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Background and Aims <p>Drought accounts for the primary abiotic stress factor in limiting crop productivity in terrestrial ecosystems. Plant rhizosphere is the&#xa0;key networks for interactions between different beneficial microorganisms, which are helpful for better coping with drought stress.&#xa0;Arbuscular mycorrhizal fungi (AMF) are found to be one of the most important plant growth promoting fungi, play an important role in&#xa0;alleviation of drought stress. Among other factors involved in plant acclimation to drought, phytohormones could be considered as&#xa0;key modulators. Recently, many studies emphasizing the importance of plant hormones on stress alleviation and mycorrhizal&#xa0;colonization. The present review appraises the essential mechanisms posed by various plant hormones such as indole-3-acetic acid&#xa0;(IAA), cytokinins (CKs), gibberellins (GAs), abscisic acid (ABA), jasmonate (JA), and strigolactones (SLs) accumulation in AMF&#xa0;inoculated plants under drought stress.</p> Results <p>The present review summarizes the importance of holistic interplay between AMF symbiosis, phytohormones, signalling pathways,&#xa0;and molecular regulatory mechanisms involved in enhancing phytohormones signalling against drought stress tolerance in plants.&#xa0;Further, the following key questions are addressed. (1) Why ABA expression levels are different between the mycorrhizal plants and&#xa0;the non-mycorrhizal ones? (2) How do AM fungi, plant and plant hormones collectively contribute to drought stress management? (3)&#xa0;What is the importance of hormonal crosstalk in AMF symbiosis mediated drought stress mitigation?</p> Conclusion <p>In addition, the hypothetical implications are affirmative for future thrust and phytohormonal values concerned to AMF symbiosis and&#xa0;drought stress alleviation. Moreover, genetic, proteomic and signalling cascades involved in drought stress is fostered for&#xa0;comprehending AMF-coupled hormonal interplay.</p>

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Arbuscular mycorrhizal fungi mediated hormonal interplay under drought stress conditions: current insights and future directions

  • 期刊论文

  • 发表日期：

    2025年10月9日

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  • Murugesan Chandrasekaran,
  • Thangaraj Ponmani,
  • Sajjad Ahmad

摘要

Background and Aims

Drought accounts for the primary abiotic stress factor in limiting crop productivity in terrestrial ecosystems. Plant rhizosphere is the key networks for interactions between different beneficial microorganisms, which are helpful for better coping with drought stress. Arbuscular mycorrhizal fungi (AMF) are found to be one of the most important plant growth promoting fungi, play an important role in alleviation of drought stress. Among other factors involved in plant acclimation to drought, phytohormones could be considered as key modulators. Recently, many studies emphasizing the importance of plant hormones on stress alleviation and mycorrhizal colonization. The present review appraises the essential mechanisms posed by various plant hormones such as indole-3-acetic acid (IAA), cytokinins (CKs), gibberellins (GAs), abscisic acid (ABA), jasmonate (JA), and strigolactones (SLs) accumulation in AMF inoculated plants under drought stress.

Results

The present review summarizes the importance of holistic interplay between AMF symbiosis, phytohormones, signalling pathways, and molecular regulatory mechanisms involved in enhancing phytohormones signalling against drought stress tolerance in plants. Further, the following key questions are addressed. (1) Why ABA expression levels are different between the mycorrhizal plants and the non-mycorrhizal ones? (2) How do AM fungi, plant and plant hormones collectively contribute to drought stress management? (3) What is the importance of hormonal crosstalk in AMF symbiosis mediated drought stress mitigation?

Conclusion

In addition, the hypothetical implications are affirmative for future thrust and phytohormonal values concerned to AMF symbiosis and drought stress alleviation. Moreover, genetic, proteomic and signalling cascades involved in drought stress is fostered for comprehending AMF-coupled hormonal interplay.