Unexpected Properties of Micromonosporae from Marine Origin

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DOI: 10.4236/aim.2015.56046    3,622 Downloads   4,630 Views  Citations

ABSTRACT

Members of the genus Micromonospora show a complex life cycle which normally involves the presence of substrate or vegetative mycelia and sporulation with single spores born on the vegetative hyphae followed by the synthesis of a dark extracellular polysaccharide. Bergey’s Manual states that micromonosporae rarely produces aerial mycelia (AM) and if so, is considered “sterile”. During the characterisation of novel micromonosporae from the Sea of Cortes, it was observed that AM is produced reproducibly in the presence of certain carbon and/or nitrogen sources. Micromanipulation of the AM subcultured onto fresh media produced colonies; hence, this structure should not be called “sterile”. TEM of the AM producing isolates suggests that the spores also show activity as reported for bacilli of marine origin. This would be the first report of the presence of “inducible” AM in micromonosporae of marine sources and that the spores of this genus have a role other than just dispersal.

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Maldonado, L. and Quintana, E. (2015) Unexpected Properties of Micromonosporae from Marine Origin. Advances in Microbiology, 5, 452-456. doi: 10.4236/aim.2015.56046.
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