Phylogenetic relationships and the newly discovered sexual state of Talaromyces flavovirens, comb. nov

Typical Talaromyces ascomata were observed on dry Quercus suber leaf litter amongst the characteristic synnemata of Penicillium aureocephalum, and they appear to represent the sexual state of the latter species. The species is a synonym of the older Lasioderma flavovirens, and we propose the new com...

Full description

Saved in:
Bibliographic Details
Published in:Mycotaxon 2012-10, Vol.122 (1), p.399-411
Main Authors: Visagie, Cobus M., Llimona, Xavier, Vila, Jordi, Louis-Seize, Gerry, Seifert, Keith A.
Format: Article
Language:English
Subjects:
Anamorph-Teleomorph Connections
Ascocarps
Botanical taxonomy
DNA BARCODING
Fongs
Fungi
Hyphomycetes
Lasioderma
Micologia
Mycology
Taxonomia botànica
Trichocomaceae
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Typical Talaromyces ascomata were observed on dry Quercus suber leaf litter amongst the characteristic synnemata of Penicillium aureocephalum, and they appear to represent the sexual state of the latter species. The species is a synonym of the older Lasioderma flavovirens, and we propose the new combination Talaromyces flavovirens. Lectotype and epitype specimens are designated for this name. The defining characters of the asexual state include yellow, short-stalked, mycetozoan-like synnemata with an unusual, almost closed terminal head of penicillate conidiophores intermixed with sinuous hyphae, and dark green conidia. Ascomata could not be induced in culture, but PCR amplifications of mating-type genes indicate the species is heterothallic. In nature, ascocarp initials appear to be antheridia coiled around clavate ascogonia, similar to those of T. flavus, and the thick-walled, spiny ascospores are also similar to those of T. flavus. ITS barcodes and β-tubulin sequences place T. flavovirens in a clade with T. apiculatus, T. flavus, T. funiculosus, T. galapagensis, T. pinophilus, T. macrosporus, and seven other species.
ISSN:0093-4666
DOI:10.5248/122.399