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Egyptian Journal of Biological Pest Control

Table 4 Effect of pH values on Erwinia amylovora phages

From: Isolation and characterization of three bacteriophages infecting Erwinia amylovora and their potential as biological control agent

Phages

pH

Control

pH5

pH6

pH7

pH8

pH9

pH10

Pfu*

Log

Pfu

Log

Pfu

Log

Pfu

Log

Pfu

Log

Pfu

Log

Pfu

Log

pfu

R*

pfu

R*

pfu

R*

pfu

R*

pfu

R*

pfu

R*

pfu

R*

EAP1

6 × 1010

10.7

0

0

–

–

1 × 103

3

7.3

9 × 107

7.9

2.8

2.7 × 107

7.4

3.3

2 × 105

5.3

5.4

30

1.4

9.2

EAP2

7 × 1010

10.8

0

3 × 102

2.5

8.3

2 × 104

4.3

4.0

7 × 109

9.8

1.0

5 × 108

8.7

2.1

4 × 106

6.6

4.2

2 × 102

2.3

8.5

EAP3

4 × 109

9.6

0

0

–

–

–

–

–

3 × 106

6.5

3.1

3.5 × 104

4.5

5.1

2 × 103

3.3

6.3

10

1

8.6

EAP4

5 × 109

9.7

0

0

–

–

–

–

–

6 × 106

6.7

3.0

5 × 104

4.7

5.0

1 × 102

2.0

7.7

0

–

–

  1. *pfu: plaque form unit
  2. *R: Log ratio of reduction
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