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New Horizons in Plant–Microbe Interactions
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New Horizons in Plant–Microbe 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 2024) | Viewed by 11465

Special Issue Editors

Dr. Martin Černý

E-Mail Website
Guest Editor
Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, 61300 Brno, Czech Republic
Interests: plant omics (proteomics, metabolomics, interactomics); phytohormones; plant biotic interactions and abiotic stress response
Dr. Veronika Hyskova

E-Mail Website
Guest Editor
Department of Biochemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic
Interests: plant enzymology; enzyme kinetics; plant stress; NADP-malic enzyme; shikimate dehydrogenase

Special Issue Information

Dear Colleagues,

We invite you to join our SI on plant–microbe interaction research. 

Plants interact and cope with many different organisms, and these biotic interactions shape their growth and development. Some of these interactions are beneficial and provide an advantage, including nitrogen fixation via symbiotic associations with bacteria or nutrient supply via mycorrhiza formation. Pests and pathogens are negative factors for crop production, but present selective pressure on plant societies and could be beneficial in limiting the spread of individual species. Furthermore, mild biotic stress could promote resilience and acclimatize plants to unfavorable conditions. All of these aspects are underlined by complex molecular mechanisms that are far from being fully understood. 

This Special Issue aims to collect new findings in the field of plant–microbe interactions, including but not limited to the following aspects:

  • Molecular mechanisms of plant–microbe interactions;
  • Phytohormones and other secondary metabolites in plant–microbe interactions;
  • Biological control and methods to promote plant resilience through interaction with beneficial microbes ;
  • Novel tools in breeding pathogen-resilient cultivars;
  • Omics analyses to understand plant–microbe interactions, including transcriptomics, proteomics, metabolomics, lipidomics, and volatolomics studies.

We welcome both reviews and research articles.

Dr. Martin Černý
Dr. Veronika Hyskova
Guest Editors

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

  • microbe
  • biotic stress
  • biotic interaction
  • biological control
  • molecular mechanisms
  • resilience
  • tolerance
  • omics
  • lipidome
  • proteome
  • metabolome
  • transcriptome
  • volatiles
  • phytohormones
  • plant immunity

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (6 papers)

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Editorial

Jump to: Research, Review

3 pages, 610 KiB  
Editorial
New Horizons in Plant–Microbe Interactions
by Martin Cerny and Veronika Hýsková
Plants 2024, 13(21), 2968; https://doi.org/10.3390/plants13212968 - 24 Oct 2024
Viewed by 778
Abstract
Theophrastus, an ancient Greek philosopher known as the “Father of Botany,” was among the first to document plant diseases, establishing an understanding of plant biotic interactions some 2300 years ago [...] Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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Research

