Effects of Plant–Microbe Interactions on Crop Stress Resistance

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: 31 August 2026 | Viewed by 849

Special Issue Editors


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Guest Editor
Department for Innovation in Biological, Agri-Food and Forestry Systems, University of Tuscia, Viterbo, Italy
Interests: plant-growth-promoting rhizobacteria; plant–microbe interactions; plant ecophysiology; plant response to abiotic stress; metabolomics; sustainable agriculture

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Guest Editor
Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), University of Tuscia, Viterbo, via Camillo de Lellis, I-01100 Viterbo, VT, Italy
Interests: food biotechnology; microbial methodologies; fermented foods; bioactive compounds; biostimulants; plant growth-promoting bacteria; plant microbiota; food microbiota; quality and sustainability of food systems
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Special Issue Information

Dear Colleagues,

Agricultural systems worldwide are facing escalating pressures from a changing global climate, including increasingly frequent and severe abiotic stresses (drought, salinity, flooding, heat, and wildfires). Simultaneously, biotic challenges posed by evolving pests and diseases continue to threaten crop yields. In recent years, the interactions between plants and beneficial microbes have garnered considerable scientific interest, highlighting the critical role played by these associations in bolstering plant health and enhancing crop tolerance.

This Special Issue aims to showcase research that elucidates the mechanisms by which plant–microbe interactions contribute to enhanced stress resistance in crops (annual, perennial, and agroforestry systems). Contributions employing advanced methodologies (in situ ecological studies, integrated 'omics' approaches, and sophisticated analytical techniques), to unravel the molecular, physiological, and ecological underpinnings of these beneficial interactions, are encouraged.

Potential areas of focus include the following:

Mechanistic Basis of Abiotic and Biotic Stress Tolerance: Molecular, physiological, and/or biochemical mechanisms by which beneficial microbes (plant-growth-promoting rhizobacteria (PGPR), applied as single strains, synthetic communities (SynComs), or microbiomes) confer tolerance to abiotic stresses and modulate defense responses, improving resistance against pathogens and herbivores.

Plant Adaptations to Beneficial Microbial Interactions: Physiological and molecular adaptations induced in host plants by interactions with beneficial microbes that contribute to enhanced stress resistance.

Ecological Dynamics of Plant Microbiota under Stress: Ecological studies that demonstrate shifts in the composition, structure, and functional potential of plant-associated microbiota in plants exhibiting contrasting tolerance responses to stress.

Methodological Advancements in Microbial Applications: Methodologies for the isolation, characterization based on relevant functional traits, and effective application and/or engineering of beneficial microbes.

Translational Research and Field Applications: Successful translation of fundamental laboratory findings to practical and scalable field-level applications, demonstrating enhanced crop stress resistance and yield stability.

We look forward to compiling a Special Issue that significantly advances our understanding of this vital research area.

Dr. Renée Abou Jaoude'
Dr. Maurizio Ruzzi
Guest Editors

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Keywords

  • plant–microbe interactions
  • crop stress resistance
  • abiotic stress resistance
  • biotic stress resistance
  • synthetic biology
  • microbial diversity
  • sustainable agriculture
  • omics approaches

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Published Papers (1 paper)

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Research

19 pages, 1241 KB  
Article
Rhizomicrobiomes from Drought-Adapted Mediterranean Species Differently Alter Leaf Metabolome of Rosmarinus officinalis L. Under Reduced Water Availability
by Renée Abou Jaoudé, Francesca Luziatelli, Anna Grazia Ficca and Maurizio Ruzzi
Plants 2026, 15(4), 529; https://doi.org/10.3390/plants15040529 - 8 Feb 2026
Viewed by 526
Abstract
Rosmarinus officinalis L. is known for its drought tolerance; however, its growth is adversely affected by both mild and severe water stress. This study investigates the potential of rhizomicrobiome (RM) transplantation to strengthen water stress resilience. Three RMs derived from native plants—R. [...] Read more.
Rosmarinus officinalis L. is known for its drought tolerance; however, its growth is adversely affected by both mild and severe water stress. This study investigates the potential of rhizomicrobiome (RM) transplantation to strengthen water stress resilience. Three RMs derived from native plants—R. officinalis (RO), Pistacia lentiscus L. (PL), and Juniperus phoenicea L. (JP)—collected from a semi-arid Mediterranean garrigue were inoculated into R. officinalis subjected to severe drought stress for 30 days. Although RM transplantation did not result in an increase in biomass, it led to the accumulation of intermediates within the phenylpropanoid/coumarin pathway and significant source-specific alterations in other leaf metabolites. Specifically, PL-RM increased the abundance of lignans and stress signaling metabolites. JP-RM improved the root-to-shoot ratio and the sugar and sugar-alcohol accumulation in leaves. Both JP-RM and RO-RM treatments reduced the abundance of abscisic acid, cyclic GMP, and purine recycling pathways. Additionally, RO-RM decreased the abundance of fifteen defense-related metabolites, indicating a direct interference of the inoculum with the plant immune system. In conclusion, these findings suggest that targeted RM manipulation can be an effective strategy to modulate R. officinalis leaf metabolism. Full article
(This article belongs to the Special Issue Effects of Plant–Microbe Interactions on Crop Stress Resistance)
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