Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific?
Alaria (Alariaceae, Phaeophyceae) is a common genus of kelps in the northern hemisphere. Fourteen species are currently recognized, of which three, Alaria esculenta (L.) Greville, A. pylaii (Bory de Saint-Vincent) Greville and A. grandifolia J. Agardh, are reported for the cold-temperate North Atlan...
Published in: | European Journal of Phycology |
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Format: | Article in Journal/Newspaper |
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Informa UK Limited
2001
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Online Access: | http://hdl.handle.net/10379/9411 https://doi.org/10.1017/s0967026201002967 |
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ftnuigalway:oai:aran.library.nuigalway.ie/:10379/9411 2023-06-11T04:14:29+02:00 Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? KRAAN, STEFAN RUENESS, JAN GUIRY, MICHAEL D. 2001-02-01 http://hdl.handle.net/10379/9411 https://doi.org/10.1017/s0967026201002967 unknown Informa UK Limited European Journal of Phycology KRAAN, STEFAN; RUENESS, JAN; GUIRY, MICHAEL D. (2001). Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific?. European Journal of Phycology 36 (1), 35-42 0967-0262,1469-4433 http://hdl.handle.net/10379/9411 doi:10.1017/s0967026201002967 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ alaria esculenta alaria grandifolia atlantic crossing experiments hybridization relative growth rates rgr rubisco spacer ribosomal-rna genes temperature responses morphological analysis laminaria phaeophyta nucleotide-sequences rhodophyta ectocarpales Article 2001 ftnuigalway https://doi.org/10.1017/s0967026201002967 2023-05-28T18:04:44Z Alaria (Alariaceae, Phaeophyceae) is a common genus of kelps in the northern hemisphere. Fourteen species are currently recognized, of which three, Alaria esculenta (L.) Greville, A. pylaii (Bory de Saint-Vincent) Greville and A. grandifolia J. Agardh, are reported for the cold-temperate North Atlantic Ocean. Alaria esculenta, the type species described originally from the North Atlantic, exhibits a range of biogeographically correlated morphotypes suggesting the possibility of multiple species, subspecies or hybrids. In Ireland we discovered an A. esculenta population with unusually long stipes resembling the type specimen of A. grandifolia described from Spitsbergen by J. Agardh in 1872. These and other plants of A. esculenta h om Ireland were compared with plants from Spitsbergen fitting the description of A. grandifolia, using sexual hybridization relative growth rate measurements and DNA sequence comparisons. Complete interfertility was observed between the different isolates. Three nucleotide substitutions (0.37%) were found in the rbcL and RuBisCo spacer of A. grandifolia, and two in the partial 18S rRNA gene and ITS1 sequences. The relative growth rate at 10 OC of an Irish self-cross was significantly lower than those of all the other crosses. Comparison of RuBisCo spacer sequences of the Spitsbergen A. grandifolia and six A. esculenta isolates showed that A. grandifolia was identical to A. esculenta from Halifax, Canada. The partial 18S rRNA gene and ITS1 sequence of A. grandifolia was identical to that of A. praelonga from Japan and differed by a single substitution from A. esculenta from Scotland and by two nucleotide substitutions from the isolate from Ireland. The intraspecific differences in A. esculenta, together with the hybridization and morphometric results, suggest that A. grandifolia is to be considered conspecific with A. esculenta, and that A. grandifolia is most probably a large deep-water morphological variant subspecies or ecotype of A. esculenta. Article in Journal/Newspaper North Atlantic Spitsbergen National University of Ireland (NUI), Galway: ARAN Canada Bory ENVELOPE(40.372,40.372,64.489,64.489) Saint-Vincent ENVELOPE(-59.515,-59.515,50.600,50.600) European Journal of Phycology 36 1 35 42 |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
alaria esculenta alaria grandifolia atlantic crossing experiments hybridization relative growth rates rgr rubisco spacer ribosomal-rna genes temperature responses morphological analysis laminaria phaeophyta nucleotide-sequences rhodophyta ectocarpales |
