Development of a 16S rDNA-targeted PCR assay for monitoring of Lactobacillus plantarum and Lact. rhamnosus during co-cultivation for production of inoculants for silages.
OBJECTIVE
This paper reports a simple, rapid approach for the parallel detection of Lactobacillus plantarum and Lact. rhamnosus in co-culture in order to produce an inoculant mixture for silage purposes.


RESULTS
The 16S rDNA-targeted PCR primers were established for parallel detection of Lact. plantarum and Lact. rhamnosus in a single multiplex PCR. A protocol for application of these primers in direct PCR as well as colony-direct (CD) PCR was developed. These primers were also applicable for the estimation of the relative amount of each DNA type in mixed probes (semi-quantitative PCR).


CONCLUSIONS
The PCR assay presented in this study is a robust, fast and semi-quantitative approach for detection of Lact. plantarum and Lact. rhamnosus in liquid cultures as well as on agar plates.


CONCLUSIONS
This method provides an effective tool for the establishment of a regime for co-cultivation of Lact. plantarum and Lact. rhamnosus. This would enable faster and thus cost-reduced production of ensiling inoculants.
Department Bioengineering, Institute of Agricultural Engineering, Potsdam-Bornim, Germany. mklocke@atb-potsdam.de
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Mundt
D018920:Coculture Techniques; D003470:Culture Media; D017931:DNA Primers; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D007778:Lactobacillus / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D016133:Polymerase Chain Reaction / Q000379:methods*; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D012820:Silage / Q000382:microbiology*; D013045:Species Specificity
D003470:Culture Media; D017931:DNA Primers; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S