Summary
Two aerobic mesophilic species of a new genus belonging to the familyActinoplanaceae are described under the nameDactylosporangium (D. aurantiacum strainD/748 type species andD. thailandensis strainD/449). The new genus is characterized by the production of finger shaped sporangia emerging directly from the vegetative mycelium.
The motile sporangiospores, three to four in number are arranged in a single straight row inside the sporangium.
The genusActinoplanes of the familyActinoplanaceae was described in 1950 byCouch and is characterized by the bacteria-like, flagellated spores formed in sporangia. Other members of the familyActinoplanaceae have been studied byKarling (1954),Rothwell (1957) andCross et al. (1963) in the United States, byGaertner (1955) in Germany, byVan Brummelen andWent (1957) in Holland, byNonomura andOhara (1960) in Japan, byTaig et al. (1962),Tsyganov et al. (1963), andKoniev et al. (1965) in Russia. Except for the organisms studied byKarling and byRothwell, which undoubtedly belonged to theActinoplanes but were not studied in pure culture, the organisms studied by most of the other authors belonged to the genusStreptosporangium.
Three new genera having motile spores were described more recently:Ampullariella andSpirillospora described byCouch (1963, 1964), andPlanomonospora byThiemann et al. (1967b).
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Thiemann, J.E., Pagani, H. & Beretta, G. A new genus of theActinoplanaceae: Dactylosporangium, gen. nov.. Archiv. Mikrobiol. 58, 42–52 (1967). https://doi.org/10.1007/BF00691167
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DOI: https://doi.org/10.1007/BF00691167