Taxonomic Revision of Hook-Forming Acrosorium (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data

Cosmopolitan Acrosorium species with hook-forming thalli have been merged under the name of Acrosorium ciliolatum (Harvey) Kylin through a long and complicated nomenclatural history. We examined the specimens of ‘A. ciliolatum’ and related tax...

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Autores principales:	Jeong Chan Kang, Showe-Mei Lin, Kathy Ann Miller, Myung Sook Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Acrosorium</i> Delesseriaceae hook-forming thalli molecular phylogeny morphology taxonomy Botany QK1-989
Acceso en línea:	https://doaj.org/article/adbdb0aba1a34c29bf53323924f8d95f
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spelling	oai:doaj.org-article:adbdb0aba1a34c29bf53323924f8d95f2021-11-25T18:44:31ZTaxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data10.3390/plants101122692223-7747https://doaj.org/article/adbdb0aba1a34c29bf53323924f8d95f2021-10-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2269https://doaj.org/toc/2223-7747Cosmopolitan <i>Acrosorium</i> species with hook-forming thalli have been merged under the name of <i>Acrosorium ciliolatum</i> (Harvey) Kylin through a long and complicated nomenclatural history. We examined the specimens of ‘<i>A. ciliolatum’</i> and related taxa from the northwestern (NW) Pacific, the UK, southern Spain, Australia, New Zealand, and Chile, using morphological and molecular analyses. We confirmed that these specimens are separated into four clades based on <i>rbc</i>L phylogeny, and the absence or presence of terminal hook-like structures represent intraspecific variation. Our results indicated that <i>Acrosorium flabellatum</i> Yamada, <i>Cryptopleura hayamensis</i> Yamada, <i>Cryptopleura membranacea</i> Yamada and the entities known as ‘<i>A. ciliolatum’</i> in the NW Pacific are conspecific; the name <i>A. flabellatum</i> is the oldest and has priority. This taxon exhibits extreme variations in external blade morphology. We also confirmed that the position of the tetrasporangial sori is a valuable diagnostic characteristic for distinguishing <i>A. flabellatum</i> in the NW Pacific. We also discussed the need for further study of European and southern hemisphere specimens from type localities, as well as the ambiguous position of California specimens.Jeong Chan KangShowe-Mei LinKathy Ann MillerMyung Sook KimMDPI AGarticle<i>Acrosorium</i>Delesseriaceaehook-forming thallimolecular phylogenymorphologytaxonomyBotanyQK1-989ENPlants, Vol 10, Iss 2269, p 2269 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Acrosorium</i> Delesseriaceae hook-forming thalli molecular phylogeny morphology taxonomy Botany QK1-989
spellingShingle	<i>Acrosorium</i> Delesseriaceae hook-forming thalli molecular phylogeny morphology taxonomy Botany QK1-989 Jeong Chan Kang Showe-Mei Lin Kathy Ann Miller Myung Sook Kim Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
description	Cosmopolitan <i>Acrosorium</i> species with hook-forming thalli have been merged under the name of <i>Acrosorium ciliolatum</i> (Harvey) Kylin through a long and complicated nomenclatural history. We examined the specimens of ‘<i>A. ciliolatum’</i> and related taxa from the northwestern (NW) Pacific, the UK, southern Spain, Australia, New Zealand, and Chile, using morphological and molecular analyses. We confirmed that these specimens are separated into four clades based on <i>rbc</i>L phylogeny, and the absence or presence of terminal hook-like structures represent intraspecific variation. Our results indicated that <i>Acrosorium flabellatum</i> Yamada, <i>Cryptopleura hayamensis</i> Yamada, <i>Cryptopleura membranacea</i> Yamada and the entities known as ‘<i>A. ciliolatum’</i> in the NW Pacific are conspecific; the name <i>A. flabellatum</i> is the oldest and has priority. This taxon exhibits extreme variations in external blade morphology. We also confirmed that the position of the tetrasporangial sori is a valuable diagnostic characteristic for distinguishing <i>A. flabellatum</i> in the NW Pacific. We also discussed the need for further study of European and southern hemisphere specimens from type localities, as well as the ambiguous position of California specimens.
format	article
author	Jeong Chan Kang Showe-Mei Lin Kathy Ann Miller Myung Sook Kim
author_facet	Jeong Chan Kang Showe-Mei Lin Kathy Ann Miller Myung Sook Kim
author_sort	Jeong Chan Kang
title	Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
title_short	Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
title_full	Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
title_fullStr	Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
title_full_unstemmed	Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data
title_sort	taxonomic revision of hook-forming <i>acrosorium</i> (delesseriaceae, rhodophyta) from the northwestern pacific based on morphology and molecular data
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/adbdb0aba1a34c29bf53323924f8d95f
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Taxonomic Revision of Hook-Forming <i>Acrosorium</i> (Delesseriaceae, Rhodophyta) from the Northwestern Pacific Based on Morphology and Molecular Data

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