16S rRNA-targeted oligonucleotide probes for direct detection of Propionibacterium freudenreichii in presence of Lactococcus lactis with multicolour fluorescence in situ hybridization

被引：8
|
作者：
Miks-Krajnik, M. [1 ,2 ]
Babuchowski, A. [1 ]
机构：
[1] Univ Warmia & Mazury, Fac Food Sci, Chair Ind & Food Microbiol, PL-10726 Olsztyn, Poland
[2] Natl Univ Singapore, Food Sci & Technol Programme, Dept Chem, Singapore 117543, Singapore
来源：
LETTERS IN APPLIED MICROBIOLOGY | 2014年 / 59卷 / 03期
关键词：
16S rRNA oligonucleotide probes; fluorescent in situ hybridization; Lactococcus lactis; milk; Propionibacterium freudenreichii; GRAM-POSITIVE BACTERIA; DNA G+C CONTENT; CHEESE; IDENTIFICATION; DATABASE; ACNES; ARB;
D O I：
10.1111/lam.12278
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Multicolour fluorescence in situ hybridization (FISH) has been applied to detect Lactococcus lactis and Propionibacterium freudenreichii cells in mixed populations in medium and skimmed milk, using epifluorescent microscopy. The 16S rRNA-targeted 18-mer oligonucleotide probes, specific for P. freudenreichii were designed and evaluated. Based on multiple alignments of designed sequences, eight 16S rRNA probes were selected for in vitro studies. The permeabilization protocol was optimized for simultaneous hybridization of propionibacteria and lactococci cells. The probes GLO(62) (62-80), PEU64 (64-82) and PFX311 (311-329) were found specific for P. freudenreichii in analysis in vitro. Lactococcus lactis cells were labelled with LactV5 (822-840), (S-S-L.lact-0821-a-A-18) probe. The following combinations of oligonucleotide probes: LactV5/GLO(62), LactV5/PEU64 and LactV5/PFX311, enabled differentiation of Lc. lactis and P. freudenreichii cells in culture media and in skimmed milk.
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页码：320 / 327
页数：8
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