Table 2 Expression stability ranking of the candidate reference genes according to BestKeeper, NormFinder and geNorm original softwares and the Delta CT and RefFinder analysis.

From: Selection and validation of reference genes for gene expression studies in Klebsiella pneumoniae using Reverse Transcription Quantitative real-time PCR

Ranking

BestKeeper

NormFinder

GeNorm

Delta CT analysis

RefFinder analysis

Gene

r (p-value)

Gene

Stability Value (standard error)

Gene

M value

Gene

Average of STDEV

Gene

Geometric mean of ranking values

1

recA

0,849 (0.001)

recA

0,296 (0.082)

rpoC

0,44

recA

0,92

recA

1.78

2

rho

0,816 (0.001)

rho

0,328 (0.085)

proC

0,44

rho

0,92

rpoD

2.99

3

glnA

0,814 (0.001)

proC

0,423 (0.096)

rpoD

0,49

rpoD

1

rho

3

4

gyrA

0,739 (0.001)

rrsH

0,515 (0.109)

rrsH

0,6

gyrA

1,01

rpoC

3.13

5

ffh

0,712 (0.002)

gyrA

0,535 (0.112)

recA

0,67

proC

1,02

proC

3.31

6

rpoD

0,687 (0.003)

rpoC

0,614 (0.124)

rho

0,78

rpoC

1,06

rrsH

4.28

7

proC

0,66 (0.005)

rpoD

0,674 (0.134)

gyrA

0,86

rrsH

1,08

gyrA

6.19

8

rpoC

0,541 (0.03)

ffh

0,76 (0.148)

glnA

0,92

glnA

1,12

glnA

7.74

9

rrsH

0,42 (0.106)

glnA

0,776 (0.15)

ffh

0,99

ffh

1,31

ffh

9