FN Archimer Export Format PT J TI Invasion Is a Community Affair: Clandestine Followers in the Bacterial Community Associated to Green Algae, Caulerpa racemosa, Track the Invasion Source BT AF AIRES, Tania SERRAO, Ester A. KENDRICK, Gary DUARTE, Carlos M. ARNAUD-HAOND, Sophie AS 1:1;2:1;3:2;4:2,3;5:4; FF 1:;2:;3:;4:;5:PDG-RBE-HM-RHSETE; C1 Univ Algarve, Ctr Marine Sci, Faro, Portugal. Univ Western Australia, Sch Plant Biol, Crawley, Australia. Inst Mediterrani Estudis Avancats, Dept Global Change Res, Esporles, Mallorca, Spain. Inst Francais Rech Exploitat Mer, Plouzane, France. C2 UNIV ALGARVE, PORTUGAL UNIV WESTERN AUSTRALIA, AUSTRALIA IMEDEA, SPAIN IFREMER, FRANCE SI SETE SE PDG-RBE-HM-RHSETE IN WOS Ifremer jusqu'en 2018 copubli-europe copubli-int-hors-europe IF 3.534 TC 44 UR https://archimer.ifremer.fr/doc/00157/26791/24886.pdf LA English DT Article AB Biological invasions rank amongst the most deleterious components of global change inducing alterations from genes to ecosystems. The genetic characteristics of introduced pools of individuals greatly influence the capacity of introduced species to establish and expand. The recently demonstrated heritability of microbial communities associated to individual genotypes of primary producers makes them a potentially essential element of the evolution and adaptability of their hosts. Here, we characterized the bacterial communities associated to native and non-native populations of the marine green macroalga Caulerpa racemosa through pyrosequencing, and explored their potential role on the strikingly invasive trajectory of their host in the Mediterranean. The similarity of endophytic bacterial communities from the native Australian range and several Mediterranean locations confirmed the origin of invasion and revealed distinct communities associated to a second Mediterranean variety of C. racemosa long reported in the Mediterranean. Comparative analysis of these two groups demonstrated the stability of the composition of bacterial communities through the successive steps of introduction and invasion and suggested the vertical transmission of some major bacterial OTUs. Indirect inferences on the taxonomic identity and associated metabolism of bacterial lineages showed a striking consistency with sediment upheaval conditions associated to the expansion of their invasive host and to the decline of native species. These results demonstrate that bacterial communities can be an effective tracer of the origin of invasion and support their potential role in their eukaryotic host's adaptation to new environments. They put forward the critical need to consider the 'meta-organism' encompassing both the host and associated micro-organisms, to unravel the origins, causes and mechanisms underlying biological invasions. PY 2013 PD JUN SO Plos One SN 1932-6203 PU Public Library Science VL 8 IS 7 UT 000322064300034 DI 10.1371/journal.pone.0068429 ID 26791 ER EF