compost actinomycetes ?

Bruce A. Caldwell caldwelb at
Mon Sep 10 01:41:42 EST 2001

   Just a microbiological note: "compost actinomycetes" are actually
bacteria.. Long mistaken for fungi based solely on their filamentous
growth, they have true procaryotes with gram+ cell wall and  bacteria
ribosomes. In fact, the actinomycetes are the source of most anti-fungal
   While there are thermophilic fungi that are important in composting,
actinomycetes are much more important because of their greater temperature

Bruce Caldwell
Department of Forest Science
321 Richardson Hall
Oregon State University
Corvallis  OR  97331-5752

"Daniel B. Wheeler" wrote:

> Some time ago, there was a discussion on either this ng or
> alt.nature.mushrooms about the total number of fungi present in the
> world.       ...8<---- text cut --->8...         BTW, the above total
> may sound overestimated by some. But when suchthings as rusts, smuts,
> ectomycorrhizae, endomycorrhizae, soil, and compost actinomycetes are
> added, it doesn't seem an overestimate (atleast to me) at all. Then you
> have the newly discovered endophytic

> fungi, found inside the living leaves of trees and plants, only a few
> of which have ever been examined to date...  ...8<---
> Daniel B. Wheeler

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