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Plants
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Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation
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Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation

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 2024) | Viewed by 5518

Special Issue Editor

Dr. Hansong Dong

E-Mail Website
Guest Editor
College of Plant Protection and State Key Laboratory of Crop Biology, Shandong Agricultural University, Taian 271018, China
Interests: plant growth and defense signaling; wheat and rice defenses against pathogens and aphids

Special Issue Information

Dear Colleagues,

Plant‒pathogen molecular interactions are an essential step toward the activation of immunity mechanisms and repertoires of defense responses in plants, along with pathogenicity deployment and the virulent performance of pathogens. The presently existent molecular interactions and immune mechanisms appear because of historical plant‒pathogen coevolution. This has been canonically elucidated as the zig-zag model, in which multiple immunity mechanisms including pattern- and effector-triggered immunity interact to enhance plant resistance against diseases.

In recent years, scientific and technological advances have enabled the identification and characterization of various genes and proteins involved in plant‒pathogen interactions. This has led to the development of new approaches for controlling plant diseases, such as the use of genetically modified crops with enhanced disease resistance or the development of novel biocontrol agents. The agricultural implementation of these findings has been significant not only for disease control but also for the energetic demands of plant growth and defense. Thus, understanding the mechanisms and evolution of plant‒pathogen interactions is critical for developing effective agricultural strategies that minimize crop losses and maximize yields.

We invite submissions of original research articles and reviews on plant‒pathogen molecular interactions, with a focus on evolutionary and mechanistic aspects, as well as their implications for agriculture.

Dr. Hansong Dong
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.

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Published Papers (4 papers)

