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Reduced Genome of the Thioautotrophic Intracellular Symbiont in a Deep-Sea Clam, Calyptogena okutanii
The complete genome sequence of the symbiont of Calyptogena okutanii is presented, which is the smallest reported genome in autotrophic bacteria and encodes 939 protein-coding genes, including those for thioautotrophy and for the syntheses of almost all amino acids and various cofactors. Expand
Genetic Diversity of Microbial Eukaryotes in Anoxic Sediment of the Saline Meromictic Lake Namako-ike (Japan): On the Detection of Anaerobic or Anoxic-tolerant Lineages of Eukaryotes.
In the ongoing challenge to detect anaerobic or anoxic-tolerant lineages of eukaryotes, DNA is directly extracted from the anoxic sediment of a saline meromictic lake, genetic libraries of PCR-amplified SSU rDNA are constructed, and phylogenetic analyses with the cloned SSu rDNA sequences are performed. Expand
Diversity of microbial eukaryotes in sediment at a deep-sea methane cold seep: surveys of ribosomal DNA libraries from raw sediment samples and two enrichment cultures
Since these phylotypes were not identified in the raw sediment samples, the approach incorporating a cultivation step successfully found at least a fraction of the “hidden” microeukaryotic diversity in the environment examined. Expand
Molecular Evidence Suggesting Species in the Zoanthid Genera Palythoa and Protopalythoa (Anthozoa: Hexacorallia) Are Congeneric
The phylogenetic trees for both COI and 16S rDNA from Palythoa and Protopalythoa show four monophyletic groups, which strongly indicate that these samples represent a minimum of two and possibly up to four species, and that the genus Protopallythoa is erroneous nomenclature. Expand
Genetic diversity of microbial eukaryotes in anoxic sediment around fumaroles on a submarine caldera floor based on the small-subunit rDNA phylogeny
It was shown that most sequences have affiliations with known major lineages of eukaryotes (Cercozoa, Alveolata, stramenopiles and Opisthokonta) and other sequences did not seem to be related to any described eUKaryotic lineages suggesting the existence of novel eukARYotes at a high-taxonomic level in the sediment. Expand
Molecular evidence for plastid robbery (Kleptoplastidy) in Dinophysis, a dinoflagellate causing diarrhetic shellfish poisoning.
The present findings suggest that these Dinophysis species engulfed and temporarily retained plastids from a cryptophyte, and may have originally possessed peridinin-type plastid and lost it subsequently, and adopted a new plASTid from a Cryptophyte. Expand
A phylogenetic mosaic plastid proteome and unusual plastid-targeting signals in the green-colored dinoflagellate Lepidodinium chlorophorum
This study analyzes the phylogenetic origin and N-terminal extensions of plastid-targeted proteins from Lepidodinium chlorophorum, a member of the only dinoflagellate genus that harbors a green secondary plastsid rather than the red algal-derived, peridinin-containing plastids usually found in photosynthetic dinof lagellates. Expand
A novel type of kleptoplastidy in Dinophysis (Dinophyceae): presence of haptophyte-type plastid in Dinophysis mitra.
Red-fluorescent, non-phycobilin-containing plastids were found in the heterotrophic dinoflagellate, Dinophysis mitra and it was deduced that Dinophile mitra takes up haptophytes myzocytotically and selectively retains the plastid with surrounding plastidal membranes, whereas other haptophical cell components are degraded. Expand
Morphological and Molecular Revision of Zoanthus (Anthozoa: Hexacorallia) from Southwestern Japan, with Descriptions of Two New Species
The molecular genetic results clearly show the presence of three monophyletic Zoanthus species groups with varying levels of morphological plasticity, including the new species Z. gigantus n. Expand
Latitudinal and intracolony ITS‐rDNA sequence variation in the symbiotic dinoflagellate genus Symbiodinium (Dinophyceae) in Zoanthus sansibaricus (Anthozoa: Hexacorallia)
We sequenced the internal transcribed spacer of ribosomal DNA (ITS‐rDNA) of Symbiodinium spp. (Freudenthal) from conspecific Zoanthus sansibaricus (Carlgren) colonies along a latitudinal gradient inExpand