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Trichoderma aureoviride: phylogenetic position and characterization

Published online by Cambridge University Press:  21 May 2001

Elke LIECKFELDT ,
Cornelia M. KULLNIG ,
Christian P. KUBICEK ,
Gary J. SAMUELS  and
Thomas BÖRNER
Elke LIECKFELDT
Affiliation:
Humboldt-Universität zu Berlin, Institut für Biologie (Genetik), Chausseestr. 117, D-10115 Berlin, Germany.
Cornelia M. KULLNIG
Affiliation:
Technische Universität Wien, Institut für Biochemische Technologie und Mikrobiologie, Getreidemarkt 9/172–5, A-1060 Wien, Austria.
Christian P. KUBICEK
Affiliation:
Technische Universität Wien, Institut für Biochemische Technologie und Mikrobiologie, Getreidemarkt 9/172–5, A-1060 Wien, Austria.
Gary J. SAMUELS
Affiliation:
United States Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, Room 304, B-011A, BARC-West, Beltsville, MD 20705–2350, USA. E-mail: garys@int.ars-grin.gov
Thomas BÖRNER
Affiliation:
Humboldt-Universität zu Berlin, Institut für Biologie (Genetik), Chausseestr. 117, D-10115 Berlin, Germany.
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Abstract

The identity of strains identified as Trichoderma aureoviride/Hypocrea aureoviridis was reconsidered. Trichoderma aureoviride was isolated originally from a specimen identified as H. aureoviridis and thus is H. aureoviridis. The morphological and molecular characters of most strains identified as T. aureoviride differ from those of the ex-type but are more typical of T. harzianum, a member of sect. Pachybasium. Molecular data do not support inclusion of T. aureoviride in sect. Trichoderma, nor was there strong phenotypic similarity between H. aureoviridis and H. rufa. In the ITS phylogeny the T. aureoviride ex-type and other collections of H. aureoviridis form a strongly supported clade that is separate from any other recognized section of Trichoderma. Hypocrea vinosa, which was originally included in the T. aureoviride aggregate species concept, is distinct from T. aureoviride, but closely allied with H. rufa/T. viride. Trichoderma aureoviride/H. aureoviridis is a rare species, restricted to the UK and the Netherlands. We redefine T. aureoviride, limiting it to strains with very slow growth rate, effuse conidiation, and the ITS-1 and 2 sequence type D.

Type
Research Article
Information
Mycological Research , Volume 105 , Issue 3 , March 2001 , pp. 313 - 322
Copyright
© The British Mycological Society 2001

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