摘要:
The present invention relates to a method for improving plant productivity, and in particular crop yields, via the introduction of an endophytic microorganism to the subject plant. More particularly, the present invention is directed to a method for improving cereal crop productivity via the introduction of an endophytic actinomycete to the subject crop. The method of the present invention facilitates the improvement of crop productivity , such as increasing germination, by, inter alia, providing the subject plant with disease bio-control capabilities and up-regulating plant growth promoting activities. The present invention is also directed to novel endophytic microorganisms and uses thereof.
摘要:
The present invention relates to a new microbial process for the preparation of the compound of formula (I) from a compound of general formula (II) wherein R stands for an alkali metal or ammonium ion, by the submerged cultivation of the strain able to 6 beta -hydroxylate a compound of formula (II) in aerobic fermentation and by the separation and purification of the product of formula (I) formed in the course of the bioconversion, which comprises cultivating a strain of the genera Micromonospora able to 6 beta -hydroxylate a compound of the general formula (II), wherein R is as defined above, on a nutrient medium containing assimilable carbon and nitrogen sources and mineral salts at 25-32 DEG C, thereafter feeding the substrate to be transformed into the developed culture, then fermenting the substrate until the end of bioconversion, then separating the compound of formula (I) from the culture broth and, if desired, purifying the same.
摘要:
The novel antitumor antibiotic of formula (I) designated herein as dynemicin C is produced by fermentation of Micromonospora chersina M956-1 mutant F1085 (ATCC-55077). Dynemicin C and its triacetate derivative possess antibacterial and antifungal activity and also inhibit the growth of mammalian tumors.
摘要:
The invention is N-acyl and dihydro-N-acyl analogs of formula (I) of the family of antibacterial and antitumor agents known collectively as the E33288 complex. wherein W is R is hydrogen or a branched or unbranched alkyl (C₁-C₁₀) or alkylene (C₁-C₁₀) group, an aryl or hetero-aryl group, or an aryl-alkyl (C₁-C₅) or hetero-aryl-alkyl (C₁-C₅) group, all optionally substituted by one or more hydroxy, amino, carboxy, halo, nitro, lower (C₁-C₃) alkoxy, or lower (C₁-C₅) thioalkoxy groups; R₁ is H or R₂ is CH₃, C₂H₅ or CH(CH₃)₂; R₄ is OH when R₅ is H or R₄ and R₅ taken together are a carbonyl; and X is an iodine or bromine atom.
摘要:
Neuraminidase is produced by culturing a neuraminidase producing microorganism belonging to the genus Micromonospora. The neuraminidase is useful for the quantitative determination of a sialic acid-containing substance in a sample.
摘要:
This disclosure describes a novel antibacterial agent designated LL-E10985a, its production by aerobic fermentation of a new subspecies of Micromonospora citrea NRRL 18351 mutants thereof, and the isolation and purification thereof.
摘要:
Antibacterial and antitumor agents designated LL-E33288ε-I and LL-E33288ε-Br, their production by strains of Micromonospora echinospora ssp. calichensis designated NRRL-15839, NRRL-15975 and NRRL-18149, and chemical processes for their production, are disclosed. Novel intermediates prepared in the chemical processes are disclosed. Processes for producing reductively aromatized derivatives of other antibiotics are also disclosed.
摘要:
Disclosed are strains of actinomycetes that produce manzamines or derivatives thereof, methods of isolating said strains, and a 16S rRNA useful in identifying manzamine-producing bacteria.