Fungal–Plant Interactions: From Symbiosis to Pathogenesis

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 971

Special Issue Editors


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Guest Editor
Department of Mycology and Genetics, Institute of Genetics and Microbiology, University of Wrocław, Przybyszewskiego Str. 63/77, 51-148 Wrocław, Poland
Interests: fungal–plant interactions; yeasts; biofilm; antimicrobials; microbial forensics
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Mycology and Genetics, University of Wrocław, ul. S. Przybyszewskiego 63/77, 51-148 Wrocław, Poland
Interests: mycology; speleomycology; phytopathology; plant–fungal interactions; antifungal agents; molecular biology; agriculture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fungal–plant interactions span a continuum from mutualism to disease. Symbiotic fungi, such as mycorrhizae and endophytes, enhance nutrient uptake, stress tolerance, and immunity. In contrast, pathogenic fungi deploy effectors and suppress host defenses to colonize and damage plants. Some fungi exhibit lifestyle plasticity, shifting between symbiosis and pathogenesis depending on environmental and host cues. Advances in omics technologies have deepened our understanding of the molecular mechanisms driving these interactions. Exploring this dynamic relationship is vital for improving crop resilience, managing plant diseases, and leveraging beneficial fungi for sustainable agriculture in changing environments. This Special Issue, title “Fungal–Plant Interactions: From Symbiosis to Pathogenesis”, seeks to advance knowledge of fungal–plant associations through original studies addressing the full spectrum of mutualistic to parasitic dynamics.

Dr. Agata Piecuch
Dr. Rafał Ogórek
Guest Editors

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Keywords

  • fungal–plant associations
  • symbiosis
  • pathogenesis
  • mycorrhiza
  • endophytes
  • plant immunity
  • host–pathogen interactions

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Published Papers (1 paper)

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Research

16 pages, 7449 KB  
Article
Silencing of the Mycorrhiza-Inducible Phosphate Transporter TaPT3-2D in Wheat Enhances Pathogen Susceptibility and Impairs Arbuscular Mycorrhizal Symbiosis
by Yi Zhang, Danfeng Wang, Yuchen Ma, Xueqing Wang, Kedong Xu, Xiaoli Li, Xinxin Shangguan, Haohao Cao, Guozhang Kang and Chengwei Li
Plants 2026, 15(1), 118; https://doi.org/10.3390/plants15010118 - 1 Jan 2026
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Abstract
The interplay between phosphate (Pi) signaling and defense pathways is crucial for plant fitness, yet its molecular basis, particularly in wheat, remains poorly understood. Here, we functionally characterized the plasma membrane-localized high-affinity phosphate transporter TaPT3-2D and demonstrated its essential roles in Pi uptake, [...] Read more.
The interplay between phosphate (Pi) signaling and defense pathways is crucial for plant fitness, yet its molecular basis, particularly in wheat, remains poorly understood. Here, we functionally characterized the plasma membrane-localized high-affinity phosphate transporter TaPT3-2D and demonstrated its essential roles in Pi uptake, arbuscular mycorrhizal (AM) symbiosis, and fungal disease resistance. Quantitative analyses showed that TaPT3-2D expression was strongly induced by AM colonization (165-fold increase) and by infection with Bipolaris sorokiniana (54-fold increase) and Gaeumannomyces tritici (15-fold increase). In contrast, virus-induced gene silencing (VIGS) of TaPT3-2D reduced Pi uptake and mycorrhizal colonization. Moreover, TaPT3-2D-silenced plants exhibited increased susceptibility to biotrophic, hemibiotrophic, and necrotrophic fungi, accompanied by reduced expression of pathogen-related genes. The simultaneous impairment of Pi uptake, AM symbiosis, and defense responses in silenced plants indicates that TaPT3-2D functionally couples these processes. Functional complementation assays in low-Pi medium further revealed that TaPT3-2D partially rescued defective Pi uptake in mutant MB192 yeast, supporting its role as a high-affinity phosphate transporter. Collectively, these results identify TaPT3-2D as both a key regulator of individual pathways and as a molecular link connecting Pi homeostasis, symbiotic signaling, and disease resistance in wheat. Full article
(This article belongs to the Special Issue Fungal–Plant Interactions: From Symbiosis to Pathogenesis)
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