Microorganisms, such as plant growth-promoting rhizobacteria and mycorrhizal fungi, have demonstrated their ability to formulate biofertilizers in the agricultural sector, providing plants with nutrients required to enhance their growth, increase yield, manage abiotic and biotic stress, and prevent phytopathogens. The various microorganisms used as nitrogen-supplying biofertilizers are Rhizobium spp., Actinorhizobium spp., Azotobacter spp., and Azospirillum spp. They are mainly used for leguminous crops, but the products are used to grow other crops as well, especially rice and sugarcane. Microbes with the plants include the nutrients supply to crops, plant growth stimulation, producing phytohormones, biocontrol of phytopathogens, improving soil structure, bioac- cumulation of inorganic compounds, and bioremediation of metal-contaminated soils. As microorganisms help break down organic matter, they release essential nutrients and carbon dioxide into the soil, fix nitrogen and help transform nutrients into mineral forms that plants can use through a process by mineralization. Soil microorganisms are a major component of the natural fertility of soils. They can promote plant growth, increase crop productivity and contribute significantly to the mineral nutrition of crop plants. Bacteria, actinomycetes, and protozoa are hardy and can tolerate more soil disturbance than fungal populations so they dominate in tilled soils while fungal and nematode populations tend to dominate in untilled or no-till soils. There are more microbes in a teaspoon of soil than there are people on the earth.

some endophytes are really useful and now being considered an important parameter in plant breeding programs. These endophytes can give nutrients to plants or important organic compounds which can be helpful for plants. Read some literature about the microbiomes or endophytes

Dear Muhammad Haroon thanks you for your contribution to the discussion

Beneficial microorganisms include those that create symbiotic associations with plant roots promote nutrient mineralization and availability, produce plant growth hormones, and are antagonists of plant pests, parasites or diseases. Beneficial soil microbes perform fundamental functions such as nutrient cycling, breaking down crop residues, and stimulating plant growth. While the role of microbes to maintain soil health and contribute to crop performance is clear, the soil biological component is extremely difficult to observe and manage. Microorganisms have the potential to improve plant growth under abiotic stress conditions by promoting the production of low-molecular-weight osmolytes, such as glycinebetaine, proline, and other amino acids, mineral phosphate solubilization, nitrogen fixation, organic acids, and producing key enzymes. Microorganisms are environmental friendly renewable sources of nutrients and they activate soil biology and restore soil fertility. In addition to fighting agricultural pathogens, microbes can also alleviate abiotic stresses. Within food plant cropping systems, microorganisms provide vital functions and ecosystem services, such as biological pest and disease control, promotion of plant growth and crop quality, and biodegradation of organic matter and pollutants. Micro-organisms such as bacteria, fungi, viruses, and protozoa can be used to protect plants, as some of them are parasites or pathogens of insects or other organisms that are pests or cause disease in plants.