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More white verticillium-like anamorphs with erect conidiophores

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Abstract

This study focuses on the former Verticillium section Albo-erecta that included white or whitish species with verticillium-like, erect conidiophores. Its type species was Verticillium fungicola, which was transferred to Lecanicillium, a genus that otherwise contains species with prostrate conidiophores. Phylogenetic analysis of ITS, 18S and 28S rDNA sequences revealed that this group is heterogeneous and its members belong to at least three families. The present study is a first step to its resolution. Supported by analyses of 68 sequences of ITS, 23 sequences of 18S and 43 sequences of 28S ribosomal DNA, the species are distributed over three families. In the Cordycipitaceae, Leptobacillium gen. nov. is described with L. leptobactrum comb. nov. and its new variety, calidius. In the Hypocreaceae, Hypomyces is treated with one new combination from former Nectriopsis, H. tubariicola, and two new anamorphic species, H. ellipsosporus and H. subglobosus; in Sphaerostilbella, one new anamorphic species, S. parabroomeana, is described. In the Bionectriaceae, anamorphic isolates of Nectriopsis requiring a new combination, N. lindauiana, and a new species, N. fuliginicola, are described. Parsimony analysis of the LSU suggests that Ovicillium gen. nov. with four new species, O. attenuatum, O. oosporum, O. subglobosum and O. napiforme, is a member of the Bionectriaceae by 93 % bootstrap support. Of uncertain family classification are Chlamydocillium gen. nov. with one new soil-borne species, C. cyanophilum, and Chlorocillium gen. nov. based on Acremonium griseum Petch. A few further white verticillium-like anamorphs, particularly V. biguttatum, could not yet be reclassified.

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Acknowledgements

We are greatly indebted to the numerous mycologists listed in the text who contributed cultures to this study. Kadri Põldmaa contributed valuable information on the systematics of the Hypocreaceae treated here. We had the kind support of the CBS staff, Richard Summerbell for various assistance, Benjamin Stielow contributed sequences of Nectriopsis violacea, Trix Mercks and Yda Vlug for handling the cultures, and Mieke Starink-Willemse for assistance in the molecular laboratory. Hamideh Sobhani-Tehrani assisted in the laboratory works at CBS. Tom Gräfenhan and an anonymous reviewer assisted editorially. Mehrdad Mehranfard (Tehran, Iran) inked the pencil drawings prepared by WG. Bita Asgari also helped with some molecular works in Tehran.

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  1. Walter Gams

    Present address: , Molenweg 15, 3743 CK, Baarn, The Netherlands

Authors and Affiliations

  1. Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), P.O. Box 1454, Tehran, 19395, Iran

    Rasoul Zare

  2. Centraalbureau voor Schimmelcultures, Utrecht, The Netherlands

    Walter Gams

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  1. Rasoul Zare
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Correspondence to Walter Gams.

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Section Editors: Pedro Crous; Roland Kirschner

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Zare, R., Gams, W. More white verticillium-like anamorphs with erect conidiophores. Mycol Progress 15, 993–1030 (2016). https://doi.org/10.1007/s11557-016-1214-8

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