NDLI: Systematics of marine brown alga Sargassum from Thailand: A preliminary study based on morphological data and nuclear ribosomal internal transcribed spacer 2 (ITS2) sequences

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Proceedings of 9$^{th}$ WESTPAC International Scientific Symposium-A Healthy Ocean for Prosperity in the Western Pacific: Scientific Challenges and Possible Solutions, Nha Trang, Vietnam, 22–25 April 2014

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Systematics of marine brown alga Sargassum from Thailand: A preliminary study based on morphological data and nuclear ribosomal internal transcribed spacer 2 (ITS2) sequences

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Systematics of marine brown alga Sargassum from Thailand: A preliminary study based on morphological data and nuclear ribosomal internal transcribed spacer 2 (ITS2) sequences

Content Provider	Springer Nature Link
Author	Kantachumpoo, Attachai Uwai, Shinya Noiraksar, Thidarat Komatsu, Teruhisa
Copyright Year	2015
Abstract	The marine brown algal genus Sargassum has been investigated extensively based on genetic information. In this report, we performed the first comparative study of morphological and molecular data among common species of Sargassum found in Thailand and explored the phylogenetic diversity within the genus. Our results revealed an incongruent pattern for species classification in Thai Sargassum. Morphologically, our Sargassum specimens were distinguishable and represented 8 species, namely, S. aquifolium (Turner) C.Agardh, Sargassum baccularia (Mertens) C. Agardh, S. cinereum J. Agardh, S. ilicifolium (Turner) C.Agardh, S. oligocystum Montagne, S. plagiophyllum C. Agardh, S. polycystum C. Agardh and S. swartzii (Turuner) C. Agardh. In contrast, using three different methods, phylogenetic analysis of nuclear ribosomal internal transcribed spacer 2 (ITS2) revealed six distinct clades, including S. baccularia/S. oligosyntum clade, S. aquifolium/S. swartzii clade, S. cinereum clade, S. aquifolium/S. ilicifolium clade, S. polycystum clade, and S. plagiophyllum clade, which was suggestive of a phenotypic plasticity species complex. Our molecular data also confirmed the paraphyletic relationship in the section Binderianae and suggested that this section requires reassessment. Overall, further studies are required to increase our understanding of the taxonomy, phylogenetic relationships and species boundaries among Sargassum species in Thailand.
Starting Page	251
Ending Page	262
Page Count	12
File Format	PDF
ISSN	17385261
Journal	Ocean Science Journal
Volume Number	50
Issue Number	2
e-ISSN	20057172
Language	English
Publisher	Korea Ocean Research and Development Institute and The Korean Society of Oceanography
Publisher Date	2015-07-09
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sargassum Thailand ITS2 phylogeny taxonomy Oceanography Marine & Freshwater Sciences Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Oceanography

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