Exophiala macquariensis sp. nov., a cold adapted black yeast species recovered from a hydrocarbon contaminated sub-Antarctic soil

A new black yeast species, Exophiala macquariensis is described that is a member of the ascomycete family Herpotrichiellaceae, order Chaetothyriales. The genus Exophiala is comprised of opportunistic pathogens isolated from clinical specimens as well as species recovered from hydrocarbon contaminate...

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Bibliographic Details
Published in:Fungal Biology
Main Authors: Zhang, Chengdong, Sirijovski, Nick, Adler, Lewis, Ferrari, Belinda C.
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2019
Subjects:
Biological Systematics
Botany
Bioremediation
Diesel fuel
Macquarie island
Soil fungi
Toluene degradation
Antarc*
Antarctic
Macquarie Island
Online Access:https://lup.lub.lu.se/record/8213bb2d-aa8f-4b43-980f-415fa7858f3b
https://doi.org/10.1016/j.funbio.2018.11.011
Description
Summary:A new black yeast species, Exophiala macquariensis is described that is a member of the ascomycete family Herpotrichiellaceae, order Chaetothyriales. The genus Exophiala is comprised of opportunistic pathogens isolated from clinical specimens as well as species recovered from hydrocarbon contaminated environments. Several species have been reported to be able to degrade benzene, toluene, ethylbenzene and xylenes. Here, a novel species of Exophiala (CZ06) previously isolated from a Sub-Antarctic, Macquarie Island soil that was spiked with Special Antarctic Blend diesel fuel (SAB) is described. This isolate has the capacity of toluene biodegradation at cold temperatures. Multilocus sequence typing showed that this fungus was closely related to the pathogenic species Exophiala salmonis and Exophiala equina. With the capacity to utilise hydrocarbons as a sole carbon source at 10 °C, this fungus has great potential for future bioremediation applications.

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