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Molecular analysis of Sargassum from the northern China seas

CHAOHUA HUANG, ZHONGMIN SUN, DAHAI GAO, JIANTING YAO, ZIMIN HU, YUHANG LI, YONGQIANG WANG, KUIDONG XU, WANDONG CHEN

Abstract


The species-level taxonomy of the marine brown algal genus Sargassum is problematic. To resolve some of these systematic issues in the northern China seas, a molecular analysis of Sargassum species was carried out using ITS-2, cox3, and rbcL DNA sequences. Phylogenetic analyses confirmed eight species, including: S. confusum, S. fusiforme, S. hemiphyllum var. chinense, S. horneri, S. muticum, S. siliquastrum, S. thunbergii, and S. vachellianum. The previously described S. shandongense and S. qingdaoense, endemic to the Shandong Peninsula, are shown to be synonymous with S. vachellianum. Seven species previously described from the East China Sea were not observed, and require further investigation.


Keywords


Sargassum, diversity, molecular assessment, northern China seas, Algae



DOI: http://dx.doi.org/10.11646/phytotaxa.319.1.3

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ISSN 1179-3155 (print); ISSN 1179-3163 (online)

Published by Magnolia Press, Auckland, New Zealand