| coexistence of multiple proteobacterial endosymbionts in the gills of the wood-boring bivalve lyrodus pedicellatus (bivalvia: teredinidae). | wood-boring bivalves of the family teredinidae (commonly called shipworms) are known to harbor dense populations of gram-negative bacteria within specialized cells (bacteriocytes) in their gills. these symbionts are thought to provide enzymes, e.g., cellulase and dinitrogenase, which assist the host in utilizing wood as a primary food source. a cellulolytic, dinitrogen-fixing bacterium, teredinibacter turnerae, has been isolated from the gill tissues of numerous teredinid bivalves and has been p ... | 2002 | 12450854 |
| teredinibacter turnerae gen. nov., sp. nov., a dinitrogen-fixing, cellulolytic, endosymbiotic gamma-proteobacterium isolated from the gills of wood-boring molluscs (bivalvia: teredinidae). | a cellulolytic, dinitrogen-fixing bacterium isolated from the gill tissue of a wood-boring mollusc (shipworm) lyrodus pedicellatus of the bivalve family teredinidae and 58 additional strains with similar properties, isolated from gills of 24 bivalve species representing 9 of 14 genera of teredinidae, are described. the cells are gram-negative, rigid, rods (0.4-0.6 x 3-6 microm) that bear a single polar flagellum. all isolates are capable of chemoheterotrophic growth in a simple mineral medium su ... | 2002 | 12508896 |
| extensive variation in intracellular symbiont community composition among members of a single population of the wood-boring bivalve lyrodus pedicellatus (bivalvia: teredinidae). | shipworms (wood-boring bivalves of the family teredinidae) harbor in their gills intracellular bacterial symbionts thought to produce enzymes that enable the host to consume cellulose as its primary carbon source. recently, it was demonstrated that multiple genetically distinct symbiont populations coexist within one shipworm species, lyrodus pedicellatus. here we explore the extent to which symbiont communities vary among individuals of this species by quantitatively examining the diversity, ab ... | 2006 | 16391072 |
| celab, a multifunctional cellulase encoded by teredinibacter turnerae t7902t, a culturable symbiont isolated from the wood-boring marine bivalve lyrodus pedicellatus. | we characterized a multifunctional cellulase (celab) encoded by the endosymbiont teredinibacter turnerae t7902(t). celab contains two catalytic and two carbohydrate-binding domains, each separated by polyserine linker regions. celab binds cellulose and chitin, degrades multiple complex polysaccharides, and displays two catalytic activities, cellobiohydrolase (ec 3.2.1.91) and beta-1,4(3) endoglucanase (ec 3.2.1.4). | 2007 | 17933945 |
| microbial distribution and abundance in the digestive system of five shipworm species (bivalvia: teredinidae). | marine bivalves of the family teredinidae (shipworms) are voracious consumers of wood in marine environments. in several shipworm species, dense communities of intracellular bacterial endosymbionts have been observed within specialized cells (bacteriocytes) of the gills (ctenidia). these bacteria are proposed to contribute to digestion of wood by the host. while the microbes of shipworm gills have been studied extensively in several species, the abundance and distribution of microbes in the dige ... | 2012 | 23028923 |