5 results about "Streptomyces lavendulae" patented technology

This invention relates to the fields of synthetic biology and metabolic engineering, specifically to a Streptomyces promoter selection marker and its application. The selection marker gene is *Streptomyces lilacinus*. Streptomyces lavendulae Glutamine indigo synthase gene derived from CGMCC 4.1386 idgS This invention screens endogenous promoters of *Streptomyces freundii* using heterologously expressed idgS genes; and constructs a detection system for endogenous promoters of *Streptomyces freundii* using this scheme, which can rapidly detect endogenous promoters of *Streptomyces freundii* and the strength of each promoter.

The present invention discloses a mycelium or bacterial cell and its application, and a method for breeding strains using the same. The mycelium or bacterial cell is a mycelium or bacterial cell obtained from the fermentation broth at the end of the rapid growth and accumulation stage of secondary metabolite production in the fermentation production process of the strain. When the mycelium or bacterial cell obtained by the present invention is used to breed Streptomyces lilacinus strains resistant to its own metabolites, a high-yield strain of sinoprotinin is screened out, and the industrial fermentation production level of the high-yield strain can be greatly improved, which greatly reduces the industrial production cost of sinoprotinin, lays a foundation for the market demand for sinoprotinin in biological pesticides, and meets the expansion of use in fields such as large-scale aerial spraying of green ecological agriculture.

The invention discloses a microbial fertilizer as well as a preparation method and application thereof. The microbial fertilizer comprises the following components: a precipitate of streptomyces lavendulae Hainan variant fermentation liquor, an inclusion agent, an adsorbent, a filler matrix, a carbon source, a nitrogen source and inorganic salt. The microbial fertilizer provided by the invention has good storage stability and an effect of promoting plant growth.

The invention discloses a caulis sinomenii leaf tissue endophytic bacterium strain L2-20 and application thereof, and belongs to the technical field of microorganisms. The strain is streptomyces lavendulaeL 2-20, and is preserved in the China Center for Type Culture Collection on February 24, 2025, the preservation address is Wuhan University, Wuhan, China, the preservation number is CCTCC NO: M2025279, and the preservation number is CCTCC NO: M2025279. Therefore, a large amount of clinical and industrial requirements on alkaloids are met, and a new treatment scheme is provided for treatment of diseases such as cancers, nervous systems, antibiosis, anti-inflammation, immune system maintenance and the like.

The invention discloses a method for preparing streptothricin F through fermentation of kitchen waste digestive juice and application of the streptothricin F. According to the method, the kitchen waste digestive juice and streptomyces lavendulae are subjected to aerobic co-fermentation and then subjected to liquid-phase purification, and a technical system for producing the agricultural antibiotic streptothricin F through fermentation of the kitchen waste digestive juice and separating and purifying the agricultural antibiotic streptothricin F is established. The agricultural antibiotic strepton F with high additional value and good antifungal effect is obtained, so that a new strategy is provided for realizing high-value utilization and harmless treatment of the kitchen waste digestive juice, the value of byproducts in the waste biomass utilization process is expected to be improved, the waste biomass utilization technical level is improved, and the method is worthy of popularization and application. The method has important significance on efficient and clean utilization and sustainable development of biomass.