20.500.12556/DiRROS-31211 Bacterial extracellular vesicles exhibit distinct functional potential across biogeographic provinces of the South Pacific Ocean Bacterial extracellular vesicles (BEVs) are nanoscale membranous structures released by diverse types of bacteria, and are capable of transporting and delivering biological compounds between cells. Experimental investigation of BEVs in laboratory model systems indicates that these nanoparticles may play a number of roles in the ecophysiology of marine bacterial communities, but their functional potential in the environment remains unclear. Here we describe the proteomic composition of BEV populations over more than 5,000 nautical miles of surface waters in the South Pacific, linking BEV cargoes to the bacterial communities producing them. The presence of marine BEVs was consistently observed across a range of biogeochemical conditions, with an overall abundance comparable to that of bacterial cells (up to 108 BEVs L-1). The protein cargo of marine BEVs, however, differed significantly among ocean regions. The BEV populations were enriched in carbohydrate transporters under phytoplankton bloom conditions, and contained iron uptake-related proteins in nutrient-limited waters. These data suggest that BEVs could enable cells to perform key extracellular functions in the marine environment. Our observations highlight the ubiquity of marine BEVs and biogeographic patterns in their ecological potential across oceanic scales. bacterioplankton membrane vesicles TonB-dependent receptors siderophores saccharide uptake system bakterioplankton membranski vezikli TonB-odvisni receptorji siderofori sistem za privzem polisaharidov true false false Angleški jezik Slovenski jezik Neznano 2026-07-22 08:31:43 2026-07-22 08:31:43 2026-07-23 03:51:05 0000-00-00 00:00:00 2026 0 0 Soavtorji: Neza Orel, Tinkara Tinta, Leila Afjehi-Sadat, Haoran Liu, Thomas J Browning, Zhongwei Yuan, Eric P Achterberg, Steven J Biller, Daniel J Sher, Gerhard J Herndl; Nasl. z nasl. zaslona; Opis vira z dne 21. 7. 2026; str. 1-25 Vol. 2026 0000-00-00 PreprintVObjavi VTisku NiDoloceno 0000-00-00 0000-00-00 2026-07-01 579.68:579.22 1751-7370 10.1093/ismejo/wrag171 285542659 https://academic.oup.com/ismej/advance-article/doi/10.1093/ismejo/wrag171/8722774?login=false 1 03c39831-8597-11f1-a226-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48162 RAZ_Fadeev_Eduard_2026.pdf RAZ_Fadeev_Eduard_2026.pdf 1 4261C739FE38B57C13B208D1FD4E7AC5 b4e891ac24b0f4dbf224e8f77815af3a38d0200b16f1eda8cfff342288912988 4bde4a9a-8597-11f1-a226-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48163 Nacionalni inštitut za biologijo 0 0 0