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Aerial hyphae in surface cultures of Streptomyces lividans and Streptomyces coelicolor originate from viable segments surviving an early programmed cell death event

Lookup NU author(s): Dr Dennis Claessen

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Abstract

Morphogenesis in streptomycetes is characterized by the formation of aerial hyphae that emerge from the substrate mycelium. Despite many years of study, a detailed picture of the events that occur during the transition from substrate to aerial mycelium has yet to be defined. In this paper, it was shown that a specific cell death event takes place during early growth of the substrate mycelium in Streptomyces coelicolor and Streptomyces lividans. Subsequently, a second mycelium starts to develop from the remaining viable segments of these substrate hyphae in the form of islands, which progressively cover the plate surface. Interestingly, the genes coding for the chaplin and rodlin proteins, which are involved in the formation of the hydrophobic layer characteristic of aerial structures, are specifically expressed in the second mycelium islands, strongly suggesting that this second mycelium should be considered the early precursor of the mature hydrophobic aerial mycelium. © 2007 Federation of European Microbiological Societies.

Publication metadata

Author(s): Manteca A, Claessen D, Lopez-Iglesias C, Sanchez J

Publication type: Article

Publication status: Published

Journal: FEMS Microbiology Letters

Year: 2007

Volume: 274

Issue: 1

Pages: 118-125

ISSN (print): 0378-1097

ISSN (electronic): 1574-6968

Publisher: Wiley-Blackwell Publishing Ltd.

URL: http://dx.doi.org/10.1111/j.1574-6968.2007.00825.x

DOI: 10.1111/j.1574-6968.2007.00825.x

PubMed id: 17663705

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