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Silver ion effects on Hyphomicrobium species growth initiation and apparent minimum growth temperatures
Author(s) -
Giangiordano R.A.,
Klein D.A.
Publication year - 1994
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 - 10.1111/j.1472-765x.1994.tb00840.x
Subject(s) - ion , bacterial growth , growth rate , chemistry , biology , bacteria , genetics , geometry , mathematics , organic chemistry
A shaken thermal gradient device providing temperatures between 8.3 and 33.5° C was used to investigate the effects of silver ion on the duration of the lag phase and on minimum apparent growth temperatures of Hyphomicrobium spp. grown at 29 and 9°C. With 29°C‐grown inocula, at lower temperatures, an increased time was required for growth initiation in the presence of silver ion added at 5 ng ml ‐1 . With silver ion added at 10 or 100 ng ml ‐1 , growth initiation was not observed at lower temperatures. With 100 ng ml ‐1 added silver ion, this effect also was observed with 9°C‐grown inocula. This increased sensitivity to silver ion could limit the ability of Hyphomicrobium spp., and possibly other microbes, to initiate growth and to contribute to microbial functioning in silver‐impacted low temperature environments.