Streptomyces (genus - antagonists)
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Streptomyces (antagonists) Waksman & Henrici 1943
Streptomyces is a large genus with over 500 species of soil-inhabiting bacteria. They are mainly saprophytes but various species are known to be important plant pathogens causing root and tuber diseases, see Streptomyces (plant patogens). However, several species or strains are beneficial and are antagonistic to plant pathogens, e.g. Streptomyces griseoviridis.
The bacteria are aerobic and Gram-positive. They resemble fungi and are filamentous, forming branching hyphae in a "mycelium" as well as spores (conidia). Following a period of vegetative growth the species produce aerial hyphae which rise over the substrate once the nutrients are depleted. The aerial hyphae are transformed into spores with thick walls which become dormant, disperse and later germinate.
The following antagonistic species are currently entered in the system:
