Table 2.
Some strategies for the physiological improvement of bacterial biocontrol agents.
| Microorganism and Strain | Approach for the Improvement | Effect Observed on B-BCA | Reference |
|---|---|---|---|
| Lactobacillus plantarum PM411 | Combined hyperosmotic and acid stress adaptation | Increased survival on plant surfaces and overexpression of stress-related genes. | [99] |
| L. plantarum TC92 and PM411 | Mixed bacteria combined with lactic acid | Improvement of efficiency and reliability of biocontrol of fire blight. | [100] |
| Pantoea agglomerans EPS125 | Combined saline osmotic stress and osmolyte amendment | Intracellular accumulation of trehalose and glycine betaine and higher tolerance to desiccation. | [101] |
| Pseudomonas fluorescens EPS62e | Combined saline osmotic stress and osmolyte amendment | Intracellular accumulation of trehalose, glucosyl-glycerol, and N-acetylglutaminylglutamine amide and improvement of cell survival on plant surfaces and after formulation. | [102,103] |
| P. fluorescens EPS62e | Nutritional enhancement combined with osmoadaptation | Improvement of fitness in plant surfaces and efficacy in biocontrol of fire blight. | [104] |
| P. fluorescens EPS817 and EPS894 | Mixed bacteria producing different bioactive metabolites | Improvement of efficiency and reliability of biocontrol of Phytophthora root. | [30] |