Table 5. Quantitative real-time RT-PCR analysis of gene expression

Gene

Relative gene expression

GlcNAc – 60m

*

(GlcNAc)2 – 60m

*

Crab attached

(GlcN)2 – 60m

*

Array

Real-time PCR

§

Array

Real-time PCR

§

Array

Real-time PCR

§

Array

Real-time PCR

§

VC0409

MSHA pilin protein MshA (mshA)

1.0

0.85

1.1

0.85

1.2

0.88

1.2

0.86

 

(0.80-0.90)

 

(0.76-0.95)

 

(0.79-0.93)

 

(0.73-1.01)

VC0449

Methyl-accepting chemotaxis protein

2.8

10.1

4.1

12.0

0.6

0.36

1.0

1.84

 

(9.07-11.3)

 

(10.8-13.5)

 

(0.30-0.43)

 

(1.53-2.21)

VC0620

Peptide ABC transporter, periplasmic peptide-binding protein

1.3

0.91

71

129

6.6

27.2

1.2

1.19

 

(0.82-1.01)

 

(82.7-200)

 

(23.9-30.8)

 

(0.99-1.44)

VC0828

Toxin co-regulated pilin (tcpA)

1.1

1.57

1.3

1.65

0.8

0.98

1.0

1.02

 

(1.48-1.66)

 

(1.52-1.79)

 

(0.86-1.19)

 

(0.85-1.21)

VC0972

Chitoporin ChiP

2.4

2.82

30

202

8.4

31.1

1.2

1.50

 

(2.19-3.63)

 

(186-221)

 

(27.9-34.7)

 

(1.24-1.80)

VC1153

Conserved hypothetical protein

1.1

1.39

7.8

9.30

4.1

3.76

1.3

1.53

 

(1.26-1.53)

 

(8.43-10.3)

 

(3.29-4.29)

 

(1.21-1.94)

VC1282

PTS system, cellobiose-specific IIC component (celB)

0.8

0.15

0.6

0.32

3.9

2.34

31

118

 

(0.11-0.21)

 

(0.25-0.40)

 

(2.10-2.61)

 

(98-141)

VC2423

Fimbrial protein (pilA)

1.0

0.80

12

54.3

9.0

17.1

1.0

0.98

 

(0.63-0.85)

 

(50.5-58.4)

 

(15.4-19.1)

 

(0.83-1.16)

VCA0027

Chitinase (chiA-2)

0.9

1.37

5.0

8.69

14

14.4

0.9

0.93

 

(1.19-1.58)

 

(3.97-10.3)

 

(12.7-16.4)

 

(0.78-1.11)

VCA0140

Spindolin-related protein

0.9

0.72

2.6

4.28

7.5

3.37

0.9

1.06

 

(0.70-0.74)

 

(3.93-4.66)

 

(2.94-3.86)

 

(0.88-1.27)

*Fold induction relative to culture grown without the indicated inducer.

Fold induction of the attached population relative to the planktonic population.

Average induction values from two arrays with same RNA sample.

§

Average induction values (and range of induction values) obtained from three replicas using same RNA sample as in ‡.