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Development of a detection system for histidine decarboxylating lactic acid bacteria based on DNA probes, PCR and activity test
Author(s) -
Jeune Christine,
LonvaudFunel Aline,
Brink B.,
Hofstra H.,
Vossen J.M.B.M.
Publication year - 1995
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1995.tb05032.x
Subject(s) - primer (cosmetics) , biology , histidine , lactobacillus , histidine decarboxylase , leuconostoc , biochemistry , clostridium perfringens , bacteria , polymerase chain reaction , clostridium , microbiology and biotechnology , lactobacillus buchneri , gene , lactic acid , amino acid , chemistry , genetics , organic chemistry , lactobacillus plantarum
On the basis of the comparison of the nucleotide sequences of the histidine decarboxylase genes ( hdc A) of Lactobacillus 30A and Clostridium perfringens and the amino acid sequences of these histidine decarboxylases and those of Lactobacillus buchneri and Micrococcus , oligonucleotides unique to the hdc A genes were synthesized and used in PCR. All histidine‐decarboxylating lactic acid bacteria gave a signal with primer set JV16HC/JV17HC in PCR. In addition to this primer set, CL1/CL2 and CL1/JV17HC were also useful for the detection of histamine‐forming Leuconostoc œnos strains in PCR. The 150 base pair amplification product of the decarboxylating Leuc. œnos strain generated with primer set CL1/CL2 was sequenced. Alignment studies showed a high degree of relatedness among the hdc A gene products of Gram‐positive bacteria. The amplification products of the hdc A genes from Lact. buchneri and Leuc. œnos were used to serve as a DNA probe in hybridization studies. All histidine‐decarboxylating lactic acid bacteria gave a hybridization signal with the DNA probes. In hybridization only one false‐positive signal with a Lactobacillus lindneri strain was observed, which was anticipated to contain a truncated hdc A gene. In addition to these DNA probe tests, a simple and reliable activity test is presented, which can be used during starter selection to test strains for histidine decarboxylase activity.