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The Korean Society of Phycology (한국조류학회(藻類))
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First record of the cyanobacterial genus Wilmottia (Coleofasciculaceae, Oscillatoriales) from the South Orkney Islands (Antarctica)

  • Received : 2020.11.30
  • Accepted : 2021.05.06
  • Published : 2021.06.15
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Abstract

Two cyanobacterial morphotypes isolated from Signy Island, South Orkney Islands, maritime Antarctica were characterised using a polyphasic approach combining morphological, cytological and molecular analyses. These analyses showed that the strains grouped with members of the genus Wilmottia. This genus currently includes three species, W. murrayi, W. stricta, and W. koreana. Both morphotypes analysed in this study were placed within the clade of W. murrayi. This clade showed a well-supported separation from Antarctic and New Zealand strains, as well as strains from other regions. W. murrayi was first described from Antarctica and is now known from several Antarctic regions. Confirmation of the occurrence of W. murrayi at Signy Island significantly extends its known distribution in Antarctica. In addition, a new combination, W. arthurensis, is suggested for Phormidium arthurensis.

Keywords

Acknowledgement

We thank Dr. Japareng Lalung for collection of soil samples from Signy Island and the staff at the British Antarctic Survey (BAS) Signy Island research station for logistical and other practical support. We thank Laura Gerrish (BAS Mapping and Geographic Information Centre) for preparation of the map in Fig. 1. This study received funding support from YPASM Berth Support, YPASM Fellowship 304/PBIOLOGI/650963, RUI grant 1001/PBIOLOGI/811305 and Flagship grant 304/PBIOLOGI/650723/P131. Peter Convey is supported by NERC core funding to the BAS 'Biodiversity, Evolution and Adaptation' Team. This study contributes to the international SCAR 'State of the Antarctic Ecosystem' (AntEco) research programme.

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