Khan, Zoya (2019) Genomic And Physiological Characterisation Of Selected Arctic, Temperate And Tropical Pseudanabaena Strains. PhD thesis, Universiti Sains Malaysia.
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Abstract
Three filamentous cyanobacteria strains obtained from the High Arctic Svalbard archipelago, temperate (England) and tropical (Malaysia) regions were characterized using combined phenotypic and genetic approaches. Morphological and ultrastructural observations were performed together with growth measurements. Cell dimensions, thylakoid arrangement and apical cell shape of the Arctic and temperate strains were consistent with the description of Pseudanabaena catenata while the tropical strain was identified as Pseudanabaena amphigranulata. 16S rRNA gene analysis showed that the Arctic strain USMAC16 and temperate strain NIVA-CYA146 shared high sequence similarity (100% and 98%, respectively) with P. catenata SAG 1464-1. The tropical strain USMAC18 shared only 94% sequence similarity with Pseudanabaena sp. PCC 6802, suggesting that the strain is distinctly different from the strains currently available in the databases. All three strains showed identical internal transcribed spacer (ITS) configuration with other strains of Pseudanabaena.
| Item Type: | Thesis (PhD) |
|---|---|
| Subjects: | Q Science > QH Natural history > QH1 Natural history (General - Including nature conservation, geographical distribution) |
| Divisions: | Pusat Pengajian Sains Kajihayat (School of Biological Sciences) > Thesis |
| Depositing User: | Mr Aizat Asmawi Abdul Rahim |
| Date Deposited: | 28 Oct 2026 08:31 |
| Last Modified: | 28 Oct 2026 08:31 |
| URI: | http://eprints.usm.my/id/eprint/65192 |
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