It is a signal of introducing non-harmful microorganisms in to our bodies to keep the "bad bacteria" away. Probiotics assist in retaining the balance by introducing non harmful bacteria to our bodies, making it difficult for bad bacteria to extra colonize and lead to imbalance. Health of the soil in Agriculture is very similar to human health.
Microorganisms like nitrogen fixing bacteria and mycorrhizae play a very vital role in plant health. Mycorrhizae help in increasing the root density and in turn intensify the water uptake capacity. The unused nitrogen available in soil is converted into usable form. nitrate form for the plant by nitrogen fixing bacteria. In case of increase in the population of bad microorganisms, the health of the plants deteriorates and potentially dies off.
Plants probiotics play a vital role in strengthen this nitrogen fixing bacteria and mycorrhizae microorganisms population which is immensely required for plant wellness.