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Reappraisal of the effect of temperature on the growth kinetics of Aeromonas salmonicida
Author(s) -
GuérinFaublée V.,
Charles S.,
Chomarat M.,
Flandrois J.P.
Publication year - 1997
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1046/j.1472-765x.1997.00229.x
Subject(s) - aeromonas salmonicida , aeromonas , kinetics , vibrionaceae , microbiology and biotechnology , biology , bacteria , zoology , chemistry , physics , genetics , quantum mechanics
The effect of temperature (1–34 °C ) on the maximum specific growth rate of Aeromonas salmonicida could not be described by the classical growth models ; for some strains, two optimal temperatures at 23 °C and 30 °C were observed, as well as an unexpected increase in the pseudolag time above 27 °C. This could be explained by the presence of two subsets, notably S‐layer + and S‐layer − sub‐populations. The A − cells had higher growth parameters (T opt and μ opt ) than the A + cells and were selected by subcultures above 30 °C. Yet the relative proportion of A + cells did not explain all the variation of μ max versus temperature, and the growth kinetics of an Aer. salmonicida isolate remained unpredictable.