Complete genome sequences of two new strains of the shipworm endosymbiont, .

We present the complete genome sequences of two strains of , SR01903 and SR02026, shipworm endosymbionts isolated from the gills of and , respectively, and derived from Oxford Nanopore sequencing. These sequences will aid in the comparative genomics of shipworm endosymbionts and understanding of host-symbiont selection.

Closing the genome of T7902 by long-read nanopore sequencing.

We present the complete closed circular genome sequence derived from Oxford Nanopore sequencing of the shipworm endosymbiont T7902 (DSM 15152, ATCC 39867), originally isolated from the shipworm (1). This sequence will aid in the comparative genomics of shipworm endosymbionts and the understanding of host-symbiont evolution.

Membrane vesicles can contribute to cellulose degradation by , a cultivable intracellular endosymbiont of shipworms.

is a cultivable cellulolytic Gammaproteobacterium (Cellvibrionaceae) that commonly occurs as an intracellular endosymbiont in the gills of wood-eating bivalves of the family Teredinidae (shipworms). The genome of encodes a broad range of enzymes that deconstruct cellulose, hemicellulose, and pectin and contribute to wood (lignocellulose) digestion in the shipworm gut. However, the mechanisms by which secretes lignocellulolytic enzymes are incompletely understood.

Boronated tartrolon antibiotic produced by symbiotic cellulose-degrading bacteria in shipworm gills.

Shipworms are marine wood-boring bivalve mollusks (family Teredinidae) that harbor a community of closely related Gammaproteobacteria as intracellular endosymbionts in their gills. These symbionts have been proposed to assist the shipworm host in cellulose digestion and have been shown to play a role in nitrogen fixation. The genome of one strain of Teredinibacter turnerae, the first shipworm symbiont to be cultivated, was sequenced, revealing potential as a rich source of polyketides and nonribosomal peptides.

Diversity and dynamics of bacterial communities in early life stages of the Caribbean coral Porites astreoides.

In this study, we examine microbial communities of early developmental stages of the coral Porites astreoides by sequence analysis of cloned 16S rRNA genes, terminal restriction fragment length polymorphism (TRFLP), and fluorescence in situ hybridization (FISH) imaging. Bacteria are associated with the ectoderm layer in newly released planula larvae, in 4-day-old planulae, and on the newly forming mesenteries surrounding developing septa in juvenile polyps after settlement. Roseobacter clade-associated (RCA) bacteria and Marinobacter sp.