplanin. Random mutagenesis and selection were extensively applied to teicoplanin producers, while the gene engineering methods were not used, because of the paucity of genetic tools for A. teichomyceticus. Particularly, availability of promoters of different strength that are functional in Actinoplanes would be very useful for overexpression of beneficial genes. Here we report the use of a glucuronidase reporter system (gusA) for studying transcriptional activity in A. teichomyceticus and describe the behavior of a set of heterologous promoters in this strain. We reveal several elements that exceed in their strength the well-established Streptomyces promoter ermEp, underscoring the utility of the gusA reporter for Actinoplanes sp. Remarkable overproduction of teicoplanin was achieved by constructing strains carrying additional copies of the regulatory gene tcp28 under the control of one of the two most active promoters, moeE5p and actp, discovered in this study