A resounding second of this motion...
The best definition of "what is a biofilm" is the expression of a "biofilm
phenotype" - so maybe we ought to start defining that...
Rob
>Dear all,
>
>I think that two things must be taken into consideration:
>1) Bacterial cells(how much ?) accumulated to form a colony or a film
>inside (or not) an organic matrix.
>2) Physiological expression of characters which would be characterictic of
>bacteria living in biofilm.
>A lot of knowledge is accumulated on morphology of biofilms. Knowledge
>about physiology is not sufficient. Actually, who is able to show that
>there are physiological differences between bacteria OF THE SAME AGE in
>stationnary phase of growth(planctonic cells) and in biofilms. Recent
>studies of my lab show (on Listeria monocytogenes and E coli O157 H7) that
>the same resistance to desinfection (for example)is observed.
>We need physiological studies to specify the biofilm phenotype if it exists
>and when it is expressed during growth. Definition would have to take into
>account morphological aspects of bacteria expressing the phenotype.
>J. Labadie.
>
>Jean Labadie
>Directeur Adjoint SRV
>(Deputy Director Meat Research Laboratory).
>U R Microbiologie
>INRA de Theix
>63122 St Genes Champanelle
>France
>tel 04 73 62 41 57
>Fax 04 73 62 42 68
>
>
>
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