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16 pages, 1477 KiB  
Article
Stimulation of Arabidopsis thaliana Seed Germination at Suboptimal Temperatures through Biopriming with Biofilm-Forming PGPR Pseudomonas putida KT2440
by Chandana Pandey, Anna Christensen, Martin N. P. B. Jensen, Emilie Rose Rechnagel, Katja Gram and Thomas Roitsch
Plants 2024, 13(19), 2681; https://doi.org/10.3390/plants13192681 - 24 Sep 2024
Cited by 2 | Viewed by 1626
Abstract
This study investigated the germination response to temperature of seeds of nine Arabidopsis thaliana ecotypes. They are characterized by a similar temperature dependency of seed germination, and 10 °C and 29 °C were found to be suboptimal low and high temperatures for all [...] Read more.
This study investigated the germination response to temperature of seeds of nine Arabidopsis thaliana ecotypes. They are characterized by a similar temperature dependency of seed germination, and 10 °C and 29 °C were found to be suboptimal low and high temperatures for all nine ecotypes, even though they originated from regions with diverse climates. We tested the potential of four PGPR strains from the genera Pseudomonas and Bacillus to stimulate seed germination in the two ecotypes under these suboptimal conditions. Biopriming of seeds with only the biofilm-forming strain Pseudomonas putida KT2440 significantly increased the germination of Cape Verde Islands (Cvi-0) seeds at 10 °C. However, biopriming did not significantly improve the germination of seeds of the widely utilized ecotype Columbia 0 (Col-0) at any of the two tested temperatures. To functionally investigate the role of KT2440’s biofilm formation in the stimulation of seed germination, we used mutants with compromised biofilm-forming abilities. These bacterial mutants had a reduced ability to stimulate the germination of Cvi-0 seeds compared to wild-type KT2440, highlighting the importance of biofilm formation in promoting germination. These findings highlight the potential of PGPR-based biopriming for enhancing seed germination at low temperatures. Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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15 pages, 2932 KiB  
Article
Bidirectional Comparisons Revealed Functional Patterns in Interaction between Salmonella enterica and Plants
by Min Han, Azhar A. Zarkani, Yongming Duan, Maja Grimm, Jérôme Trotereau, Isabelle Virlogeux-Payant and Adam Schikora
Plants 2024, 13(3), 414; https://doi.org/10.3390/plants13030414 - 30 Jan 2024
Cited by 1 | Viewed by 1633
Abstract
Plants may harbor the human pathogen Salmonella enterica. Interactions between S. enterica and different plant species have been studied in individual reports. However, disparities arising from the distinct experimental conditions may render a meaningful comparison very difficult. This study explored interaction [...] Read more.
Plants may harbor the human pathogen Salmonella enterica. Interactions between S. enterica and different plant species have been studied in individual reports. However, disparities arising from the distinct experimental conditions may render a meaningful comparison very difficult. This study explored interaction patterns between different S. enterica strains including serovars Typhimurium 14028s and LT2 and serovar Senftenberg, and different plants (Arabidopsis, lettuce, and tomato) in one approach. Better persistence of S. enterica serovar Typhimurium strains was observed in all tested plants, whereas the resulting symptoms varied depending on plant species. Genes encoding pathogenesis-related proteins were upregulated in plants inoculated with Salmonella. Furthermore, transcriptome of tomato indicated dynamic responses to Salmonella, with strong and specific responses already 24 h after inoculation. By comparing with publicly accessible Arabidopsis and lettuce transcriptome results generated in a similar manner, constants and variables were displayed. Plants responded to Salmonella with metabolic and physiological adjustments, albeit with variability in reprogrammed orthologues. At the same time, Salmonella adapted to plant leaf-mimicking media with changes in biosynthesis of cellular components and adjusted metabolism. This study provides insights into the Salmonella-plant interaction, allowing for a direct comparison of responses and adaptations in both organisms. Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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23 pages, 7105 KiB  
Article
Impact of Susceptibility on Plant Hormonal Composition during Clubroot Disease Development in Canola (Brassica napus)
by Charitha P. A. Jayasinghege, Jocelyn A. Ozga, Victor P. Manolii, Sheau-Fang Hwang and Stephen E. Strelkov
Plants 2023, 12(16), 2899; https://doi.org/10.3390/plants12162899 - 9 Aug 2023
Cited by 4 | Viewed by 2015
Abstract
Clubroot, caused by Plasmodiophora brassicae, is a soilborne disease of crucifers associated with the formation of large root galls. This root enlargement suggests modulation of plant hormonal networks by the pathogen, stimulating cell division and elongation and influencing host defense. We studied [...] Read more.
Clubroot, caused by Plasmodiophora brassicae, is a soilborne disease of crucifers associated with the formation of large root galls. This root enlargement suggests modulation of plant hormonal networks by the pathogen, stimulating cell division and elongation and influencing host defense. We studied physiological changes in two Brassica napus cultivars, including plant hormone profiles—salicylic acid (SA), jasmonic acid (JA), abscisic acid (ABA), the auxin indole-3-acetic acid (IAA), and the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC)—along with their selected derivatives following inoculation with virulent and avirulent P. brassicae pathotypes. In susceptible plants, water uptake declined from the initial appearance of root galls by 21 days after inoculation, but did not have a significant effect on photosynthetic rate, stomatal conductance, or leaf chlorophyll levels. Nonetheless, a strong increase in ABA levels indicated that hormonal mechanisms were triggered to cope with water stress due to the declining water uptake. The free SA level in the roots increased strongly in resistant interactions, compared with a relatively minor increase during susceptible interactions. The ratio of conjugated SA to free SA was higher in susceptible interactions, indicating that resistant interactions are linked to the plant’s ability to maintain higher levels of bioactive free SA. In contrast, JA and its biologically active form JA-Ile declined up to 7-fold in susceptible interactions, while they were maintained during resistant interactions. The ACC level increased in the roots of inoculated plants by 21 days, irrespective of clubroot susceptibility, indicating a role of ethylene in response to pathogen interactions that is independent of disease severity. IAA levels at early and later infection stages were lower only in susceptible plants, suggesting a modulation of auxin homeostasis by the pathogen relative to the host defense system. Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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29 pages, 5488 KiB  
Article
Transcriptional Profiling Reveals the Wheat Defences against Fusarium Head Blight Disease Regulated by a NAC Transcription Factor
by Monika Vranić, Alexandre Perochon and Fiona M. Doohan
Plants 2023, 12(14), 2708; https://doi.org/10.3390/plants12142708 - 20 Jul 2023
Cited by 9 | Viewed by 2375
Abstract
The wheat NAC transcription factor TaNACL-D1 enhances resistance to the economically devastating Fusarium head blight (FHB) disease. The objective of this study was to decipher the alterations in gene expression, pathways and biological processes that led to enhanced resistance as a result of [...] Read more.
The wheat NAC transcription factor TaNACL-D1 enhances resistance to the economically devastating Fusarium head blight (FHB) disease. The objective of this study was to decipher the alterations in gene expression, pathways and biological processes that led to enhanced resistance as a result of the constitutive expression of TaNACL-D1 in wheat. Transcriptomic analysis was used to determine the genes and processes enhanced in wheat due to TaNACL-D1 overexpression, both in the presence and absence of the causal agent of FHB, Fusarium graminearum (0- and 1-day post-treatment). The overexpression of TaNACL-D1 resulted in more pronounced transcriptional reprogramming as a response to fungal infection, leading to the enhanced expression of genes involved in detoxification, immune responses, secondary metabolism, hormone biosynthesis, and signalling. The regulation and response to JA and ABA were differentially regulated between the OE and the WT. Furthermore, the results suggest that the OE may more efficiently: (i) regulate the oxidative burst; (ii) modulate cell death; and (iii) induce both the phenylpropanoid pathway and lignin synthesis. Thus, this study provides insights into the mode of action and downstream target pathways for this novel NAC transcription factor, further validating its potential as a gene to enhance FHB resistance in wheat. Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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Review

