Nematophagous Fungi

A special issue of Pathogens (ISSN 2076-0817). This special issue belongs to the section "Fungal Pathogens".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1434

Special Issue Editors

1. State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, China
2. Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming 650091, China
Interests: interaction between nematophagous fungi and nematodes; microbiology; molecular biology; fungi; nematodes

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Guest Editor
School of Life Sciences, Anhui University, Hefei, China
Interests: nematophagous fungus; gut microbiota; Arthrobotrys oligospora

Special Issue Information

Dear Colleagues,

In recent decades, significant concerns have emerged about the biological control potential of nematophagous fungi against nematode pests. Usually, this fungal group grows saprophytic fungi and will enter parasitic growth under the influence of nutrient starvation or nematodes. Their vegetative mycelia can be modified into trapping organs that capture and digest nematode preys. Around 160 species have been identified so far, and an increasing number of scientists have grown interested in developing environmentally friendly biological control agents to control the population of plant parasitic nematodes. However, the practical application of these nematophagous microorganisms is still limited, partly due to their relatively low effectiveness and inconsistency in agricultural and forest environments. Additionally, the diversity of trapping structures allows these organisms to elucidate the evolution complications and elaborateness of different cell types in the presence of nematodes. To date, studies using Arthrobotrys oligospora and Arthrobotrys flagrans as models of nematophagous fungi have identified pathways associated with autophagy, endocytosis, G-protein signaling, ubiquitination, and other pathways implicated in the regulation of lifestyle changes in these fungi.  

The Special Issue will cover a variety of topics relating to lifecycle transitions, biological control, and infection mechanisms, as well as interactions with nematode populations. We aim to help to enhance current knowledge in this field. All types of articles will be considered for publication, including short reports, primary research articles, and reviews. 

We look forward to your contributions.

Dr. Xin Wang
Prof. Dr. Yongzhong Wang
Guest Editors

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Keywords

  • nematophagous fungi
  • nematode pests
  • saprophytic fungi
  • plant parasitic nematodes
  • nematophagous microorganisms
  • Arthrobotrys oligospora
  • Arthrobotrys flagrans

Published Papers (1 paper)

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Research

11 pages, 3378 KiB  
Article
Ammonia and Nematode Ascaroside Are Synergistic in Trap Formation in Arthrobotrys oligospora
by Jinrong Huang, Xi Zheng, Mengqing Tian and Keqin Zhang
Pathogens 2023, 12(9), 1114; https://doi.org/10.3390/pathogens12091114 - 31 Aug 2023
Viewed by 845
Abstract
Nematode-trapping (NT) fungi are natural predators of the soil living nematodes. Diverse external signals mediate the generation of predatory devices of NT fungi. Among these, broad ascarosides and nitrogenous ammonia are highly efficient inducers for trap structure initiation. However, the overlay effect of [...] Read more.
Nematode-trapping (NT) fungi are natural predators of the soil living nematodes. Diverse external signals mediate the generation of predatory devices of NT fungi. Among these, broad ascarosides and nitrogenous ammonia are highly efficient inducers for trap structure initiation. However, the overlay effect of ammonia and ascaroside on the trap morphogenesis remains unclear. This study demonstrated that the combination of nitrogenous substances with nematode-derived ascarosides led to higher trap production compared to the single inducing cues; notably, ammonia and Ascr#18 had the most synergistic effect on the trap in A. oligospora. Further, the deletion of ammonia transceptor Amt43 blocked trap formation against ammonia addition in A. oligospora but not for the ascaroside Ascr#18 induction. Moreover, ammonia addition could promote plasma endocytosis in the process of trap formation. In contrast, ascaroside addition would facilitate the stability of intracellular organization away from endocytosis. Therefore, there is a synergistic effect on trap induction from different nitrogenous and ascaroside signals. Full article
(This article belongs to the Special Issue Nematophagous Fungi)
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