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ARS Home » Research » Publications at this Location » Publication #103979


item Rossman, Amy
item Samuels, Gary

Submitted to: Studies in Mycology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/1/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary: The ability to control plant pathogenic fungi depends on knowledge of their behavior that can often be predicted based on their accurate classification. Yet, many plant pathogenic fungi are known only as asexually reproducing species and therefore classifying them is difficult. This paper reviews the classification of asexually reproducing fungi that belong in the Hypocreales. There is an equivalence between genera that ar sexually reproducing and asexually reproducing that will allow more accurate classification of asexual fungi. Using this publication it will be easier to provide meaningful scientific names and identifications for the many plant pathogenic and non-plnant pathogenic fungi in this order.

Technical Abstract: After a recent reevaluation of the three major families of ascomycetous Hypocreales include 56 teleomorph genera many of which correlate with anamorph genera. Most of the 20 genera in the Nectriaceae exhibit an equivalence in sexual and asexual characteristics. With exceptions the asexual states of the 26 genera in the Bionectriaceae are relatively nondescript acremonium-like and are not useful for defining genera in this family. The Hypocreaceae consist primarily of the genus Hypocrea with Trichoderma anamorphs and Hypomyces having a diverse array of anamorphs. A few anomalous species allied with Hypocrea have verticillium-like or acremonium-like anamorphs; in these cases the sexual state is often as atypical as the anamorph. Groups of species within Hypomyces correspond with anamorph and biological characteristics, particularly the host. Within the hypocrealean lineages, monophyletic genera are emerging that encompass both sexual and asexual fungi.