GENETIC INTERACTION AMONG STREPTOMYCETES: HETEROKARYOSIS AND SYNKARYOSIS

Genetic Interaction among Streptomycetes: Heterokaryosis and Synkaryosis.

Heterokaryosis in Neurospora sitophila.

ETEROKARYOSIS has been extensively used as a major tool in formal genetic analysis of both Mendelian and non-Mendelian genes and in establishing gene-enzyme relationships. So far it is the only way to perform genetic anslysis of somatic cells in tissue culture (EPHRUSSI 1965; MINTZ and BAKER 1967). These aspects of heterokaryosis have been reviewed elsewhere ( JINKS 1965; FINCHAM 1966; DAVIS 19...

Heterokaryosis and alkaloid production in Claviceps purpurea.

Strain 275 FI of Claviceps purpurea, which produces large amounts of peptide alkaloids in submerged culture, is a heterokaryon; after several generations on agar media, it segregates the single components. These components (by us labeled V, C, and W) are stable and produce almost no alkaloids under described conditions of submerged culture. The mycelium of strain 275 FI consists of hyphae with ...

Streptomycetes: Characteristics and Their Antimicrobial Activities

The Streptomycetes are gram positive bacteria with a filamentous form that present in a wide variety of soil including composts, water and plants. The most characteristic of Streptomycetes is the ability to produce secondary metabolites such as antibiotics. They produce over two-thirds of the clinically useful antibiotics of natural origin (e.g., neomycin and chloramphenicol. Another characteri...

Streptomycetes: Characteristics and Their Antimicrobial Activities

The Streptomycetes are gram positive bacteria with a filamentous form that present in a wide variety of soil including composts, water and plants. The most characteristic of Streptomycetes is the ability to produce secondary metabolites such as antibiotics. They produce over two-thirds of the clinically useful antibiotics of natural origin (e.g., neomycin and chloramphenicol. Another characteri...