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Research

10 pages, 2422 KiB  
Article
The Functional Characterization of MaGS2 and Its Role as a Negative Regulator of Ciboria shiraiana
by Keermula Yidilisi, Yuqiong Wang, Zixuan Guo, Yangyang Guo, Xiaoru Kang, Shan Li, Wenhao Zhang, Nan Chao and Li Liu
Plants 2024, 13(12), 1660; https://doi.org/10.3390/plants13121660 - 15 Jun 2024
Viewed by 630
Abstract
Glutamine synthetase (GS) is a key enzyme involved in nitrogen metabolism. GS can be divided into cytosolic and plastidic subtypes and has been reported to respond to various biotic and abiotic stresses. However, little research has been reported on the function of GS [...] Read more.
Glutamine synthetase (GS) is a key enzyme involved in nitrogen metabolism. GS can be divided into cytosolic and plastidic subtypes and has been reported to respond to various biotic and abiotic stresses. However, little research has been reported on the function of GS in mulberry. In this study, the full length of MaGS2 was cloned, resulting in 1302 bp encoding 433 amino acid residues. MaGS2 carried the typical GS2 motifs and clustered with plastidic-subtype GSs in the phylogenetic analysis. MaGS2 localized in chloroplasts, demonstrating that MaGS2 is a plastidic GS. The expression profile showed that MaGS2 is highly expressed in sclerotiniose pathogen-infected fruit and sclerotiniose-resistant fruit, demonstrating that MaGS2 is associated with the response to sclerotiniose in mulberry. Furthermore, the overexpression of MaGS2 in tobacco decreased the resistance against Ciboria shiraiana, and the knockdown of MaGS2 in mulberry by VIGS increased the resistance against C. shiraiana, demonstrating the role of MaGS2 as a negative regulator of mulberry resistance to C. shiraiana infection. Full article
(This article belongs to the Special Issue Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation)
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16 pages, 12466 KiB  
Article
AtPIP1;4 and AtPIP2;4 Cooperatively Mediate H2O2 Transport to Regulate Plant Growth and Disease Resistance
by Xiaohui Yao, Yanjie Mu, Liyuan Zhang, Lei Chen, Shenshen Zou, Xiaochen Chen, Kai Lu and Hansong Dong
Plants 2024, 13(7), 1018; https://doi.org/10.3390/plants13071018 - 3 Apr 2024
Viewed by 1278
Abstract
The rapid production of hydrogen peroxide (H2O2) is a hallmark of plants’ successful recognition of pathogen infection and plays a crucial role in innate immune signaling. Aquaporins (AQPs) are membrane channels that facilitate the transport of small molecular compounds [...] Read more.
The rapid production of hydrogen peroxide (H2O2) is a hallmark of plants’ successful recognition of pathogen infection and plays a crucial role in innate immune signaling. Aquaporins (AQPs) are membrane channels that facilitate the transport of small molecular compounds across cell membranes. In plants, AQPs from the plasma membrane intrinsic protein (PIP) family are utilized for the transport of H2O2, thereby regulating various biological processes. Plants contain two PIP families, PIP1s and PIP2s. However, the specific functions and relationships between these subfamilies in plant growth and immunity remain largely unknown. In this study, we explore the synergistic role of AtPIP1;4 and AtPIP2;4 in regulating plant growth and disease resistance in Arabidopsis. We found that in plant cells treated with H2O2, AtPIP1;4 and AtPIP2;4 act as facilitators of H2O2 across membranes and the translocation of externally applied H2O2 from the apoplast to the cytoplasm. Moreover, AtPIP1;4 and AtPIP2;4 collaborate to transport bacterial pathogens and flg22-induced apoplastic H2O2 into the cytoplasm, leading to increased callose deposition and enhanced defense gene expression to strengthen immunity. These findings suggest that AtPIP1;4 and AtPIP2;4 cooperatively mediate H2O2 transport to regulate plant growth and immunity. Full article
(This article belongs to the Special Issue Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation)
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17 pages, 8531 KiB  
Article
Antibacterial Activity and Mechanism of Three Root Exudates from Mulberry Seedlings against Ralstonia pseudosolanacearum
by Ping Li, Siyi Wang, Mengyuan Liu, Xue Dai, Huicong Shi, Weihong Zhou, Sheng Sheng and Fuan Wu
Plants 2024, 13(4), 482; https://doi.org/10.3390/plants13040482 - 8 Feb 2024
Viewed by 1650
Abstract
Bacterial wilt is a significant soil-borne disease that poses a threat to mulberry production yield and quality of agricultural production worldwide. However, the disease resistance mechanisms dependent on root exudates are not well understood. In this present study, we investigated the antibacterial mechanisms [...] Read more.
Bacterial wilt is a significant soil-borne disease that poses a threat to mulberry production yield and quality of agricultural production worldwide. However, the disease resistance mechanisms dependent on root exudates are not well understood. In this present study, we investigated the antibacterial mechanisms of the main active substances (erucamide, oleamide, and camphor bromide) present in mulberry root exudates (MRE) against Ralstonia pseudosolanacearum (Rp), the causal agent of bacterial wilt. Our findings revealed that these three active substances inhibited the growth activity of Rp by affecting the cell morphology and extracellular polysaccharide content, as well as triggering a burst of reactive oxygen species. The active substances induced oxidative stress, leading to a decrease in Rp growth. Additionally, the expression levels of key genes in the hrp gene cluster (hrpB, hrpX, and hrpF) and other virulence-related genes (such as ripAW, ripAE, Rs5-4819, Rs5-4374, ace, egl3, and pehB) were significantly reduced upon treatment with the active substances. Further pathogenicity experiments demonstrated that root exudates (at a concentration of 1.5 mg·mL−1) delayed or slowed down the occurrence of bacterial wilt in mulberry. These findings provide valuable insight into the antimicrobial mechanisms of MRE against Rp and lay a theoretical foundation for the development and application of biocontrol agents to control mulberry bacterial wilt. Full article
(This article belongs to the Special Issue Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation)
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15 pages, 3305 KiB  
Article
Nitrile-Specific Protein NSP2 and Its Interacting Protein MPK3 Synergistically Regulate Plant Disease Resistance in Arabidopsis
by Tingting Zhai, Jun Teng, Xintong Fan, Shaowei Yu, Chen Wang, Xingqi Guo, Wei Yang and Shuxin Zhang
Plants 2023, 12(15), 2857; https://doi.org/10.3390/plants12152857 - 3 Aug 2023
Cited by 1 | Viewed by 1172
Abstract
Glucosinolates and their degradation products have a wide range of actions and are important components of plant defense. NSP2 (nitrile-specific protein 2) is a key regulator in the breakdown process of glucosinolates. However, the precise function of NSP2 in plant disease resistance beyond [...] Read more.
Glucosinolates and their degradation products have a wide range of actions and are important components of plant defense. NSP2 (nitrile-specific protein 2) is a key regulator in the breakdown process of glucosinolates. However, the precise function of NSP2 in plant disease resistance beyond its role in glucosinolate degradation is still unclear. In this study, we discovered that NSP2 which was induced by Pst DC3000, influenced PR genes expression and reactive oxygen burst. Additionally, omics analysis revealed that NSP2 was engaged in plant-pathogen interaction and several hormone signal transduction pathways. Furthermore, immunoprecipitation-tandem mass spectrometry analysis (IP-MS), bimolecular fluorescence complementation (BiFC), and co-immunoprecipitation demonstrated that NSP2 interacts with MPK3. Genetic analysis shows that NSP2 may be a function downstream of MPK3. Upon pathogen inoculation, NSP2 protein levels increase while MPK3 protein levels decrease. Moreover, the level of phosphorylated NSP2 decreases. Taken together, this study sheds light on a new mode of synergistic action between NSP2 and MPK3 in the disease resistance process. Full article
(This article belongs to the Special Issue Plant-Pathogen Molecular Interactions: Evolution, Mechanisms and Agricultural Implementation)
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