Table 4: The effectiveness of cell suspensions of plant growth promoting bacteria on the content and activity of phenolic compounds in tomato plant infected with the causative agent of bacterial canker.
| Treatment of Plants |
Phenols, mg/g |
Catechins, mg/g |
Flavonoids, mg/g |
Antioxidant Activity of Phenols,
µm-EQ |
| Infected plants |
27.4±0.2¤
|
3.05±0.03¤
|
1.51±0.02¤
|
11.1±0.5¤
|
| Healthy plants |
22.7±0.2 |
2.92±0.04 |
1.43±0.02 |
6.5±0.4 |
| Bacillus subtilis |
41.0±0.6*¥
|
8.14±0.05*¥
|
1.68±0.03*¥
|
12.6±0.4¥
|
| Azotobacter chroococcum |
54.1±0.6*¥
|
14.58±0.05*¥
|
2.06±0.02*¥
|
14.8±0.6*¥
|
| Pseudomonas fluorescens |
33.9±0.5*¥
|
5.78±0.06*¥
|
1.61±0.03*¥
|
13.3±0.6*¥
|
* ‒ statistically significant differences between the infected plants and PGPB pre-treatment plants (p<0.05), ¥ ‒ statistically significant differences between the healthy plants and PGPB pre-treatment plants (p<0.05), ¤ ‒ statistically significant differences between the infected plants and the healthy plants.