Morphological and molecular phylogenetic analysis of the high triglyceride-producing marine diatom, Fistulifera solaris sp. nov. (Bacillariophyceae)

Mitsufumi Matsumoto, Shigeki Mayama, Michiko Nemoto, Yorikane Fukuda, Masaki Muto, Tomoko Yoshino, Tadashi Matsunaga, Tsuyoshi Tanaka*

*この研究の対応する著者

研究成果: Article査読

35 被引用数 (Scopus)

抄録

Summary: Fistulifera sp. strain JPCC DA0580, a marine pennate diatom, contains extremely high levels of intracellular triglyceride and has been suggested as a promising source of feedstock for biodiesel fuels. JPCC DA0580 was isolated from a mangrove swamp located in Sumiyo Bay below the mouths of the Sumiyo and Yakugachi Rivers in Amami-Ohshima, Kagoshima, Japan. In this study, the morphology and the 18S rDNA sequence of JPCC DA0580 were compared with those of other Fistulifera strains. JPCC DA0580 possesses morphological characters of the genus Fistulifera, namely lightly silicified frustules, a distinct median costa (raphe sternum), and a wart-like central pore (fistula). Morphometric analysis revealed that JPCC DA0580 differs from other Fistulifera species by the presence of a valve with coarser striation and coarser areolation. On the basis of 18S rDNA phylogeny, JPCC DA0580 formed a well-supported clade with other members of the Fistulifera species complex, although the number of nucleotide substitutions was highest in JPCC DA0580. Our results led us to propose the taxonomic name Fistulifera solaris sp. nov. for JPCC DA0580.

本文言語English
ページ(範囲)257-268
ページ数12
ジャーナルPhycological Research
62
4
DOI
出版ステータスPublished - 2014 10月 1
外部発表はい

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 生理学

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