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Agronomy
Special Issues
The Mechanism of Pathogen Infection and Defense in Crops
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The Mechanism of Pathogen Infection and Defense in Crops

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Pest and Disease Management".

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 945

Special Issue Editor

Prof. Dr. Guodong Lu

E-Mail Website
Guest Editor
College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
Interests: molecular plant pathology and fungal genetics; molecular interaction between rice and Magnaporthe oryzae
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fungal pathogens in crops pose annual threats to global food security as they cause severe and often fatal diseases in crops that result in significant yield reductions and economic losses. Phytopathogenic fungi cause different symptoms (i.e., leaf spots, blights, rust, canker, vascular wilt, root rot, etc.) due to their varied molecular mechanisms, such as toxin and small-effector protein injection. However, many details of infection and plant defense against fungal infection remain unclear. The advancements in genomics and biotechnological tools achieved in recent years have enabled fast-paced research in this field, in turn revealing more molecular details and mechanisms underlying many such crop plant–pathogen interactions. This Special Issue will cover a range of recent advances in crop plant–pathogen interactions at the molecular level and cutting-edge methods of crop fungal disease control. We welcome all relevant molecular and genomic original research and review articles targeting either model plant–pathogen interactions or interactions between crops and pathogens that cause devastating damage.

Prof. Dr. Guodong Lu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • crops
  • crop protection
  • plant–pathogen interaction
  • plant immunity
  • virulence
  • effectors
  • PAMP-triggered immunity (PTI)
  • effector-triggered immunity (ETI)

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Published Papers (1 paper)

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Research

16 pages, 5107 KiB  
Article
The Identification of a Unique Gene MoUNG Required for Growth, Conidiation, and Pathogenicity in Magnaporthe oryzae Through T-DNA Insertion Mutagenesis
by Jing Chen, Qingfeng He, Xuze Xie, Yuting Wu, Shan Liu, Xihong Li, Xianfeng Yi, Dan Zhang, Stefan Olsson, Guodong Lu, Zonghua Wang, Youjian Zhang, Meizhen Lin and Ya Li
Agronomy 2025, 15(2), 298; https://doi.org/10.3390/agronomy15020298 - 25 Jan 2025
Viewed by 602
Abstract
Unique genes refer to genes specific to a particular organism and play crucial roles in the biological functions, evolutionary processes, and adaptations to external environments. However, the roles of unique genes in plant pathogenic fungi remain largely unexplored. In this study, we identified [...] Read more.
Unique genes refer to genes specific to a particular organism and play crucial roles in the biological functions, evolutionary processes, and adaptations to external environments. However, the roles of unique genes in plant pathogenic fungi remain largely unexplored. In this study, we identified a novel unique gene in the rice blast fungus Magnaporthe oryzae, named MoUNG (M. oryzae unique gene), through T-DNA insertion mutagenesis. The disruption of the MoUNG promoter region in the T-DNA insertion mutant (T30-104) led to an almost loss of MoUNG expression. MoUNG has no functional domains and lacks homologues in other organism. It is highly expressed during the early-infection stage between 16 and 32 h post-inoculation (HPI), in contrast to its expression in mycelia and at the later infection stage of 48 HPI. Notably, attempts to knock out MoUNG were unsuccessful, so we examined the T30-104 mutant and found it showed significantly reduced growth, conidiation, and pathogenicity. Introducing the full-length MoUNG with its promoter into T30-104 restored these phenotypic defects. Additionally, subcellular localization assays revealed that MoUNG exhibits a dot-like distribution within the cytoplasm of mycelium, conidium, appressorium, and invasive hypha. Furthermore, knock-down of MoUNG produced results similar to those observed with the insertion mutation. In conclusion, we identified a novel unique gene MoUNG in M. oryzae and demonstrated its involvement in growth, conidiation, and pathogenicity. Full article
(This article belongs to the Special Issue The Mechanism of Pathogen Infection and Defense in Crops)
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