High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae)
Forty-eight isolates of Pseudo-nitzschia species were established from the Miri coast of Sarawak (Malaysian Borneo) and underwent TEM observation and molecular characterization. Ten species were found: P. abrensis, P. batesiana, P. fukuyoi, P. kodamae, P. lundholmiae, P. multistriata, P. pungens,...
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| Format: | Article |
| Language: | English |
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Phycological Society of America
2016
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| Online Access: | http://ir.unimas.my/id/eprint/12657/ http://ir.unimas.my/id/eprint/12657/1/HIGH%20DIVERSITY%20-%20Copy.pdf |
| _version_ | 1848837244993929216 |
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| author | Sing, Tung Teng Suh, Nih Tan Hong, Chang Lim Viet, Ha Dao |
| author_facet | Sing, Tung Teng Suh, Nih Tan Hong, Chang Lim Viet, Ha Dao |
| author_sort | Sing, Tung Teng |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Forty-eight isolates of Pseudo-nitzschia species were established from the Miri coast of Sarawak (Malaysian Borneo) and underwent TEM observation and molecular
characterization. Ten species were found: P. abrensis, P. batesiana, P. fukuyoi, P. kodamae, P. lundholmiae, P. multistriata, P. pungens, P. subfraudulenta, as well as two additional new morphotypes, herein designated as P. bipertita sp. nov. and P. limii sp. nov. This is the first
report of P. abrensis, P. batesiana, P. kodamae, P. fukuyoi and P. lundholmiae in coastal waters of Malaysian Borneo. Pseudo-nitzschia bipertita differs from its congeners by the
number of sectors that divide the poroids, densities of band striae and its cingular band structure. Pseudo-nitzschia limii, a pseudo-cryptic species in the P. seudodelicatissima
complex sensu lato, is distinct by having wider proximal and distal mantles, a higher number of striae and greater poroid height in the striae of the valvocopula. The species were further supported by the phylogenetic reconstructions of the nuclear-encoded large subunit ribosomal gene and the second internal transcribed spacer. Phylogenetically, P. bipertita clustered with its sister taxa (P. subpacifica+P. heimii); P. limii appears as a sister taxon to P. kodamae and
P. hasleana in the ITS2 tree. Pairwise comparison of ITS2 transcripts with its closest relatives revealed the presence of both hemi- and compensatory base changes. Toxicity
analysis showed detectable levels of domoic acid in P. abrensis, P. batesiana, P. lundholmiae and P. ubfraudulenta, but both new species tested below the detection limit. |
| first_indexed | 2025-11-15T06:36:35Z |
| format | Article |
| id | unimas-12657 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:36:35Z |
| publishDate | 2016 |
| publisher | Phycological Society of America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-126572022-06-07T06:40:02Z http://ir.unimas.my/id/eprint/12657/ High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) Sing, Tung Teng Suh, Nih Tan Hong, Chang Lim Viet, Ha Dao Q Science (General) Forty-eight isolates of Pseudo-nitzschia species were established from the Miri coast of Sarawak (Malaysian Borneo) and underwent TEM observation and molecular characterization. Ten species were found: P. abrensis, P. batesiana, P. fukuyoi, P. kodamae, P. lundholmiae, P. multistriata, P. pungens, P. subfraudulenta, as well as two additional new morphotypes, herein designated as P. bipertita sp. nov. and P. limii sp. nov. This is the first report of P. abrensis, P. batesiana, P. kodamae, P. fukuyoi and P. lundholmiae in coastal waters of Malaysian Borneo. Pseudo-nitzschia bipertita differs from its congeners by the number of sectors that divide the poroids, densities of band striae and its cingular band structure. Pseudo-nitzschia limii, a pseudo-cryptic species in the P. seudodelicatissima complex sensu lato, is distinct by having wider proximal and distal mantles, a higher number of striae and greater poroid height in the striae of the valvocopula. The species were further supported by the phylogenetic reconstructions of the nuclear-encoded large subunit ribosomal gene and the second internal transcribed spacer. Phylogenetically, P. bipertita clustered with its sister taxa (P. subpacifica+P. heimii); P. limii appears as a sister taxon to P. kodamae and P. hasleana in the ITS2 tree. Pairwise comparison of ITS2 transcripts with its closest relatives revealed the presence of both hemi- and compensatory base changes. Toxicity analysis showed detectable levels of domoic acid in P. abrensis, P. batesiana, P. lundholmiae and P. ubfraudulenta, but both new species tested below the detection limit. Phycological Society of America 2016 Article PeerReviewed text en http://ir.unimas.my/id/eprint/12657/1/HIGH%20DIVERSITY%20-%20Copy.pdf Sing, Tung Teng and Suh, Nih Tan and Hong, Chang Lim and Viet, Ha Dao (2016) High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae). Journal of Phycology, 52 (3). ISSN 1529-8817 http://onlinelibrary.wiley.com/doi/10.1111/jpy.12448/abstract doi: 10.1111/jpy.12448-15-095 |
| spellingShingle | Q Science (General) Sing, Tung Teng Suh, Nih Tan Hong, Chang Lim Viet, Ha Dao High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title | High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title_full | High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title_fullStr | High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title_full_unstemmed | High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title_short | High diversity of Pseudo-nitzschia along the northern coast of Sarawak (Malaysian Borneo), with descriptions of P. bipertita sp. nov. and P. limii sp. nov. (Bacillariophyceae) |
| title_sort | high diversity of pseudo-nitzschia along the northern coast of sarawak (malaysian borneo), with descriptions of p. bipertita sp. nov. and p. limii sp. nov. (bacillariophyceae) |
| topic | Q Science (General) |
| url | http://ir.unimas.my/id/eprint/12657/ http://ir.unimas.my/id/eprint/12657/ http://ir.unimas.my/id/eprint/12657/ http://ir.unimas.my/id/eprint/12657/1/HIGH%20DIVERSITY%20-%20Copy.pdf |