Review
Biochemistry & Molecular Biology
Sarah Koeppe, Lawrence Kawchuk, Melanie Kalischuk
Summary: Antisense RNA can induce plant disease resistance and post-translational gene silencing (PTGS). The universal mechanism of RNA interference (RNAi) is triggered by double-stranded RNA (dsRNA) produced during virus replication. Plant viruses with a single-stranded positive-sense RNA genome played a crucial role in the discovery and characterization of systemic RNA silencing and suppression. The application of dsRNA through spray-induced gene silencing (SIGS) has provided specific and environmentally friendly options for crop protection and improvement.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Agronomy
Jiahui Zhang, Huiyuan Li, Xue Zhong, Jinfu Tian, Arnaud Segers, Lanqin Xia, Frederic Francis
Summary: In this paper, we reviewed the application of RNAi technology in aphid control, including host-induced gene silencing, spray-induced gene silencing, and other delivery-method-mediated RNAi methods. The challenges in RNAi application and potential solutions to enhance RNAi efficiency are also discussed.
Article
Agronomy
Jian Wu, Shengliang Yin, Li Lin, Dongxiao Liu, Sichao Ren, Wenjing Zhang, Wencheng Meng, Peipei Chen, Qinfu Sun, Yujie Fang, Cunxu Wei, Youping Wang
Summary: In this study, host-induced gene silencing (HIGS) technology based on RNA interference (RNAi) was successfully applied to protect oilseed rape from S. sclerotiorum infection. By targeting three pathogenicity genes, stable transgenic B. napus plants were generated, resulting in the suppression of fungal growth and improved resistance to S. sclerotiorum.
Article
Plant Sciences
Lihua Chen, Bin Chen, Qian-Hao Zhu, Xinyu Zhang, Tiange Sun, Feng Liu, Yonglin Yang, Jie Sun, Yanjun Li
Summary: In this study, sugar transporter genes in V. dahliae were identified and their roles in growth and pathogenicity were investigated. VdST3 and VdST12 were found to be important for V. dahliae's growth and pathogenicity, and asiRNA was a valuable tool for functional characterization of V. dahliae genes.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Jian Wu, Shengliang Yin, Li Lin, Dongxiao Liu, Sichao Ren, Wenjing Zhang, Wencheng Meng, Peipei Chen, Qinfu Sun, Yujie Fang, Cunxu Wei, Youping Wang
Summary: In this study, host-induced gene silencing (HIGS) was successfully applied to protect Brassica napus from Sclerotinia sclerotiorum infection, demonstrating the potential of this technology in combating Sclerotinia rot.
Article
Biochemistry & Molecular Biology
Xiang Li, Keqing Mu, Shuqing Yang, Jiajing Wei, Congnawei Wang, Weiyi Yan, Fengping Yuan, Haiying Wang, Dejun Han, Zhensheng Kang, Qingdong Zeng
Summary: In this study, the function of virulence genes in R. cerealis was characterized using HIGS and SIGS, which confirmed the practicality of these methods.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2022)
Article
Plant Sciences
Bin Chen, Juan Tian, Zhidi Feng, Huan Wang, Jie Sun, Zhaosheng Kong
Summary: Verticillium wilt is a major threat to cotton quality and yield. The primary causal agent of cotton VW is Verticillium dahliae. The study identified two chitin synthase genes, VdChs5 and VdChs7, which play a crucial role in the pathogenesis of V. dahliae.
PHYTOPATHOLOGY RESEARCH
(2023)
Review
Plant Sciences
Aline Koch, Michael Wassenegger
Summary: Host-induced gene silencing (HIGS) technology is a powerful alternative for plant protection, but its efficacy and specificity require more fundamental knowledge on molecular mechanisms. Contributions of host and target RNA interference machineries may be incompatible, and closing knowledge gaps will lead to novel concepts, precise risk assessment, and tailor-made HIGS therapy for plant diseases.
Review
Biochemistry & Molecular Biology
Jian-Hua Zhao, Tao Zhang, Qing-Yan Liu, Hui-Shan Guo
Summary: The phenomenon and potential mechanisms of trans-kingdom RNA silencing (or RNA interference, RNAi) are currently one of the most exciting topics in science. Host-induced gene silencing (HIGS) based on trans-kingdom RNAi has great potential in creating crops resistant to various pests and pathogens. However, the lack of transformation technology in many crops limits the application of this technology, leading researchers to propose a possible alternative strategy for plant protection against pathogens without the need for crop genetic modification.
