Taxonomy of Botryotrichum luteum sp. nov. based on Morphology and Phylogeny Isolated from Soil in Korea

Jung-Joo Ryu; Kallol Das; Seong-Keun Lim; Soo-Min Hong; Seung-Yeol Lee; Hee-Young Jung

doi:10.1080/12298093.2023.2192613

Taxonomy of Botryotrichum luteum sp. nov. based on Morphology and Phylogeny Isolated from Soil in Korea

Mycobiology. 2023 Apr 24;51(2):72-78. doi: 10.1080/12298093.2023.2192613. eCollection 2023.

Authors

Jung-Joo Ryu¹, Kallol Das¹, Seong-Keun Lim¹, Soo-Min Hong¹, Seung-Yeol Lee^{1

2}, Hee-Young Jung^{1

2}

Affiliations

¹ College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea.
² Institute of Plant Medicine, Kyungpook National University, Daegu, Korea.

Abstract

In this study, a fungal strain KNUF-22-025 belonging to the genus Botryotrichum was isolated from the soil in Korea. The cultural and morphological characteristics of this strain differed from those of closely related species. On malt extract agar, strain KNUF-22-025 showed slower growth than most of the related species, except B. domesticum. The conidia size (9.6-21.1 × 9.9-18.4 µm) of strain KNUF-22-025 was larger than those of B. piluliferum, B. domesticum, and B. peruvianum but smaller than those of B. atrogriseum and B. iranicum. Conidiophores in strain KNUF-22-025 (137 µm) were longer than those in other closely related species but shorter than those in B. atrogriseum. Multi-locus analysis of molecular markers, such as ITS, 28S ribosomal DNA, RBP2, and TUB2 revealed that strain KNUF-22-025 was distinct from other Botryotrichum species. Thus, this strain is proposed as a novel species based on morphological characteristics along with molecular phylogeny and named Botryotrichum luteum sp. nov.

Keywords: Botryotrichum luteum; morphology; phylogeny; saprotrophic soil fungi.

Grants and funding

This work was supported by a grant from the National Institute of Biological Resources, funded by the Ministry of Environment of the Republic of Korea (NIBR202203112).