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

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 th...

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Veröffentlicht in:Phycological research 2014-10, Vol.62 (4), p.257-268
Hauptverfasser: Matsumoto, Mitsufumi, Mayama, Shigeki, Nemoto, Michiko, Fukuda, Yorikane, Muto, Masaki, Yoshino, Tomoko, Matsunaga, Tadashi, Tanaka, Tsuyoshi
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container_end_page 268
container_issue 4
container_start_page 257
container_title Phycological research
container_volume 62
creator Matsumoto, Mitsufumi
Mayama, Shigeki
Nemoto, Michiko
Fukuda, Yorikane
Muto, Masaki
Yoshino, Tomoko
Matsunaga, Tadashi
Tanaka, Tsuyoshi
description 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.
doi_str_mv 10.1111/pre.12066
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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. 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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. 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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.</abstract><cop>Richmond</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/pre.12066</doi><tpages>12</tpages></addata></record>
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subjects 18S rDNA
JPCC DA0580
marine diatom
Morphology
morphometric analyses
title Morphological and molecular phylogenetic analysis of the high triglyceride-producing marine diatom, Fistulifera solaris sp. nov. (Bacillariophyceae)
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