Detection and Characterization of RNA Viruses in Red Macroalgae (Bangiaceae) and Their Food Product (Nori Sheets).

Persistent RNA viruses, which have been suggested to form symbiotic relationships with their hosts, have been reported to occur in eukaryotes, such as plants, fungi, and algae. Based on empirical findings, these viruses may also be present in commercially cultivated macroalgae. Accordingly, the present study aimed to screen red macroalgae (family Bangiaceae conchocelis and Neopyropia yezoensis thallus) and processed nori sheets (N.

Microbial community analysis in the gills of abalones suggested possible dominance of epsilonproteobacterium in .

Gills are important organs for aquatic invertebrates because they harbor chemosynthetic bacteria, which fix inorganic carbon and/or nitrogen and provide their hosts with organic compounds. Nevertheless, in contrast to the intensive researches related to the gut microbiota, much is still needed to further understand the microbiota within the gills of invertebrates. Using abalones as a model, we investigated the community structure of microbes associated with the gills of these invertebrates using next-generation sequencing.

Diversity, enumeration, and isolation of Arcobacter spp. in the giant abalone, Haliotis gigantea.

Arcobacter have been frequently detected in and isolated from bivalves, but there is very little information on the genus Arcobacter in the abalone, an important fishery resource. This study aimed to investigate the genetic diversity and abundance of bacteria from the genus Arcobacter in the Japanese giant abalone, Haliotis gigantea, using molecular methods such as Arcobacter-specific clone libraries and fluorescence in situ hybridization (FISH). Furthermore, we attempted to isolate the Arcobacter species detected.

Arcobacter haliotis sp. nov., isolated from abalone species Haliotis gigantea.

A Gram-negative, aerobic, polar-flagellated and rod-shaped, sometimes slightly curved bacterium, designated MA5T, was isolated from the gut of an abalone of the species Haliotis gigantea collected in Japan. Phylogenetic analyses based on 16S rRNA, gyrB, hsp60 and rpoB gene sequences placed strain MA5T in the genus Arcobacter in an independent phylogenetic line. Comparison of the 16S rRNA gene sequence of this strain with those of the type strains of the established Arcobacter species revealed A.

Genome Sequence of sp. Strain LA11, Isolated from the Abalone .

sp. strain LA11 was isolated from the gut of the abalone Here, we present the annotation and analysis of the draft genome of this strain, which is involved in nitrogen metabolism.

Genome Sequence of Formosa haliotis Strain MA1, a Brown Alga-Degrading Bacterium Isolated from the Gut of Abalone Haliotis gigantea.

Formosa haliotis is a brown alga-degrading bacterium isolated from the gut of abalone Haliotis gigantea Here, we report the draft genome sequence of this bacterium and pointed out possible important features related to alginate degradation.

Formosa haliotis sp. nov., a brown-alga-degrading bacterium isolated from the gut of the abalone Haliotis gigantea.

Four brown-alga-degrading, Gram-stain-negative, aerobic, non-flagellated, gliding and rod-shaped bacteria, designated LMG 28520T, LMG 28521, LMG 28522 and LMG 28523, were isolated from the gut of the abalone Haliotis gigantea obtained in Japan. The four isolates had identical random amplified polymorphic DNA patterns and grew optimally at 25 °C, at pH 6.0-9.

Flow-injection spectrophotometry of vanadium by catalysis of the bromate oxidation of N,N'-bis(2-hydroxyl-3-sulfopropyl)-tolidine.

A highly sensitive flow-injection method is proposed for the catalytic determination of vanadium(V) at sub-nanogram per milliliter levels using a new indicator reaction. The method is based on the catalytic effect of vanadium(V) on the bromate oxidation of N,N'-bis(2-hydroxyl-3-sulfopropyl)-tolidine. 1,2-Dihydroxybenzene-3,5-disulfonate was used as an activator in the vanadium(V)-catalyzed reaction and significantly enhanced the sensitivity of the method.