Rhizosphere Effectors in Plant–Microbe Interactions

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Plant Microbe Interactions".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 461

Special Issue Editor


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Guest Editor
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
Interests: molecular microbiology; microbial ecology; biotransformation; enzyme enineering; methanotrophy; plant microbiome

Special Issue Information

Dear Colleagues,

Rhizosphere effectors encompass a diverse array of bioactive molecules secreted by soil microbes (bacteria, fungi, archaea), root-exudated metabolites from plants, and artificially amended compounds that mediate dynamic interactions between plant roots and rhizospheric microorganisms. These molecular mediators critically govern metabolic crosstalk at the plant–microbe interface, modulating plant health, soil nutrient cycling, and microbial community assembly. Recent advances have elucidated compositional shifts in rhizosphere microbiomes under host plant selection pressure, with predictive models identifying key taxa responsive to plant genotype, edaphic factors, climate variability, pathogen challenges, and agricultural management. However, critical knowledge gaps persist in elucidating the precise mechanisms through which microbial effectors orchestrate symbiotic, pathogenic, or competitive interactions with host plants. Systematic investigation of rhizosphere effector systems promises to decode the molecular "language" underlying plant–microbe recognition and functional coordination. This Special Issue of Microorganisms seeks to advance our understanding of rhizosphere effectors through multidisciplinary perspectives spanning molecular biology, microbial ecology, and plant physiology. We invite contributions that:

  1. Characterize novel effector molecules influencing plant–microbe dynamics;
  2. Decipher effector-mediated signaling pathways at the cellular or organismal level;
  3. Explore eco-evolutionary patterns of effector systems across environments;
  4. Develop computational models predicting effector-mediated community assembly;
  5. Propose innovative effector-based applications in sustainable agriculture.

Researchers of microbiology, plant sciences, soil biogeochemistry, and agronomy are encouraged to submit original research articles, brief communications, and comprehensive reviews that bridge fundamental discoveries with translational opportunities. This collection aims to establish a mechanistic framework for harnessing rhizosphere effector networks to enhance ecosystem resilience and agricultural productivity.

Prof. Dr. Dongfei Han
Guest Editor

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Keywords

  • plant–microbe interaction
  • innovative effector
  • rhizosphere effector

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Published Papers (1 paper)

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Research

15 pages, 3217 KB  
Article
Halophyte-Specific Rhizosphere Effects Drive the Differentiation of Microbial Community Assembly in a Desert-Grassland Salt Marsh
by Rong Wang, Jinpeng Hu, Jialu Li, Zixuan Chen, Bahetijiang Ayala, Xigang Liu, Peng Kang and Yaqing Pan
Microorganisms 2026, 14(3), 635; https://doi.org/10.3390/microorganisms14030635 - 11 Mar 2026
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Abstract
Arid salt marsh ecosystems endure chronic water scarcity and high salinity stress, with the stability of their functions inextricably linked to the pivotal role of the rhizosphere microenvironment of halophytes. This study focused on three typical halophytes (Kalidium cuspidatum, Nitraria tangutorum, Reaumuria [...] Read more.
Arid salt marsh ecosystems endure chronic water scarcity and high salinity stress, with the stability of their functions inextricably linked to the pivotal role of the rhizosphere microenvironment of halophytes. This study focused on three typical halophytes (Kalidium cuspidatum, Nitraria tangutorum, Reaumuria soongarica) in the Jiantan wetland, and deeply explore how these halophytes differently regulate the soil microenvironment through the rhizosphere effect. The results showed that the rhizosphere soil of Kalidium cuspidatum had higher pH, Na+, and K+ contents, while the rhizosphere soil of R. soongarica had higher total carbon, soil organic carbon, alkali-hydrolyzable nitrogen, and microbial biomass. Microbial community analysis revealed that rhizosphere soil of fungal diversity was significantly higher in K. cuspidatum than in R. soongarica, with distinct differences in bacterial and fungal community structures. These differences were closely associated with factors such as Na+, Olsen phosphorus, microbial biomass carbon and alkali-hydrolyzable nitrogen. Among the dominant phyla, Proteobacteria and Ascomycota predominate, with Desulfobacterota and Mortierellomycota exhibiting the highest explanatory power (>48%) for physicochemical property variations. The microbial network of rhizosphere soil of R. soongarica has the highest complexity (with 633 nodes and 3300 edges), but the proportion of positive correlation edges was the lowest (21.58%). Structural equation modeling indicates that soil physical properties indirectly influence network complexity by negatively regulating chemical properties and microbial biomass, while microbial diversity had a direct positive effect on dominant phylum composition and network complexity. This study elucidated the differentiated adaptive strategies of rhizosphere microenvironment-microbe interactions in halophytes, providing a theoretical basis for wetland ecological restoration. Full article
(This article belongs to the Special Issue Rhizosphere Effectors in Plant–Microbe Interactions)
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