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Protostelium nocturnum Spiegel
Life   Amoebozoa   Eumycetozoa   Protosteliaceae   Protostelium


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IDnature guide

Overview
Grows and fruits well on weak MY agar or hay infusion agar with Xanthomonas fragariae Kennedy and King (Fla-20 isolate of Olive) or Rhodotorula mucilaginosa (Jorg.) Harrison as a food source, and on CM+ agar with Rhodotorula. It grows well but fruits poorly on CM+ with X. fragariae. Sporocarps minute with stalks (15.6-) 18-26 (--31.2) µm long. Spores, spherical, uninucleate, and (6.5-)7.5-10.4 µm in diam. are forcibly discharged. Stalk completely disappears during spore discharge. Amoebae are minute, uninucleate, and orange-pigmented; Amoebae contain a nucleus with a single, central nucleolus. Amoebae contain one or more contractile vacuoles and many food vacuoles. Orange pigmented lipid droplets are also present. On CM+ agar these are so pronounced that amoebae look pinkish-orange in mass. Amoebae are relatively smooth in outline on dry agar. Acutely pointed pseudopodia and lamellopodia become increasingly prominent as medium becomes more liquid. Microcysts spherical or ellipsoidal, similar in size to spores.

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Acknowledgements
The Eumycetozoan Project -- working to understand the ecology, sytematics and evolution of myxomycetes, dictostelids and protostelids -- the true slime molds.

Sponsored by grants from the National Science Foundation.


Feedback
Please send any corrections and comments about this page to John Shadwick
Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA
email: jshadwi@uark.edu
phone: USA-479-575-7393.


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Updated: 2024-03-28 14:36:55 gmt
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