Bibliographic Detail
Kantachumpoo, A., Uwai, S., Noiraksar, T. & Komatsu, T., 2015
Reference:
Kantachumpoo, A., Uwai, S., Noiraksar, T. & Komatsu, T. (2015). Systematics of marine brown alga Sargassum from Thailand: a preliminary study based on morphological data and nuclear ribosomal internal transcribed spacer 2 (ITS2) sequences. Ocean Science Journal 50(2): 251-262.
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
DOI:
http://dx.doi.org/10.1007/s12601-015-0022-4