FN Archimer Export Format PT J TI Bacterial communities associated with the wood-feeding gastropod Pectinodonta sp (Patellogastropoda, Mollusca) BT AF ZBINDEN, Magali PAILLERET, Marie RAVAUX, Juliette GAUDRON, Sylvie M. HOYOUX, Caroline LAMBOURDIERE, Josie WAREN, Anders LORION, Julien HALARY, Sebastien DUPERRON, Sebastien AS 1:1;2:2;3:1;4:1;5:3;6:4;7:5;8:6;9:1;10:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:; C1 Univ Paris 06, CNRS, UMR 7138, AMEX, F-72252 Paris 05, France. Univ Paris 06, Lab Paleobot Paleodiversite & Paleoenvironm, F-72252 Paris, France. Univ Liege, Unite Morphol Ultrastruct, Lab Morphol Fonct & Evolut, Liege, Belgium. CNRS MNHN, Museum Natl Hist Nat, Dept Systemat & Evolut, Paris, France. Swedish Museum Nat Hist, S-10405 Stockholm, Sweden. UPMC IRD MNHN CNRS, UMR 7138, Museum Natl Hist Nat, Dept Systemat & Evolut, Paris, France. C2 UNIV PARIS 06, FRANCE UNIV PARIS 06, FRANCE UNIV LIEGE, BELGIUM MNHN, FRANCE MNHN, SWEDEN UNIV PARIS 06, FRANCE IF 3.456 TC 28 UR https://archimer.ifremer.fr/doc/00206/31687/30070.pdf LA English DT Article CR BOA0 BOA1 SANTOBOA BO Alis DE ;sunken woods;wood-feeding gastropod;symbiosis;cellulolytic activity AB Even though their occurrence was reported a long time ago, sunken wood ecosystems at the deep-sea floor have only recently received specific attention. Accumulations of wood fragments in the deep sea create niches for a diverse fauna, but the significance of the wood itself as a food source remains to be evaluated. Pectinodonta sp. is a patellogastropod that exclusively occurs on woody substrates, where individuals excavate deep depressions, and is thus a potential candidate for a wood-eating lifestyle. Several approaches were used on Pectinodonta sampled close to Tongoa island (Vanuatu) to investigate its dietary habits. Host carbon is most likely derived from the wood material based on stable isotopes analyses, and high cellulase activity was measured in the digestive mass. Electron microscopy and FISH revealed the occurrence of two distinct and dense bacterial communities, in the digestive gland and on the gill. Gland-associated 16S rRNA gene bacterial phylotypes, confirmed by in situ hybridization, included members of three divisions (Alpha- and Gammaproteobacteria, Bacteroidetes), and were moderately related (90-96% sequence identity) to polymer-degrading and denitrifying bacteria. Gill-associated phylotypes included representatives of the Delta- and Epsilonproteobacteria. The possible involvement of these two bacterial communities in wood utilization by Pectinodonta sp. is discussed. PY 2010 PD NOV SO Fems Microbiology Ecology SN 0168-6496 PU Wiley-blackwell Publishing, Inc VL 74 IS 2 UT 000282883200017 BP 450 EP 463 DI 10.1111/j.1574-6941.2010.00959.x ID 31687 ER EF