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Ability of Pseudoalteromonas tunicata to colonize natural biofilms and its effect on microbial community structure

Ability of Pseudoalteromonas tunicata to colonize natural biofilms and its effect on microbial community structure
Ability of Pseudoalteromonas tunicata to colonize natural biofilms and its effect on microbial community structure
We investigated the effectiveness of surface colonization by the epiphytic marine bacterium Pseudoalteromonas tunicata firstly on a complex biofilm community on glass slides, and secondly, on the epiphytic community of Ulva australis. The effectiveness of P. tunicata was compared with the performance of Phaeobacter sp. 2.10, also a marine epiphytic isolate in the U. australis colonization experiments. Pseudoalteromonas tunicata cells were able to colonize the glass slide community at densities found naturally in the water column (9.7 x 10(4) cells mL(-1)). However, P. tunicata was a poor invader of the epiphytic community on U. australis at densities of 10(6) cells mL(-1). At densities of 10(8) cells mL(-1), P. tunicata again exerted little impact on the epiphytic community. Phaeobacter sp. 2.10 was also a poor invader at lower densities, but was able to invade and become dominant at densities of 10(8) cells mL(-1). Differences in the ability of P. tunicata and Phaeobacter sp. 2.10 to invade natural communities may be due to differences in the antibacterial compounds produced by the two species. These experiments suggest that epiphytic communities may have protective effects compared with inanimate surfaces.
biofilm, invasion, pseudoalteromonas tunicata, phaeobacter, epiphytic community
450-457
Rao, Dhana
53623cf3-0196-43cb-a592-16479aacb918
Skovhus, Torben
867fe7b5-75ca-4ef7-af2d-911b7740e366
Tujula, Niina
50935087-f230-4799-8f6a-765de17c8629
Holmström, Carola
e873401f-fb3a-4896-9ac9-2de03e1759e9
Dahllöf, Ingela
863343c3-f725-443f-9247-11b7a76352e7
Webb, Jeremy S.
ec0a5c4e-86cc-4ae9-b390-7298f5d65f8d
Kjelleberg, Staffan
043b66b5-130c-42f2-99b3-ec3eecf3248e
Rao, Dhana
53623cf3-0196-43cb-a592-16479aacb918
Skovhus, Torben
867fe7b5-75ca-4ef7-af2d-911b7740e366
Tujula, Niina
50935087-f230-4799-8f6a-765de17c8629
Holmström, Carola
e873401f-fb3a-4896-9ac9-2de03e1759e9
Dahllöf, Ingela
863343c3-f725-443f-9247-11b7a76352e7
Webb, Jeremy S.
ec0a5c4e-86cc-4ae9-b390-7298f5d65f8d
Kjelleberg, Staffan
043b66b5-130c-42f2-99b3-ec3eecf3248e

Rao, Dhana, Skovhus, Torben, Tujula, Niina, Holmström, Carola, Dahllöf, Ingela, Webb, Jeremy S. and Kjelleberg, Staffan (2010) Ability of Pseudoalteromonas tunicata to colonize natural biofilms and its effect on microbial community structure. FEMS Microbiology Ecology, 73 (3), 450-457. (doi:10.1111/j.1574-6941.2010.00917.x). (PMID:20579099)

Record type: Article

Abstract

We investigated the effectiveness of surface colonization by the epiphytic marine bacterium Pseudoalteromonas tunicata firstly on a complex biofilm community on glass slides, and secondly, on the epiphytic community of Ulva australis. The effectiveness of P. tunicata was compared with the performance of Phaeobacter sp. 2.10, also a marine epiphytic isolate in the U. australis colonization experiments. Pseudoalteromonas tunicata cells were able to colonize the glass slide community at densities found naturally in the water column (9.7 x 10(4) cells mL(-1)). However, P. tunicata was a poor invader of the epiphytic community on U. australis at densities of 10(6) cells mL(-1). At densities of 10(8) cells mL(-1), P. tunicata again exerted little impact on the epiphytic community. Phaeobacter sp. 2.10 was also a poor invader at lower densities, but was able to invade and become dominant at densities of 10(8) cells mL(-1). Differences in the ability of P. tunicata and Phaeobacter sp. 2.10 to invade natural communities may be due to differences in the antibacterial compounds produced by the two species. These experiments suggest that epiphytic communities may have protective effects compared with inanimate surfaces.

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More information

e-pub ahead of print date: 25 May 2010
Published date: September 2010
Keywords: biofilm, invasion, pseudoalteromonas tunicata, phaeobacter, epiphytic community

Identifiers

Local EPrints ID: 186847
URI: http://eprints.soton.ac.uk/id/eprint/186847
PURE UUID: fd42ecbd-3952-4eaa-96a2-8d91401bfc4c
ORCID for Jeremy S. Webb: ORCID iD orcid.org/0000-0003-2068-8589

Catalogue record

Date deposited: 16 May 2011 09:28
Last modified: 15 Mar 2024 03:26

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Contributors

Author: Dhana Rao
Author: Torben Skovhus
Author: Niina Tujula
Author: Carola Holmström
Author: Ingela Dahllöf
Author: Jeremy S. Webb ORCID iD
Author: Staffan Kjelleberg

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