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Plants
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Molecular Biology of Plant–Pathogen Interactions
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Molecular Biology of Plant–Pathogen Interactions

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

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 8433

Special Issue Editor

Dr. Dayong Li

E-Mail Website
Guest Editor
State Key Laboratory of Rice Biology, Hangzhou, China
Interests: molecular mechanisms of plant resistance to important fungal pathogens; identification of key pathogenicity genes in fungi and novel strategies for control of fungal diseases

Special Issue Information

Dear Colleagues,

Plant pathogens are the most diverse and potent biotic agents interacting with plants that cause severe loss for economics and production in agricultural systems. Plant–pathogen interactions are very complicated, as the multifaceted process involves two living organisms: the plant and the pathogen. Plants evolved a two-tiered immune receptor system to recognize and respond to pathogens while pathogens try to counteract the plant’s resistance. In face of this, new strategies of control are needed. Understanding how pathogens employ adaptive strategies and which mechanism plants utilize in controlling their resistance/susceptibility during plant-pathogen interactions will aid in the prevention of disease in plants. This Special Issue on plant–pathogen interactions is focused on recent advances in understanding the molecular and genetic basis of plant defense, pathogenesis, control of plant-pathogen interactions by the environment and suppression or evasion of plant defense responses by pathogens. Topics on molecular evolution and ecology, computational modeling or methodologies that advance our understanding of plant–pathogen interactions are of interest.

In this context, this Special Issue will cover a wide variety of areas, aiming to unravel the complexity of plant–pathogen interactions from several aspects.

Dr. Dayong Li
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. Plants is an international peer-reviewed open access semimonthly 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 2700 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

  • pathogenesis
  • virulence
  • effectors
  • susceptibility genes
  • resistance genes
  • immune response
  • signal transduction molecular mechanism

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Published Papers (3 papers)

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Research

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17 pages, 4542 KiB  
Article
Ubiquitin-Specific Protease 2 (OsUBP2) Negatively Regulates Cell Death and Disease Resistance in Rice
by Ruirui Jiang, Shichen Zhou, Xiaowen Da, Tao Chen, Jiming Xu, Peng Yan and Xiaorong Mo
Plants 2022, 11(19), 2568; https://doi.org/10.3390/plants11192568 - 29 Sep 2022
Cited by 5 | Viewed by 2285
Abstract
Lesion mimic mutants (LMMs) are great materials for studying programmed cell death and immune mechanisms in plants. Various mechanisms are involved in the phenotypes of different LMMs, but few studies have explored the mechanisms linking deubiquitination and LMMs in rice (Oryza sativa [...] Read more.
Lesion mimic mutants (LMMs) are great materials for studying programmed cell death and immune mechanisms in plants. Various mechanisms are involved in the phenotypes of different LMMs, but few studies have explored the mechanisms linking deubiquitination and LMMs in rice (Oryza sativa). Here, we identified a rice LMM, rust spots rice (rsr1), resulting from the mutation of a single recessive gene. This LMM has spontaneous reddish-brown spots on its leaves, and displays enhanced resistance to both fungal leaf blast (caused by Magnaporthe oryzae) and bacterial blight (caused by Xanthomonas oryzae pv. oryzae). Map-based cloning showed that the mutated gene in rsr1 encodes a Ubiquitin-Specific Protease 2 (OsUBP2). The mutation of OsUBP2 was shown to result in reactive oxygen species (ROS) accumulation, chloroplast structural defects, and programmed cell death, while the overexpression of OsUBP2 weakened rice resistance to leaf blast. OsUBP2 is therefore a negative regulator of immune processes and ROS production. OsUBP2 has deubiquitinating enzyme activity in vitro, and the enzyme active site includes a cysteine at the 234th residue. The ubiquitinated proteomics data of rsr1 and WT provide some possible target protein candidates for OsUBP2. Full article
(This article belongs to the Special Issue Molecular Biology of Plant–Pathogen Interactions)
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14 pages, 2067 KiB  
Article
T6SS Accessory Proteins, Including DUF2169 Domain-Containing Protein and Pentapeptide Repeats Protein, Contribute to Bacterial Virulence in T6SS Group_5 of Burkholderia glumae BGR1
by Namgyu Kim, Gil Han, Hyejung Jung, Hyun-Hee Lee, Jungwook Park and Young-Su Seo
Plants 2022, 11(1), 34; https://doi.org/10.3390/plants11010034 - 23 Dec 2021
Cited by 6 | Viewed by 2891
Abstract
Burkholderia glumae are bacteria pathogenic to rice plants that cause a disease called bacterial panicle blight (BPB) in rice panicles. BPB, induced by B. glumae, causes enormous economic losses to the rice agricultural industry. B. glumae also causes bacterial disease in other [...] Read more.
Burkholderia glumae are bacteria pathogenic to rice plants that cause a disease called bacterial panicle blight (BPB) in rice panicles. BPB, induced by B. glumae, causes enormous economic losses to the rice agricultural industry. B. glumae also causes bacterial disease in other crops because it has various virulence factors, such as toxins, proteases, lipases, extracellular polysaccharides, bacterial motility, and bacterial secretion systems. In particular, B. glumae BGR1 harbors type VI secretion system (T6SS) with functionally distinct roles: the prokaryotic targeting system and the eukaryotic targeting system. The functional activity of T6SS requires 13 core components and T6SS accessory proteins, such as adapters containing DUF2169, DUF4123, and DUF1795 domains. There are two genes, bglu_1g23320 and bglu_2g07420, encoding the DUF2169 domain-containing protein in the genome of B. glumae BGR1. bglu_2g07420 belongs to the gene cluster of T6SS group_5 in B. glumae BGR1, whereas bglu_1g23320 does not belong to any T6SS gene cluster in B. glumae BGR1. T6SS group_5 of B. glumae BGR1 is involved in bacterial virulence in rice plants. The DUF2169 domain-containing protein with a single domain can function by itself; however, Δu1g23320 showed no attenuated virulence in rice plants. In contrast, Δu2g07420DUF2169 and Δu2g07420PPR did exhibit attenuated virulence in rice plants. These results suggest that the pentapeptide repeats region of the C-terminal additional domain, as well as the DUF2169 domain, is required for complete functioning of the DUF2169 domain-containing protein encoded by bglu_2g07420. bglu_2g07410, which encodes the pentapeptide repeats protein, composed of only the pentapeptide repeats region, is located downstream of bglu_2g07420. Δu2g07410 also shows attenuated virulence in rice plants. This finding suggests that the pentapeptide repeats protein, encoded by bglu_2g07410, is involved in bacterial virulence. This study is the first report that the DUF2169 domain-containing protein and pentapeptide repeats protein are involved in bacterial virulence to the rice plants as T6SS accessory proteins, encoded in the gene cluster of the T6SS group_5. Full article
(This article belongs to the Special Issue Molecular Biology of Plant–Pathogen Interactions)
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Review