spellingShingle |
alaria esculenta alaria grandifolia atlantic crossing experiments hybridization relative growth rates rgr rubisco spacer ribosomal-rna genes temperature responses morphological analysis laminaria phaeophyta nucleotide-sequences rhodophyta ectocarpales KRAAN, STEFAN RUENESS, JAN GUIRY, MICHAEL D. Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
topic_facet |
alaria esculenta alaria grandifolia atlantic crossing experiments hybridization relative growth rates rgr rubisco spacer ribosomal-rna genes temperature responses morphological analysis laminaria phaeophyta nucleotide-sequences rhodophyta ectocarpales |
description |
Alaria (Alariaceae, Phaeophyceae) is a common genus of kelps in the northern hemisphere. Fourteen species are currently recognized, of which three, Alaria esculenta (L.) Greville, A. pylaii (Bory de Saint-Vincent) Greville and A. grandifolia J. Agardh, are reported for the cold-temperate North Atlantic Ocean. Alaria esculenta, the type species described originally from the North Atlantic, exhibits a range of biogeographically correlated morphotypes suggesting the possibility of multiple species, subspecies or hybrids. In Ireland we discovered an A. esculenta population with unusually long stipes resembling the type specimen of A. grandifolia described from Spitsbergen by J. Agardh in 1872. These and other plants of A. esculenta h om Ireland were compared with plants from Spitsbergen fitting the description of A. grandifolia, using sexual hybridization relative growth rate measurements and DNA sequence comparisons. Complete interfertility was observed between the different isolates. Three nucleotide substitutions (0.37%) were found in the rbcL and RuBisCo spacer of A. grandifolia, and two in the partial 18S rRNA gene and ITS1 sequences. The relative growth rate at 10 OC of an Irish self-cross was significantly lower than those of all the other crosses. Comparison of RuBisCo spacer sequences of the Spitsbergen A. grandifolia and six A. esculenta isolates showed that A. grandifolia was identical to A. esculenta from Halifax, Canada. The partial 18S rRNA gene and ITS1 sequence of A. grandifolia was identical to that of A. praelonga from Japan and differed by a single substitution from A. esculenta from Scotland and by two nucleotide substitutions from the isolate from Ireland. The intraspecific differences in A. esculenta, together with the hybridization and morphometric results, suggest that A. grandifolia is to be considered conspecific with A. esculenta, and that A. grandifolia is most probably a large deep-water morphological variant subspecies or ecotype of A. esculenta. |
format |
Article in Journal/Newspaper |
author |
KRAAN, STEFAN RUENESS, JAN GUIRY, MICHAEL D. |
author_facet |
KRAAN, STEFAN RUENESS, JAN GUIRY, MICHAEL D. |
author_sort |
KRAAN, STEFAN |
title |
Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
title_short |
Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
title_full |
Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
title_fullStr |
Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
title_full_unstemmed |
Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
title_sort |
are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific? |
publisher |
Informa UK Limited |
publishDate |
2001 |
url |
http://hdl.handle.net/10379/9411 https://doi.org/10.1017/s0967026201002967 |
long_lat |
ENVELOPE(40.372,40.372,64.489,64.489) ENVELOPE(-59.515,-59.515,50.600,50.600) |
geographic |
Canada Bory Saint-Vincent |
geographic_facet |
Canada Bory Saint-Vincent |
genre |
North Atlantic Spitsbergen |
genre_facet |
North Atlantic Spitsbergen |
op_relation |
European Journal of Phycology KRAAN, STEFAN; RUENESS, JAN; GUIRY, MICHAEL D. (2001). Are north atlantic alaria esculenta and a. grandifolia (alariaceae, phaeophyceae) conspecific?. European Journal of Phycology 36 (1), 35-42 0967-0262,1469-4433 http://hdl.handle.net/10379/9411 doi:10.1017/s0967026201002967 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.1017/s0967026201002967 |
container_title |
European Journal of Phycology |
container_volume |
36 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
42 |
_version_ |
1768392507032338432 |