Teredinibacter turnerae gen. nov., sp. nov., a dinitrogen-fixing, cellulolytic, endosymbiotic c-proteobacterium isolated from the gills of wood-boring molluscs (Bivalvia: Teredinidae)

View/ Open
Date
2002Author
Distel, Daniel L.
Concept link
Morrill, Wendy
Concept link
MacLaren-Toussaint, Noelle
Concept link
Franks, Diana G.
Concept link
Waterbury, John B.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/110As published
https://doi.org/10.1099/ijs.0.02184-0DOI
10.1099/ijs.0.02184-0Keyword
Teredinidae; Bivalvia; Shipworms; Symbiont; 16S rRNA phylogenyAbstract
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<6x3–6 lm) that bear a
single polar flagellum. All isolates are capable of chemoheterotrophic growth
in a simple mineral medium supplemented with cellulose as a sole source of
carbon and energy. Xylan, pectin, carboxymethylcellulose, cellobiose and a
variety of sugars and organic acids also support growth. Growth requires
addition of combined nitrogen when cultures are vigorously aerated, but all
isolates fix dinitrogen under microaerobic conditions. The pH, temperature and
salinity optima for growth were determined for six isolates and are
approximately 8<5, 30–35 °C and 0<3 M NaCl respectively. The isolates are
marine. In addition to NaCl, growth requires elevated concentrations of Ca2M
and Mg2M that reflect the chemistry of seawater. The DNA GMC content ranged
from 49 to 51 mol%. Four isolates were identical with respect to small-subunit
rRNA sequence over 891 positions compared and fall within a unique clade in
the c-subclass of the Proteobacteria. Based on morphological, physiological
and phylogenetic characteristics and specific symbiotic association with
teredinid bivalves, a new genus and species, Teredinibacter turnerae gen. nov.,
sp. nov., is proposed. The type strain is T7902T (vATCC 39867TvDSM 15152T).
Description
Author Posting. © Society for General Mircobiology, 2002. This article is posted here by permission of Society for General Mircobiology for personal use, not for redistribution. The definitive version was published in International Journal of Systematic Bacteriology 52 (2002): 2261-2269, doi:10.1099/ijs.0.02184-0.
Collections
Suggested Citation
International Journal of Systematic Bacteriology 52 (2002): 2261-2269Related items
Showing items related by title, author, creator and subject.
-
Presevered Shells of Class Bivalvia
Linda Golder -
Variation in Serripes groenlandicus (Bivalvia) growth in a Norwegian high-Arctic fjord : evidence for local- and large-scale climatic forcing
Ambrose, William G.; Carroll, Michael L.; Greenacre, Michael; Thorrold, Simon R.; McMahon, Kelton W. (2006-03-03)We examined the growth rate of the circumpolar Greenland Cockle (Serripes groenlandicus) over a period of 20 years (1983-2002) from Rijpfjord, a high-Arctic fjord in northeast Svalbard (80º10´N, 22°15´E). This period ... -
Coexistence of multiple proteobacterial endosymbionts in the gills of the wood-boring bivalve Lyrodus pedicellatus (Bivalvia: Teredinidae)
Distel, Daniel L.; Beaudoin, David J.; Morrill, Wendy (American Society for Microbiology, 2002-12)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 ...