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21 pages, 2567 KiB  
Review
Potyviral Helper-Component Protease: Multifaced Functions and Interactions with Host Proteins
by Veronika Hýsková, Kateřina Bělonožníková, Josef Chmelík, Hana Hoffmeisterová, Noemi Čeřovská, Tomáš Moravec and Helena Ryšlavá
Plants 2024, 13(9), 1236; https://doi.org/10.3390/plants13091236 - 29 Apr 2024
Cited by 2 | Viewed by 2021
Abstract
The best-characterized functional motifs of the potyviral Helper-Component protease (HC-Pro) responding for aphid transmission, RNA silencing suppression, movement, symptom development, and replication are gathered in this review. The potential cellular protein targets of plant virus proteases remain largely unknown despite their multifunctionality. The [...] Read more.
The best-characterized functional motifs of the potyviral Helper-Component protease (HC-Pro) responding for aphid transmission, RNA silencing suppression, movement, symptom development, and replication are gathered in this review. The potential cellular protein targets of plant virus proteases remain largely unknown despite their multifunctionality. The HC-Pro catalytic domain, as a cysteine protease, autoproteolytically cleaves the potyviral polyproteins in the sequence motif YXVG/G and is not expected to act on host targets; however, 146 plant proteins in the Viridiplantae clade containing this motif were searched in the UniProtKB database and are discussed. On the other hand, more than 20 interactions within the entire HC-Pro structure are known. Most of these interactions with host targets (such as the 20S proteasome, methyltransferase, transcription factor eIF4E, and microtubule-associated protein HIP2) modulate the cellular environments for the benefit of virus accumulation or contribute to symptom severity (interactions with MinD, Rubisco, ferredoxin) or participate in the suppression of RNA silencing (host protein VARICOSE, calmodulin-like protein). On the contrary, the interaction of HC-Pro with triacylglycerol lipase, calreticulin, and violaxanthin deepoxidase seems to be beneficial for the host plant. The strength of these interactions between HC-Pro and the corresponding host protein vary with the plant species. Therefore, these interactions may explain the species-specific sensitivity to potyviruses. Full article
(This article belongs to the Special Issue New Horizons in Plant–Microbe Interactions)
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