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Microorganisms in Agriculture and Food industry

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Updated: Aug 13, 2025

Inoculation Strategies to Infect Plant Roots with Soil-Borne Microorganisms

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Published on: March 1, 2022

Microbial Inoculants as Plant Biostimulants: A Review on Risk Status.

Menka Kumari¹, Preeti Swarupa², Kavindra Kumar Kesari^3,4

¹Department of Life Sciences, School of Natural Sciences, Central University of Jharkhand Cheri-Manatu, Kamre, Kanke, Rachi 835222, India.

Life (Basel, Switzerland)

|January 21, 2023

Summary

Plant biostimulants offer an eco-friendly approach to enhance crop productivity and soil health. However, this review highlights concerns regarding the potential health risks associated with certain microbial plant biostimulants.

Keywords:

biofertilizers biostimulants phytostimulator rhizosphere soil microorganisms

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Area of Science:

Agricultural Science
Microbiology
Environmental Science

Background:

Modern agriculture relies heavily on agrochemicals, leading to soil degradation and plant toxicity.
Plant biostimulants present a sustainable alternative, promoting plant growth and improving soil fertility.
These biostimulants enhance nutrient uptake and stress tolerance, positively impacting the entire crop lifecycle.

Purpose of the Study:

To review the role of plant biostimulants in sustainable agriculture.
To investigate the characterization and potential risks of microbial plant biostimulants.
To emphasize the safe application of biostimulants in agricultural practices.

Main Methods:

Literature review focusing on microbial plant biostimulants.
Analysis of scientific literature on the effects of biostimulants on plant growth and soil health.
Examination of the pathogenic potential of microbial biostimulants related to human pathogens.

Main Results:

Plant biostimulants improve crop yield, nutrient use efficiency, and soil microbial activity.
Certain microbial biostimulants are closely related to human pathogens (e.g., Pseudomonas, Klebsiella).
These microbes can cause various infections, raising concerns about their agricultural application.

Conclusions:

Plant biostimulants are crucial for sustainable agriculture, offering environmental and crop benefits.
A thorough risk assessment of microbial plant biostimulants is necessary for safe and legalized application.
Further research is needed to ensure the safety and efficacy of biostimulants in agricultural systems.