Premium
Evaluation of the psychrotrophic specific signatures for cspA gene and 16 S r DNA on the phenotype of B acillus cereus sensu strictu
Author(s) -
Montanhini Maike T Maziero,
Neto Roberto Montanhini,
Bittencourt Juliana Vitória M,
Pinto José Paes de A N,
Bersot Luciano dos Santos
Publication year - 2014
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/1471-0307.12092
Subject(s) - biology , bacillus cereus , mesophile , psychrotrophic bacteria , 16s ribosomal rna , microbiology and biotechnology , cereus , sensu , genotype , gene , bacteria , genetics , botany , genus
This study characterised the psychrotrophic genotypes and phenotypes behaviour of 63 strains of Bacillus cereus sensu stricto isolated from dairy products. The presence of the cspA gene signature and the 16 S r DNA mesophilic and/or psychrotrophic specific signatures was evaluated. Among the strains, 25 (39.7%) had the cspA gene signature, 38 (60.3%) had both mesophilic and psychrotrophic 16 S r DNA signatures, 24 (38.1%) had only mesophilic and one exhibited only psychrotrophic. No strain grew at 7 °C. The results indicate that the presence of psychrotrophic signatures for cspA gene or the 16S r DNA did not ensure a psychrotrophic behaviour on a B . cereus phenotype.