Molecular Techniques Revealed Highly Diverse Microbial Communities in Natural Marine Biofilms on Polystyrene Dishes for Invertebrate Larval Settlement
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2014-01-09Online Publication Date
2014-01-09Print Publication Date
2014-07Permanent link to this record
http://hdl.handle.net/10754/598880
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Biofilm microbial communities play an important role in the larval settlement response of marine invertebrates. However, the underlying mechanism has yet to be resolved, mainly because of the uncertainties in characterizing members in the communities using traditional 16S rRNA gene-based molecular methods and in identifying the chemical signals involved. In this study, pyrosequencing was used to characterize the bacterial communities in intertidal and subtidal marine biofilms developed during two seasons. We revealed highly diverse biofilm bacterial communities that varied with season and tidal level. Over 3,000 operational taxonomic units with estimates of up to 8,000 species were recovered in a biofilm sample, which is by far the highest number recorded in subtropical marine biofilms. Nineteen phyla were found, of which Cyanobacteria and Proteobacteria were the most dominant one in the intertidal and subtidal biofilms, respectively. Apart from these, Actinobacteria, Bacteroidetes, and Planctomycetes were the major groups recovered in both intertidal and subtidal biofilms, although their relative abundance varied among samples. Full-length 16S rRNA gene clone libraries were constructed for the four biofilm samples and showed similar bacterial compositions at the phylum level to those revealed by pyrosequencing. Laboratory assays confirmed that cyrids of the barnacle Balanus amphitrite preferred to settle on the intertidal rather than subtidal biofilms. This preference was independent of the biofilm bacterial density or biomass but was probably related to the biofilm community structure, particularly, the Proteobacterial and Cyanobacterial groups. © 2014 Springer Science+Business Media New York.Citation
Lee OO, Chung HC, Yang J, Wang Y, Dash S, et al. (2014) Molecular Techniques Revealed Highly Diverse Microbial Communities in Natural Marine Biofilms on Polystyrene Dishes for Invertebrate Larval Settlement. Microbial Ecology 68: 81–93. Available: http://dx.doi.org/10.1007/s00248-013-0348-3.Sponsors
This study was supported by the National Basic Research Program of China (973 Program, No. 2012CB417304), COMRA project of China (COMRRDA12SC02), and awards from the Deep Sea Institute of Science and Engineering, the Chinese Academy of Science (SIDSSE-201206) and from the King Abdullah University of Science and Technology granted to P.Y. Qian (SA-C0040/UK-C0016) and grant from HKSAR government (GRF661611) for Biofilm study.Publisher
Springer NatureJournal
Microbial EcologyPubMed ID
24402362ae974a485f413a2113503eed53cd6c53
10.1007/s00248-013-0348-3
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