Molecular systematic reassessment of Sargassum (Fucales, Phaeophyceae) in Korea using four gene regions

被引：34

作者：

Cho, Sung Mi ^{[1
]}

Lee, Sang Mook ^{[2
]}

Ko, Yong Deok ^{[3
]}

Mattio, Lydiane ^{[4
,5
]}

Boo, Sung Min ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Biol, Taejon 305764, South Korea

[2] Catholic Univ Korea, Coll Med, Dept Anesthesiol & Pain Med, Seoul 137701, South Korea

[3] Kunsan Natl Univ, Dept Marine Life Sci, Kunsan 573701, South Korea

[4] Univ Cape Town, Dept Bot, ZA-7701 Rondebosch, South Africa

[5] Univ Cape Town, Marine Res Inst, ZA-7701 Rondebosch, South Africa

来源：

BOTANICA MARINA | 2012年 / 55卷 / 05期

关键词：

brown algae; Fucales; molecular markers; phylogeny; Sargassum;

D O I：

10.1515/bot-2012-0109

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Sargassum is an ecologically and economically important brown alga in East Asia. A total of 28 species are listed in the available literature for South Korea. To identify the species and evaluate the phylogenetic relationships of Korean Sargassum, we analyzed ITS2, rbc L, psaA, and cox 3 sequences from a subset of 50 specimens assigned to 22 Sargassum species; sequences of Korean-collected Myagropsis myagroides and Coccophora langsdorfii were also included. We reconstructed the phylogeny of Sargassum using the concatenated dataset. The Korean Sargassum species fell into two subgenera: 19 species were assigned to S. subgen. Bactrophycus and three species to S. subgen. Sargassum. The species in the S. subgen. Bactrophycus represented the sections Halochloa, Hizikia, Spongocarpus, and Teretia, whereas those of S. subgen. Sargassum represented the sections Binderiana and Sargassum. All Korean Sargassum species identified in the present study are part of the East Asiatic complex of species co-occurring in Japan and surrounding areas. Our four-gene dataset was highly resolved at the sectional level and confirmed recently proposed revisions within the genus. The present study is the first comprehensive phylogenetic analysis of Sargassum using four molecular markers.

引用

页码：473 / 484

页数：12

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