Abstract：
Rhizospheric interactions among plant roots, arbuscular mycorrhizal fungi, and plant growth-promoting bacteria (PGPB) can enhance plant health by promoting nutrient acquisition and stimulating the plant immune system. This pot experiment, conducted in autoclaved soil, explored the synergistic impacts of the arbuscular mycorrhizal fungus Funneliformis mosseae with four individual bacterial strains, viz.: Cronobacter sp. Rz-7, Serratia sp. 5-D, Pseudomonas sp. ER-20 and Stenotrophomonas sp. RI-4 A on maize growth, root functional traits, root exudates, root colonization, and nutrient uptake. The comprehensive biochemical characterization of these bacterial strains includes assessments of mineral nutrient solubilization, plant hormone production, and drought tolerance. The results showed that all single and interactive treatments of the mycorrhizal fungus and bacterial strains improved maize growth, as compared with the control (no fungus or PGPB). Among single treatments, the application of the mycorrhizal fungus was more effective than the bacterial strains in stimulating maize growth. Within the bacterial treatments, Serratia sp. 5-D and Pseudomonas sp. ER-20 were more effective in enhancing maize growth than Cronobacter sp. Rz-7 and Stenotrophomonas sp. RI-4 A. All bacterial strains were compatible with Funneliformis mosseae to improve root colonization and maize growth. However, the interaction of mycorrhiza and Serratia sp. 5-D (M + 5-D) was the most prominent for maize growth improvement comparatively to all other treatments. We observed that bacterial strains directly enhanced maize growth while indirectly promoting biomass accumulation by facilitating increased mycorrhizal colonization, indicating that these bacteria acted as mycorrhizal helper bacteria.
摘要：
植物根际相互作用，丛枝菌根真菌，和植物生长促进细菌（PGPB）可以通过促进营养获取和刺激植物免疫系统来增强植物健康。这个锅实验，在蒸压土壤中进行，探索了丛枝菌根真菌真菌真菌真菌真菌真菌与四个单独的细菌菌株的协同作用，viz.:Cronobactersp.Rz-7,Serratiasp.5-D,假单胞菌。ER-20和窄食单胞菌属。RI-4A对玉米生长的影响，根系功能性状，根系分泌物，根定植，和营养吸收。这些细菌菌株的综合生化特征包括矿物质营养溶解的评估，植物激素生产，和耐旱性。结果表明，菌根真菌和细菌菌株的所有单一和交互处理都能改善玉米的生长，与对照（无真菌或PGPB）相比。在单一治疗中，在刺激玉米生长方面，菌根真菌的应用比细菌菌株更有效。在细菌治疗中，Serratiasp.5-D和假单胞菌属。ER-20在促进玉米生长方面比Cronobactersp更有效。Rz-7和窄食单胞菌。RI-4A。所有细菌菌株均与真菌真菌相容，以改善根系定植和玉米生长。然而,菌根和沙雷氏菌的相互作用。与所有其他处理相比，5-D（M5-D）对玉米生长的改善最为突出。我们观察到细菌菌株直接促进玉米生长，同时通过促进菌根定植增加间接促进生物量积累，表明这些细菌充当菌根辅助细菌。
