FN Archimer Export Format PT J TI Cosmopolitan Distribution of Endozoicomonas-Like Organisms and Other Intracellular Microcolonies of Bacteria Causing Infection in Marine Mollusks BT AF Cano, Irene Ryder, David Webb, Steve C. Jones, Brian J. Brosnahan, Cara L. Carrasco, Noelia Bodinier, Barbara Furones, Dolors Pretto, Tobia Carella, Francesca Chollet, Bruno Arzul, Isabelle Cheslett, Deborah Collins, Evelyn Lohrmann, Karin B. Valdivia, Ana L. Ward, Georgia Carballal, María J. Villalba, Antonio Marigómez, Ionan Mortensen, Stein Christison, Kevin Kevin, Wakeman C. Bustos, Eduardo Christie, Lyndsay Green, Matthew Feist, Stephen W. AS 1:1;2:1;3:2;4:3;5:3;6:4;7:4;8:4;9:5;10:6;11:7;12:7;13:8;14:9;15:9;16:10;17:10;18:10,11,12;19:12;20:13;21:14;22:15;23:16;24:17;25:1;26:1;27:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:PDG-RBE-SGMM-LGPMM;12:PDG-RBE-SGMM-LGPMM;13:;14:;15:;16:;17:;18:;19:;20:;21:;22:;23:;24:;25:;26:;27:; C1 International Centre of Excellence for Aquatic Animal Health, Cefas Weymouth Laboratory, Weymouth, United Kingdom Cawthron Institute, Nelson, New Zealand Animal Health Laboratory, Ministry for Primary Industries, Upper Hutt, New Zealand Institut de Recerca i Tecnologia Agroalimentaries (IRTA), Sant Carles de la Ràpita, Tarragona, Spain Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy Department of Biology, University of Naples Federico II, Naples, Italy SG2M-LGPMM, Laboratoire De Génétique Et Pathologie Des Mollusques Marins, Ifremer, La Tremblade, France Marine Institute, Galway, Ireland Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Centro Innovación Acuícola Aquapacífico, Coquimbo, Chile Life Sciences Department, Natural History Museum, London, United Kingdom Centro de Investigacións Mariñas, Consellería do Mar da Xunta de Galicia, Vilanova de Arousa, Spain Centro de Investigacións Mariñas, Consellería do Mar da Xunta de Galicia, Vilanova de Arousa, Spain Research Centre for Experimental Marine Biology and Biotechnology (PIE), University of the Basque Country (UPV/EHU), Plentzia, Spain Institute of Marine Research, Bergen, Norway Department of Environment, Forestry and Fisheries, Cape Town, South Africa Institute for International Collaboration, Hokkaido University, Sapporo, Japan Centro Acuícola Pesquero de Investigación Aplicada (CAPIA), Universidad Santo Tomás, Sede Puerto Montt, Chile C2 CEFAS, UK INST CAWTHRON, NEW ZEALAND MINIST PRIMARY INDUST, NEW ZEALAND IRTA, SPAIN IZSVE, ITALY UNIV NAPLES, ITALY IFREMER, FRANCE MARINE INST, IRELAND UNIV CATOLICA NORTE, CHILE NHM, UK CIMA, SPAIN CIMA, SPAIN UNIV PAIS VASCO EHU, SPAIN IMR (BERGEN), NORWAY DEPART ENVIRONM FORESTRY FISHERIES, SOUTH AFRICA UNIV HOKKAIDO, JAPAN UNIV SANTO TOMAS, CHILE SI LA TREMBLADE SE PDG-RBE-SGMM-LGPMM IN WOS Ifremer UPR DOAJ copubli-europe copubli-int-hors-europe copubli-sud IF 3.941 TC 18 UR https://archimer.ifremer.fr/doc/00658/77032/78322.pdf https://archimer.ifremer.fr/doc/00658/77032/78325.docx https://archimer.ifremer.fr/doc/00658/77032/78327.xlsx LA English DT Article DE ;mollusk;OTU;Endozoicomonas;Chlamydiae;Mycoplasma;Francisella;Lucinoma;Ridgeia AB Intracellular microcolonies of bacteria (IMC), in some cases developing large extracellular cysts (bacterial aggregates), infecting primarily gill and digestive gland, have been historically reported in a wide diversity of economically important mollusk species worldwide, sometimes associated with severe lesions and mass mortality events. As an effort to characterize those organisms, traditionally named as Rickettsia or Chlamydia-like organisms, 1950 specimens comprising 22 mollusk species were collected over 10 countries and after histology examination, a selection of 99 samples involving 20 species were subjected to 16S rRNA gene amplicon sequencing. Phylogenetic analysis showed Endozoicomonadaceae sequences in all the mollusk species analyzed. Geographical differences in the distribution of Operational Taxonomic Units (OTUs) and a particular OTU associated with pathology in king scallop (OTU_2) were observed. The presence of Endozoicomonadaceae sequences in the IMC was visually confirmed by in situ hybridization (ISH) in eight selected samples. Sequencing data also indicated other symbiotic bacteria. Subsequent phylogenetic analysis of those OTUs revealed a novel microbial diversity associated with molluskan IMC infection distributed among different taxa, including the phylum Spirochetes, the families Anaplasmataceae and Simkaniaceae, the genera Mycoplasma and Francisella, and sulfur-oxidizing endosymbionts. Sequences like Francisella halioticida/philomiragia and Candidatus Brownia rhizoecola were also obtained, however, in the absence of ISH studies, the association between those organisms and the IMCs were not confirmed. The sequences identified in this study will allow for further molecular characterization of the microbial community associated with IMC infection in marine mollusks and their correlation with severity of the lesions to clarify their role as endosymbionts, commensals or true pathogens. PY 2020 PD OCT SO Frontiers In Microbiology SN 1664-302X PU Frontiers Media SA VL 11 UT 000588677100001 DI 10.3389/fmicb.2020.577481 ID 77032 ER EF