期刊
SCIENCE
卷 343, 期 6170, 页码 529-533出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1246794
关键词
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资金
- California Institute of Technology (Caltech) Division of Biology Postdoctoral Fellowship
- Caltech Center for Environmental Microbiology Interactions
- Howard Hughes Medical Institute
- Office of Naval Research [N00014-08-1-0413, N00014-05-1-0579]
- NIH [GM094800B]
Many benthic marine animal populations are established and maintained by free-swimming larvae that recognize cues from surface-bound bacteria to settle and metamorphose. Larvae of the tubeworm Hydroides elegans, an important biofouling agent, require contact with surface-bound bacteria to undergo metamorphosis; however, the mechanisms that underpin this microbially mediated developmental transition have been enigmatic. Here, we show that a marine bacterium, Pseudoalteromonas luteoviolacea, produces arrays of phage tail-like structures that trigger metamorphosis of H. elegans. These arrays comprise about 100 contractile structures with outward-facing baseplates, linked by tail fibers and a dynamic hexagonal net. Not only do these arrays suggest a novel form of bacterium-animal interaction, they provide an entry point to understanding how marine biofilms can trigger animal development.
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