A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters
Thalassiosira constricta was first described from Tromsø in the Norwegian Sea. The species was placed in the large and morphologically diverse genus Thalassiosira based on the presence of classical features of that genus, including the formation of chains held together by β-chitin threads extruded f...
Published in: | Phytotaxa |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Phytotaxa
2016
|
Subjects: | |
Online Access: | http://www.mapress.com/j/pt/article/view/phytotaxa.245.1.1 https://doi.org/10.11646/phytotaxa.245.1.1 |
id |
ftmagnoliapress:oai:ojs.mapress.com:article/14839 |
---|---|
record_format |
openpolar |
spelling |
ftmagnoliapress:oai:ojs.mapress.com:article/14839 2023-05-15T17:47:07+02:00 A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters Park, Joon Sang Alverson, Andrew J Lee, Jin Hwan 2016-01-22 application/pdf http://www.mapress.com/j/pt/article/view/phytotaxa.245.1.1 https://doi.org/10.11646/phytotaxa.245.1.1 eng eng Phytotaxa http://www.mapress.com/j/pt/article/view/phytotaxa.245.1.1/3885 Copyright (c) 2016 Phytotaxa Phytotaxa; Vol 245, No 1: 22 January 2016; 1–16 1179-3163 1179-3155 10.11646/phytotaxa.245.1 Bacterosira colonial diatoms Thalassiosira constricta Thalassiosirales Algae info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftmagnoliapress https://doi.org/10.11646/phytotaxa.245.1.1 2018-08-24T16:35:24Z Thalassiosira constricta was first described from Tromsø in the Norwegian Sea. The species was placed in the large and morphologically diverse genus Thalassiosira based on the presence of classical features of that genus, including the formation of chains held together by β-chitin threads extruded from central fultoportulae. We recently discovered T. constricta in Korean coastal waters near Sinsi Island. Detailed morphological analyses revealed the following cell wall features: i) cells arranged in chains, with adjacent cells directly abutting one another or distinctly separated and linked by β-chitin threads extruded from a central cluster of 0–14 fultoportulae, ii) delicate, biseriate poroid areolae along radial ribs on the valve face and coarse loculate areolae on the valve mantle, iii) a cingulum structure consisting of finely perforated valvocoupla and copula and scratched pleurae, iv) distinct antiligula on the valve, v) a single ring of marginal fultoportulae, vi) one rimoportula located within the ring of marginal fultoportulae, vii) fultoportulae with internal extensions that lack opercula, and viii) fultoportulate with four fully exposed satellite pores, each in a depression and surrounded by a defined cowling. Phylogenetic analysis of nuclear and plastid markers revealed a sister relationship with Bacterosira bathyomphala. Based on these findings, we transfer T. constricta to Bacterosira as Bacterosira constricta comb. nov. and offer an emended the description of the genus Bacterosira, which appears to be one of only a few monophyletic marine genera in Thalassiosirales. Article in Journal/Newspaper Norwegian Sea Tromsø Magnolia press Norwegian Sea Tromsø Phytotaxa 245 1 1 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Bacterosira colonial diatoms Thalassiosira constricta Thalassiosirales Algae |
spellingShingle |
Bacterosira colonial diatoms Thalassiosira constricta Thalassiosirales Algae Park, Joon Sang Alverson, Andrew J Lee, Jin Hwan A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
topic_facet |
Bacterosira colonial diatoms Thalassiosira constricta Thalassiosirales Algae |
description |
Thalassiosira constricta was first described from Tromsø in the Norwegian Sea. The species was placed in the large and morphologically diverse genus Thalassiosira based on the presence of classical features of that genus, including the formation of chains held together by β-chitin threads extruded from central fultoportulae. We recently discovered T. constricta in Korean coastal waters near Sinsi Island. Detailed morphological analyses revealed the following cell wall features: i) cells arranged in chains, with adjacent cells directly abutting one another or distinctly separated and linked by β-chitin threads extruded from a central cluster of 0–14 fultoportulae, ii) delicate, biseriate poroid areolae along radial ribs on the valve face and coarse loculate areolae on the valve mantle, iii) a cingulum structure consisting of finely perforated valvocoupla and copula and scratched pleurae, iv) distinct antiligula on the valve, v) a single ring of marginal fultoportulae, vi) one rimoportula located within the ring of marginal fultoportulae, vii) fultoportulae with internal extensions that lack opercula, and viii) fultoportulate with four fully exposed satellite pores, each in a depression and surrounded by a defined cowling. Phylogenetic analysis of nuclear and plastid markers revealed a sister relationship with Bacterosira bathyomphala. Based on these findings, we transfer T. constricta to Bacterosira as Bacterosira constricta comb. nov. and offer an emended the description of the genus Bacterosira, which appears to be one of only a few monophyletic marine genera in Thalassiosirales. |
format |
Article in Journal/Newspaper |
author |
Park, Joon Sang Alverson, Andrew J Lee, Jin Hwan |
author_facet |
Park, Joon Sang Alverson, Andrew J Lee, Jin Hwan |
author_sort |
Park, Joon Sang |
title |
A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
title_short |
A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
title_full |
A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
title_fullStr |
A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
title_full_unstemmed |
A phylogenetic re-definition of the diatom genus Bacterosira (Thalassiosirales, Bacillariophyta), with the transfer of Thalassiosira constricta based on morphological and molecular characters |
title_sort |
phylogenetic re-definition of the diatom genus bacterosira (thalassiosirales, bacillariophyta), with the transfer of thalassiosira constricta based on morphological and molecular characters |
publisher |
Phytotaxa |
publishDate |
2016 |
url |
http://www.mapress.com/j/pt/article/view/phytotaxa.245.1.1 https://doi.org/10.11646/phytotaxa.245.1.1 |
geographic |
Norwegian Sea Tromsø |
geographic_facet |
Norwegian Sea Tromsø |
genre |
Norwegian Sea Tromsø |
genre_facet |
Norwegian Sea Tromsø |
op_source |
Phytotaxa; Vol 245, No 1: 22 January 2016; 1–16 1179-3163 1179-3155 10.11646/phytotaxa.245.1 |
op_relation |
http://www.mapress.com/j/pt/article/view/phytotaxa.245.1.1/3885 |
op_rights |
Copyright (c) 2016 Phytotaxa |
op_doi |
https://doi.org/10.11646/phytotaxa.245.1.1 |
container_title |
Phytotaxa |
container_volume |
245 |
container_issue |
1 |
container_start_page |
1 |
_version_ |
1766151434035789824 |