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Identification and phenotypic plasticity of Pseudanabaena catenata from the Svalbard archipelago

Khan, Zoya; Wan Omar, Wan Maznah; Merican, Faradina Merican Mohd Sidik; Azizan, Asmimie Asmawarnie; Foong, Choon Pin; Convey, Peter ORCID: https://orcid.org/0000-0001-8497-9903; Najimuddin, Nazalan; Smykla, Jerzy; Alias, Siti Aisyah. 2017 Identification and phenotypic plasticity of Pseudanabaena catenata from the Svalbard archipelago. Polish Polar Research, 38 (4). 445-458. https://doi.org/10.1515/popore-2017-0022

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Abstract/Summary

A filamentous benthic cyanobacteria, strain USMAC16, was isolated from the High Arctic Svalbard archipelago, Norway, and a combination of morphological, ultrastructural and molecular characterisation (16S rRNA gene sequence) used to identify to species level. Cell dimensions, thylakoid arrangement and apical cell shape are consistent with the Pseudanabaena genus description. The molecular characterisation of P. catenata gave 100% similarity with Pseudanabaena catenata SAG 1464-1, originally reported from Germany. Strain USMAC16 was cultured under a range of temperature and photoperiod conditions, in solid and liquid media, and harvested at exponential phase to examine its phenotypic plasticity. Under different culture conditions, we observed considerable variations in cell dimensions. The longest cell (5.91±0.13 μm) was observed at 15°C under 12:12 light:dark, and the widest cell (3.24±0.06 μm) at 4°C under 12:12 light: dark in liquid media. The study provides baseline data documenting the morphological variation of P. catenata in response to changing temperature regimes.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1515/popore-2017-0022
Programmes: BAS Programmes > BAS Programmes 2015 > Biodiversity, Evolution and Adaptation
Date made live: 13 Dec 2017 14:52 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/517468

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