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19 pages, 686 KiB  
Review
Distinct Mechanisms of Endomembrane Reorganization Determine Dissimilar Transport Pathways in Plant RNA Viruses
by Andrey G. Solovyev, Anastasia K. Atabekova, Alexander A. Lezzhov, Anna D. Solovieva, Denis A. Chergintsev and Sergey Y. Morozov
Plants 2022, 11(18), 2403; https://doi.org/10.3390/plants11182403 - 15 Sep 2022
Cited by 13 | Viewed by 2330
Abstract
Plant viruses exploit the endomembrane system of infected cells for their replication and cell-to-cell transport. The replication of viral RNA genomes occurs in the cytoplasm in association with reorganized endomembrane compartments induced by virus-encoded proteins and is coupled with the virus intercellular transport [...] Read more.
Plant viruses exploit the endomembrane system of infected cells for their replication and cell-to-cell transport. The replication of viral RNA genomes occurs in the cytoplasm in association with reorganized endomembrane compartments induced by virus-encoded proteins and is coupled with the virus intercellular transport via plasmodesmata that connect neighboring cells in plant tissues. The transport of virus genomes to and through plasmodesmata requires virus-encoded movement proteins (MPs). Distantly related plant viruses encode different MP sets, or virus transport systems, which vary in the number of MPs and their properties, suggesting their functional differences. Here, we discuss two distinct virus transport pathways based on either the modification of the endoplasmic reticulum tubules or the formation of motile vesicles detached from the endoplasmic reticulum and targeted to endosomes. The viruses with the movement proteins encoded by the triple gene block exemplify the first, and the potyviral system is the example of the second type. These transport systems use unrelated mechanisms of endomembrane reorganization. We emphasize that the mode of virus interaction with cell endomembranes determines the mechanism of plant virus cell-to-cell transport. Full article
(This article belongs to the Special Issue Molecular Biology of Plant–Pathogen Interactions)
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