Research Article
In Vitro Susceptibility and Florfenicol Resistance in Citrobacter Isolates and Whole-Genome Analysis of Multidrug-Resistant Citrobacter freundii
Table 2
Primers used for the detection of florfenicol resistance genes in this work.
| Target gene | Primer | Primer sequence (5-3) | Amplicon size (bp) | Reference |
| floR | floR-F | GGCTTTCGTCATTGCGTCTC | 650 | Zhang et al. [44] | floR-R | ATCGGTAGGATGAAGGTGAGGA | fexA | fexA-F | GTACTTGTAGGTGCAATTACGGCTGA | 1,272 | Kehrenberg and Schwarz [45] | fexA-R | CGCATCTGAGTAGGACATAGCGTC | fexB | fexB-F | TTCCCACTATTGGTGAAAGGAT | 816 | Liu et al. [23] | fexB-R | GCAATTCCCTTTTATGGACGTT | pexA | pexA-F | ACAGTGCAGGTCGAAGAACC | 215 | Zhao et al. [46] | pexA-R | TGCATTACCAATCGACATCC | optrA | optrA-F | AGGTGGTCAGCGAACTAA | 1,395 | Wang et al. [25] | optrA-R | ATCAACTGTTCCCATTCA | Cfr | cfr-F | TGAAGTATAAAGCAGGTTGGGAGTCA | 746 | Kehrenberg and Schwarz [47] | cfr-R | ACCATATAATTGACCACAAGCAGC | estDL136 | estDL136-F | TGCCCGCACCCGATTTCT | 864 | Zhang et al. [48] | estDL136-R | GATTGGATGCACCTCGTTCTA |
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