Surface properties of SAR11 bacteria facilitate grazing avoidance
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2017 |
| Auteurs (14) | : | DADON-PILOSOF A CONLEY Keats,r JACOBI Yuval HABER Markus LOMBARD Fabien SUTHERLAND Kelly,r STEINDLER L TIKOCHINSKI Y RICHTER M GLÖCKNER Frank,oliver SUZUKI Marcelino,t WEST Nyree,j GENIN A YAHEL G |
| Revue scientifique | : | Nature Microbiology |
| Volume | : | |
| Fascicule | : | |
| Pages | : | |
| DOI | : | 10.1038/s41564-017-0030-5 |
| URL | : | https://doi.org/10.1038/s41564-017-0030-5 |
| Abstract | : | Oceanic ecosystems are dominated by minute microorganisms that play a major role in food webs and biogeochemical cycles1. Many microorganisms thrive in the dilute environment due to their capacity to locate, attach to, and use patches of nutrients and organic matter2,3. We propose that some free-living planktonic bacteria have traded their ability to stick to nutrient-rich organic particles for a non-stick cell surface that helps them evade predation by mucous filter feeders. We used a combination of in situ sampling techniques and next-generation sequencing to study the biological filtration of microorganisms at the phylotype level. Our data indicate that some marine bacteria, most notably the highly abundant Pelagibacter ubique and most other members of the SAR 11 clade of the Alphaproteobacteria, can evade filtration by slipping through the mucous nets of both pelagic and benthic tunicates. While 0.3 µm polystyrene beads and other similarly-sized bacteria were efficiently filtered, SAR11 members were not captured. Reversed-phase chromatography revealed that most SAR11 bacteria have a much less hydrophobic cell surface than that of other planktonic bacteria. Our data call for a reconsideration of the role of surface properties in biological filtration and predator-prey interactions in aquatic systems. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Dadon-Pilosof A, Conley KR, Jacobi Y, Haber M, Lombard F, Sutherland KR, Steindler L, Tikochinski Y, Richter M, Glöckner FO, Suzuki MT, West NJ, Genin A, Yahel G (2017) Surface properties of SAR11 bacteria facilitate grazing avoidance. Nat Microbiol | doi: 10.1038/s41564-017-0030-5
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