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ALGAE > Volume 27(3); 2012 > Article
ALGAE 2012;27(3): 175-187. doi: https://doi.org/10.4490/algae.2012.27.3.175
Taxonomic notes on five species of Gracilariaceae from Hainan, China
Mi Yeon Yang1, Jun-De Dong2 and Myung Sook Kim1,*

1Department of Biology and Research Institute for Basic Sciences, Jeju National University, Jeju 690-756, Korea
2Tropical Marine Biological Research Station in Hainan, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China
*Corresponding Author  Email: myungskim@jejunu.ac.kr
Hainan is the second largest and southernmost island of China, and it harbors many species of the family Gracilariaceae. In this study, we conducted molecular and morphological analyses of gracilarian specimens collected from Hainan Island, to clarify their taxonomic identity and phylogenetic relationships. Five species of Gracilariaceae in Hainan were determined through maximum likelihood and Bayesian analysis of rbcL sequence data. Based on the phylogenetic trees and morphology, Hainan specimens were identified as three species of Gracilaria, one species of Gracilariopsis, and one species of Hydropuntia, namely, G. salicornia, G. tenuistipitata, Gracilaria sp., Gp. bailiniae and H. edulis. This is the first report of the molecular phylogeny of Gracilariaceae on Hainan Island, and it helps to clarify the taxonomy and distribution of gracilarian species in the Asia-Pacific region.
Key words: Gracilariaceae; Hainan; phylogeny; rbcL; Rhodophyta; taxonomy

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