At 150.4 miles (242.0 km), Lechuguilla Cave is the eighth-longest explored cave in the world and the second deepest in the continental United States. It is most famous for its unusual geology, rare formations, and pristine condition.
Streptomyces is the largest genus of Actinomycetota, and the type genus of the family Streptomycetaceae. Over 700 species of Streptomyces bacteria have been described. As with the other Actinomycetota, streptomycetes are gram-positive, and have very large genomes with high GC content. Found predominantly in soil and decaying vegetation, most streptomycetes produce spores, and are noted for their distinct "earthy" odor that results from production of a volatile metabolite, geosmin. Different strains of the same species may colonize very diverse environments.
Streptomyces griseus is a species of bacteria in the genus Streptomyces commonly found in soil. A few strains have been also reported from deep-sea sediments. It is a Gram-positive bacterium with high GC content. Along with most other streptomycetes, S. griseus strains are well known producers of antibiotics and other such commercially significant secondary metabolites. These strains are known to be producers of 32 different structural types of bioactive compounds. Streptomycin, the first antibiotic ever reported from a bacterium, comes from strains of S. griseus. Recently, the whole genome sequence of one of its strains had been completed.
Ferroverdin refers to three different coordination compounds that were first isolated in 1955 by Chain, Tonolo, and Carilli. It consists of three p-vinylphenyl-3-nitroso-4-hydroxybenzoate ligands complexed with a ferrous ion. Ferroverdin is a green pigment produced in the mycelium of species of Streptomyces. It is claimed to be the “first stable ferrous compound to be found in nature.” There are three types of ferroverdin: A, B, and C. In ferroverdin A, both R groups are hydrogens. In ferroverdin B, R1 is a hydroxyl group (OH) and R2 is a hydrogen (according to a diagram in the paper, the R-groups are on the vinyl group, on the carbon opposite the phenyl; they are respectively trans and cis relative to the phenyl group). In ferroverdin C, R1 is a hydrogen while R2 is a carboxyl group (COOH). Ferroverdin is immune to chelating and oxidizing agents due to the strong interaction between the ligands and ferrous ion. However, it can be broken down by reductive processes.1 The presence of ferroverdin peaks when there are four to eight μg/mL of Fe2+ in the media usually in the form of a salt.
Streptomyces nodosus is a bacterial species in the genus Streptomyces.
Streptomyces antibioticus is a gram-positive bacterium discovered in 1941 by Nobel-prize-winner Selman Waksman and H. Boyd Woodruff. Its name is derived from the Greek "strepto-" meaning "twisted", alluding to this genus' chain-like spore production, and "antibioticus", referring to this species' extensive antibiotic production. Upon its first characterization, it was noted that S. antibioticus produces a distinct soil odor.
Streptomyces amritsarensis is a bacterium species from the genus Streptomyces which has been isolated from soil from Punjab in India. Streptomyces amritsarensis has antimicrobial activity.
Streptomyces araujoniae is a bacterium species from the genus of Streptomyces which has been isolated from a potato tubercle.
Streptomyces asiaticus is a bacterium species from the genus Streptomyces which has been isolated from the ectorhizosphere from the plant Falcataria moluccana in Java on the island Yogyakarta in Indonesia.
Streptomyces durhamensis is a bacterium species from the genus of Streptomyces which has been isolated from soil from a tomato plant. Streptomyces durhamensis produces durhamycin and filipin.
Streptomyces mayteni is a bacterium species from the genus of Streptomyces which has been isolated from roots from the plant Maytenus austroyunnanensis.
Kitasatospora misakiensis is a bacterium species from the genus of Kitasatospora which has been isolated from soil in Japan. Kitasatospora misakiensis produces tubermycin A, tubermycin B, misakimycin and the endothelin receptor antagonist BE-18257B.
Streptomyces muensis is a bacterium species from the genus of Streptomyces which has been isolated from a limestone quarry from Tangkhul Hundung in Manipur in India.
Streptomyces phytohabitans is a bacterium species from the genus of Streptomyces which has been isolated from the plant Curcuma phaeocaulis from the Sichuan Province in China. Streptomyces phytohabitans produces the macrolides novonestmycin A and novonestmycin B.
Streptomyces sanglieri is a bacterium species from the genus of Streptomyces which has been isolated from soil from a hay meadow. Streptomyces sanglieri produces the antibiotic lactonamycin Z.
Streptomyces tritolerans is a bacterium species from the genus of Streptomyces which has been isolated from soil in Karnataka in India.
Streptomyces vietnamensis is a bacterium species from the genus of Streptomyces which has been isolated from forest soil in Vietnam.
Streptomyces gamaensis is a bacterium species from the genus of Streptomyces which has been isolated from soil from Gama in Chad. Streptomyces gamaensis has an antifungal activity.
Zixibacteria is a bacterial phylum with candidate status, meaning it had no cultured representatives. It is a member of the FCB group
Streptomyces swartbergensis is a bacterium species from the genus of Streptomyces which has been isolated from soil from banks of the Gamka River from the Cape Province in South Africa. Streptomyces swartbergensis produces antibiotics.