PLANT COMMUNICATIONS
(2021)
Review
Plant Sciences
Xiuzhen Kong, Meng Yang, Brandon H. Le, Wenrong He, Yingnan Hou
Summary: sRNA is a critical regulator in plant growth, development, and antiviral defense, and has positive roles in defense against bacteria and fungi. It has been found that sRNAs can move between species and function as antimicrobial agents against nonviral parasites. Recent studies shed light on the selection and transportation of sRNAs between plant and parasites.
MOLECULAR PLANT PATHOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Christopher W. G. Mann, Anne Sawyer, Donald M. Gardiner, Neena Mitter, Bernard J. Carroll, Andrew L. Eamens
Summary: The conflict between the need to conserve natural ecosystems and to feed an expanding population is driving the demand for more ecologically sustainable pathogen control measures. RNA-based biopesticides offer an eco-friendly alternative to conventional fungicides for crop protection. The development of pathogen-specific RNAi-inducing sprays and the understanding of gene silencing pathways in plants and fungi are crucial for the success of this technology.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Irene Teresa Bocos-Asenjo, Jonatan Nino-Sanchez, Mireille Ginesy, Julio Javier Diez
Summary: RNA-based strategies, including mycoviruses and RNAi, offer a promising alternative to agrochemicals for plant disease management, with the potential to overcome research gaps and limitations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Genetics & Heredity
Muhammad Shaban, Aamir Hamid Khan, Etrat Noor, Waqas Malik, Hafiz Muhammad Wasif Ali, Muhammad Shehzad, Umar Akram, Abdul Qayyum
Summary: This study characterized a cotton LOX gene, GhLOX2, which is involved in defense responses against Verticillium dahliae infection. Knock-down of GhLOX2 increased cotton susceptibility to the pathogen and suppressed jasmonic acid-related genes, lignin synthesis, and H2O2 contents. The study supports that JA is one of the major defense hormones against V. dahliae in cotton.
Article
Biochemistry & Molecular Biology
Carlos Perez-Arques, Maria Isabel Navarro-Mendoza, Laura Murcia, Eusebio Navarro, Victoriano Garre, Francisco Esteban Nicolas
Summary: The study used an RNA interference-based approach to identify targets involved in the virulence of Mucorales, discovering the gene wex1 as an essential factor for virulence in these fungi. This finding confirms the potential of the approach to uncover virulence factors and adds a new layer to the understanding of biological processes controlled by RNA interference in M. lusitanicus.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Sehrish Akbar, Yao Wei, Mu-Qing Zhang
Summary: Plant viruses have devastating impacts on crop yield and quality, but plants have developed gene silencing/RNA interference as a key defense system. This review provides in-depth knowledge of the RNAi mechanism, different RNAi pathways, and how RNA interference can be utilized for antiviral defense.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Microbiology
Edgar A. Chavarro-Carrero, Jasper P. Vermeulen, David E. Torres, Toshiyuki Usami, Henk J. Schouten, Yuling Bai, Michael F. Seidl, Bart P. H. J. Thomma
Summary: Plant pathogens secrete effector molecules during invasion, some of which can be recognized by host receptors to trigger defense responses. A novel resistance in wild tomato, controlled by the V2 locus, was identified against a specific strain of the soil-borne vascular wilt fungus Verticillium dahliae. The avirulence effector Av2 was identified and found to have two allelic variants.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Plant Sciences
Dandan Li, Xintong Liu, Lizhe Shu, Hua Zhang, Shiya Zhang, Yin Song, Zhao Zhang
Article
Plant Sciences
Malaika K. Ebert, Lorena I. Rangel, Rebecca E. Spanner, Demetris Taliadoros, Xiaoyun Wang, Timothy L. Friesen, Ronnie de Jonge, Jonathan D. Neubauer, Gary A. Secor, Bart P. H. J. Thomma, Eva H. Stukenbrock, Melvin D. Bolton
Summary: Cercospora beticola is a hemibiotrophic fungus causing sugar beet leaf spot disease, with its effector protein CbNip1 playing a crucial role in enhanced necrosis in the absence of light. Gene expression analysis reveals the correlation between CbNip1 and symptom development, highlighting its importance during colonization and suggesting a selective pressure to maintain a beneficial gene variant.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Plant Sciences
Hui Tian, Craig I. MacKenzie, Luis Rodriguez-Moreno, Grardy C. M. van den Berg, Hongxin Chen, Jason J. Rudd, Jeroen R. Mesters, Bart P. H. J. Thomma
Summary: Chitin is a major component of fungal cell walls and triggers immune responses in plants. The wheat pathogen Zymoseptoria tritici secretes LysM effector proteins to avoid host immune activation. Three LysM effectors, including Mgx1LysM, play roles in disarming chitin-triggered wheat immunity with varying degrees of contribution to the virulence of Z. tritici.
