Key to the Korean Nematode-Trapping Fungi with Additional Descriptions of Arthrobotrys flagrans and A. superba

Jongmin  Seo1   Heonil  Kang1   Giyoon  Kwon 1   Namsook  Park2   Changhwan  Bae3   Insoo  Choi12,*   

1Forest Biodiversity Division, Korea National Arboretum, Pocheon 11186, Korea
2Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 27709, Korea
3Biological and Genetic Resource Assessment Division, National Institute of Biological Resource, Incheon 22689, Korea

Abstract

Nematophagous fungi can capture, kill, and digest nematodes using a specific capturing organ. Of the nematophagous fungi, while Arthrobotrys flagrans and A. superba have been described previously, certain characteristics have not been described. For a detailed description of the two nematophagous fungi, the fungi were isolated from soil samples and produced in a pure culture. Morphological characteristics, such as predatory ability (according to the nematode species), shape, and size of predatory organ, conidia, and chlamydospore were investigated and they were used for identification of the fungal isolates along with molecular phylogenetic analysis. Furthermore, this study provides the classification key for 21 nematophagous species

Figures & Tables

Fig. 1. Predacity of and for five nematode species. A, ; C, sp.; D, sp.; P, ; R, Root-knot nematode, .