Paraburkholderia sp. GD17 improves tomato plant growth and resistance to Botrytis cinerea-induced disease

The plant growth promoting rhizobacteria have been repeatedly addressed in improving and resistance against pathogens. This study explored the role of Paraburkholderia sp. GD17 tomato to Botrytis cinerea (Bc). Tomato roots were treated with strain, then leaves inoculated Bc. Physiological biochemical parameters, gene expression analyzed. In absence Bc, efficiently improved growth, increased photosynthetic efficiency. presence GD17-bacterized plants exhibited an enhanced resistance, as indicated by 67% disease index non-bacterized plants, while 24% bacterized ones. response defense reaction was reinforced shown antioxidative capacity mitigated oxidative damage, well PR compared control. Photosynthesis inhibited Bc inoculation, a greater degree than soluble sugar contents significantly it controlled plants. carbohydrate catabolism-related genes, including starch degradation, photorespiration, pentose phosphate pathway, generally presented higher under attack. strain increasing Bc-induced alleviating damage. Additionally, optimized trade-off between strengthening metabolic regulation.