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Applied and Environmental Microbiology, February 2008, p. 1259-1263, Vol. 74, No. 4
0099-2240/08/$08.00+0     doi:10.1128/AEM.01747-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Intergeneric Coaggregation among Drinking Water Bacteria: Evidence of a Role for Acinetobacter calcoaceticus as a Bridging Bacterium{triangledown}

Lúcia Chaves Simões, Manuel Simões, and Maria João Vieira*

Institute for Biotechnology and Bioengineering (IBB), Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal

Received 27 July 2007/ Accepted 11 December 2007

Intergeneric coaggregation of drinking water bacteria was tested. Acinetobacter calcoaceticus was found not only to autoaggregate but also to coaggregate with four of the five other isolates (Burkholderia cepacia, Methylobacterium sp., Mycobacterium mucogenicum, Sphingomonas capsulata, and Staphylococcus sp.). In its absence, no coaggregation was found. Interactions were lectin-saccharide mediated. The putative bridging function of A. calcoaceticus was evidenced by multispecies biofilm studies, through a strain exclusion process.

* Corresponding author. Mailing address: Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal. Phone: 351 253604404. Fax: 351 253678986. E-mail: mjv{at}deb.uminho.pt

{triangledown} Published ahead of print on 21 December 2007.

Applied and Environmental Microbiology, February 2008, p. 1259-1263, Vol. 74, No. 4
0099-2240/08/$08.00+0     doi:10.1128/AEM.01747-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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