Orbilia querci sp. nov. and its knob-forming nematophagous anamorph

Orbilia querci, a new nematode-trapping fungus, was found on rotten wood of Quercus sp. in Huai-rou County, Beijing, China. It is characterized by having a tear-shaped spore body in the cylindrical ascospore. Pure culture was obtained from the ascospores. Conidiophores were simple or occasionally br...

Full description

Saved in:
Bibliographic Details
Published in:FEMS microbiology letters 2005-04, Vol.245 (1), p.99-105
Main Authors: Liu, Bin, Liu, Xing-Zhong, Zhuang, Wen-Ying
Format: Article
Language:English
Subjects:
Agar
anamorphs
Animals
Ascomycota
Ascomycota - classification
Ascomycota - genetics
Ascomycota - physiology
Ascomycota - ultrastructure
Ascospores
Biological and medical sciences
Conidia
Culture Media
Cylindrical bodies
Dactylellina querci
descriptions
Divergence
DNA, Fungal - analysis
DNA, Ribosomal Spacer - analysis
Fundamental and applied biological sciences. Psychology
fungal anatomy
Fungi
Hyphomycetes
Imperfect state
Knobs
Microbiology
Molecular Sequence Data
Morphology, structure, chemical composition
Mycology
Nematoda
Nematoda - microbiology
Nematodes
Nematophagous fungi
New species
Orbilia
Orbilia querci
Orbilia teleomorph
Orbiliaceous fungi
Perfect state
Phylogeny
Pure culture
Quercus
Quercus - microbiology
Septum
Sequence Analysis, DNA
Spores, Fungal - ultrastructure
Teleomorph-anamorph connection
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:Orbilia querci, a new nematode-trapping fungus, was found on rotten wood of Quercus sp. in Huai-rou County, Beijing, China. It is characterized by having a tear-shaped spore body in the cylindrical ascospore. Pure culture was obtained from the ascospores. Conidiophores were simple or occasionally branched, bearing a single conidium on the tip. Conidia were spindle-shaped, mostly with 3-septa. Nematodes were captured by means of adhesive stalked knobs. The adhesive knobs were produced frequently on nutritional agar plates even in the absence of challenging nematodes. Its anamorph is placed in Dactylellina and named as D. querci. The sequence divergence of the ITS1 region between the fungus and the other knob-forming species tested was 23.8–33.4%, supporting O. querci as a distinct species. This is the first report of the connection between a knob-forming nematophagous hyphomycete and an Orbilia teleomorph.
ISSN:0378-1097
1574-6968
DOI:10.1016/j.femsle.2005.02.027