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Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions
Published on: March 14, 2025
Microbial amelioration of crop salinity stress
Ian C Dodd1, Francisco Pérez-Alfocea
1Lancaster Environment Centre, University of Lancaster, Lancaster, UK. i.dodd@lancaster.ac.uk
Journal of Experimental Botany
|March 10, 2012
Summary
Soil microbes enhance crop salt tolerance by improving nutrient uptake and altering plant hormones. These beneficial microorganisms offer a promising strategy for boosting agricultural productivity in saline environments.
Area of Science:
- Plant Science
- Microbiology
- Agronomy
Background:
- Salinity is a major constraint on crop yields in arid and semi-arid regions.
- Existing knowledge on plant salt tolerance mechanisms has had limited application in crop improvement.
Purpose of the Study:
- To review the beneficial effects of soil biota on plant responses to saline stress.
- To highlight phytohormonal signaling as a key mechanism for improving salt tolerance.
Main Methods:
- Literature review focusing on soil microorganisms (bacteria, mycorrhizal fungi) and their interactions with plants under salinity.
- Analysis of physiological and hormonal changes in plants influenced by soil biota.
Main Results:
- Soil microorganisms improve nutrient and water uptake, promote growth, and alter plant hormonal status.
- Beneficial effects include maintaining homeostasis of toxic ions and enhancing plant nutrition.
- Microbial influence on phytohormones like ethylene, indole-3-acetic acid, and cytokinins is crucial for salt tolerance.
Conclusions:
- Soil biota offer a sustainable strategy for enhancing crop salt tolerance.
- Exploiting soil microorganisms can lead to new approaches for crop improvement in saline conditions.
- Phytohormonal modulation by soil biota is a promising target for developing salt-tolerant crops.
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