On Certain Entomogenous Fungi

Speare, A. T.

doi:10.2307/3753407

Cited by 36 publications

(7 citation statements)

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“…seem to have a Hirsutella-anamorph. Patouillard (1892), in describing Hirsutella, erroneously placed the genus in Basidiomycota, a misconception later corrected by Speare (1920). Petch (1924) was the first to recognize an association between Hirsutella and Cordyceps, noting that the ant pathogen C. unilateralis had a Hirsutella anamorph, i.e.…”

Section: Discussionmentioning

confidence: 99%

Towards a phylogenetic classification of Cordyceps: ITS nrDNA sequence data confirm divergent lineages and paraphyly

Stensrud

Hywel‐Jones

Schumacher

2005

Mycological Research

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The ascomycetous genus Cordyceps accommodates endoparasitic species that attack arthropods or other fungi. Analyses of ITS nrDNA sequence data of 72 taxa from the teleomorph genera Cordyceps, Claviceps, Epichloe¨, and the anamorph genera Akanthomyces, Beauveria, Metarhizium, Hirsutella, Hymenostilbe, Paecilomyces, Polycephalomyces, and Tolypocladium assigned the taxa to four main evolutionary lineages not reflected in the current classification of Cordyceps. Ten subclades were recognized from separate analyses of data subsets. Judged from the ITS phylogenies, Cordyceps spp. with branched stromata were highly supported as a divergent lineage. Host specificity was found to be of limited phylogenetic significance, and several host shifts are suggested to have occurred during the evolution of Cordyceps. Similar ascospore morphology was not reflected in the phyletic groups, and closely related taxa showed large interspecific variation with respect to the number of segments in which the ascospores are divided. However, combinations of selected characters were found to delimitate some lineages, e.g. all Cordyceps spp. that attack hosts in the insect orders Coleoptera and Lepidoptera, and with non-immersed perithecia and clavate to acicular, brightly yellowish to reddish stromata, constituted a separate clade. Furthermore, all Cordyceps spp. with perithecia obliquely immersed in the stroma were recognized as a distinct monophyletic group. This clade is additionally characterized by the formation of anamorphs ascribable to the genus Hymenostilbe. The mycogenous Cordyceps spp. grouped in a separate subclade, interspersed by two cicadaen parasites and all Tolypocladium spp. except T. parasiticum. Tolypocladium and Beauveria were found to be polyphyletic. The included Claviceps and Epichloe¨taxa appeared to be derived within Cordyceps, thus making Cordyceps paraphyletic as suggested in other studies.

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Section: Discussionmentioning

confidence: 99%

Towards a phylogenetic classification of Cordyceps: ITS nrDNA sequence data confirm divergent lineages and paraphyly

Stensrud

Hywel‐Jones

Schumacher

2005

Mycological Research

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“…However this species is congeneric with Granulomanus aranearum (Petch) de Hoog & Paecilomyces variotii Bainier (Samson, 1974); other Samson (de Hoog, 1978 contains Sorosporella-like resting spores and synnemata with conidiogenous structures similar to thosii described by Speare (1917Speare ( , 1920 as SorosporeUa uveUa (Krass.) Giard.…”

Section: R a Samson And B L Brady 289mentioning

confidence: 99%

Paraisaria, a new genus for Isaria dubia, the anamorph of Cordyceps gracilis

Samson

Brady

1983

Transactions of the British Mycological Society

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The new genus Paraisaria is proposed for Isaria dubia. The entomogenous hyphomycete, frequently occurring on larvae of species of H epialus (Lepidoptera, Hepialidae), is characterized by white, loose synnemata consisting of verticillately-branched conidiophores with flaskshaped sympodially proliferating phialides. The conidiogenous cells give rise to one-celled, hyaline conidia in heads. Single-ascospore isolations confirmed earlier suggestions that this hyphomycete is the anamorph of Cordyceps gracilis.Isaria dubia was described by Delacroix (1893) on larvae of Hepialus lupulinus collected near Rouen, France. Delacroix compared the fungus with species of Clavaria and Thelephora, because he observed basidium-like structures with sterigmata.

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“…It is, therefore, probable that the hirsutella-like anamorph also fits within the Clavicipitaceae . Speare (1920) described Hirsutella as having verruciform synnemata with basally subulate phialides narrowing to slender necks and with a few conidia in a gelatinous matrix. Most species referred to Hirsutella sensu Speare are now consider anamorphs of Ophiocordyceps Petch (Sung et al .…”

Section: Discussionmentioning

confidence: 99%

Moelleriella zhongdongii: stroma development and identification of hirsutella-like and Aschersonia synanamorphs

Tadych

Chaverri

Bergen

et al. 2009

Mycological Research

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Collections of Moelleriella zhongdongii were made at the La Selva Biological Station in Costa Rica. Fresh collections were examined to evaluate developmental stages. Isolations were made from single part-ascospores and Aschersonia conidia. Moelleriella zhongdongii produces perithecia with evanescent asci and part-ascospores, and both hirsutella-like and Aschersonia synanamorphs. Both anamorphs were produced in pure cultures under cultural conditions optimal to induce the respective anamorphs. Low-nutrient conditions favoured production of the hirsutella-like anamorph while highnutrient conditions favoured development of the Aschersonia anamorph. The teleomorph developed on leaves of host plants but were not produced in vitro.

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On Certain Entomogenous Fungi

Cited by 36 publications

References 0 publications

Towards a phylogenetic classification of Cordyceps: ITS nrDNA sequence data confirm divergent lineages and paraphyly

Towards a phylogenetic classification of Cordyceps: ITS nrDNA sequence data confirm divergent lineages and paraphyly

Paraisaria, a new genus for Isaria dubia, the anamorph of Cordyceps gracilis

Moelleriella zhongdongii: stroma development and identification of hirsutella-like and Aschersonia synanamorphs

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