MOLECULAR PLANT PATHOLOGY
(2021)
Article
Genetics & Heredity
H. Martin Kramer, David E. Cook, Grardy C. M. van den Berg, Michael F. Seidl, Bart P. H. J. Thomma
Summary: The study showed that Dim2 is the main DNA methyltransferase in the plant pathogenic fungus Verticillium dahliae, while Dnmt5 and Rid may act under specific conditions, but not involved in DNA methylation. Mutants affected in chromatin-associated processes upstream of DNA methylation exhibited severe developmental and virulence defects, along with transcriptional reprogramming in specific genomic regions. The findings suggest that DNA methylation plays a minor role in regulating gene expression in V. dahliae compared to chromatin-associated factors.
EPIGENETICS & CHROMATIN
(2021)
Article
Microbiology
Jasper R. L. Depotter, Fabian van Beveren, Luis Rodriguez-Moreno, H. Martin Kramer, Edgar A. Chavarro Carrero, Gabriel L. Fiorin, Grardy C. M. van den Berg, Thomas A. Wood, Bart P. H. J. Thomma, Michael F. Seidl
Summary: Hybridization is an important evolutionary mechanism that enables organisms to adapt to environmental challenges. The study on V. longisporum revealed extensive chromosomal rearrangements, haploidization, and relaxed gene evolution in hybrids, as well as subgenome-specific responses in gene expression. This demonstrates the genomic and transcriptomic plasticity of the fungal hybrid during evolution and its adaptive potential.
Article
Multidisciplinary Sciences
Nick C. Snelders, Gabriella C. Petti, Grardy C. M. van den Berg, Michael F. Seidl, Bart P. H. J. Thomma
Summary: Plant pathogenic microbes secrete effector proteins to manipulate host microbiota, some of which may have evolved from ancient antimicrobial proteins. These effectors promote host colonization and interaction with plants, ward off fungal competitors, and extend the impact to eukaryotic members of the plant microbiome.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Review
Microbiology
Nick C. Snelders, Hanna Rovenich, Bart P. H. J. Thomma
Summary: Fungi interact not only with their hosts but also with the host-associated microbiota, manipulating the microbiota through effector proteins to stimulate disease development. Effector-mediated microbiota manipulation is fundamental to fungal biology and occurs beyond plant pathogens, being widespread in the fungal kingdom and occurring in many contexts.
FEMS MICROBIOLOGY REVIEWS
(2022)
Article
Agronomy
Jasper P. Vermeulen, Katharina Hanika, Bart P. H. J. Thomma, Yuling Bai, Henk J. Schouten
Summary: This study identified two wild tomato accessions with strong resistance against Verticillium dahliae by comparing the canopy area of inoculated plants with mock-inoculated plants. However, only one small-effect QTL associated with stunting was found in further research. The study also suggests that the scarcity of major resistance genes against V. dahliae may be caused by its endophytic behavior in nature.
Article
Plant Sciences
Hui Tian, Gabriel L. Fiorin, Anja Kombrink, Jeroen R. Mesters, Bart P. H. J. Thomma
Summary: Fungal LysM effectors with intermolecular LysM dimerization bind chitin and form polymers that may precipitate at infection sites to suppress chitin-induced plant immunity.
Article
Plant Sciences
Paul Weiland, Felix Dempwolff, Wieland Steinchen, Sven-Andreas Freibert, Hui Tian, Timo Glatter, Roman Martin, Bart P. H. J. Thomma, Gert Bange, Florian Altegoer
Summary: Plant-pathogenic fungi play a major role in causing plant diseases and crop loss. In this study, the atomic structures of Cpl1 and Uvi2 proteins from Ustilago maydis and Ustilago hordei were determined. These proteins adopt a unique double-ψβ-barrel architecture and bind to chitin fragments in a novel mode. Cpl1 localizes to the cell wall of U. maydis and might coordinate with other cell wall-degrading and decorating proteins during maize infection. Deletion of uvi2 significantly impairs U. hordei virulence, indicating a diverging function from Cpl1.
MOLECULAR PLANT PATHOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Fantin Mesny, Stephane Hacquard, Bart P. H. J. Thomma
Summary: Plants interact with a diverse array of microorganisms that affect their growth and resilience, leading them to be considered as plant holobionts rather than singular organisms. The assembly of above- and belowground microbiota in a plant holobiont is influenced by host, microbial, and environmental factors. Plants activate immune signaling upon perceiving microorganisms, which then modulate the composition of the plant microbiota through the secretion of factors. Metabolic interdependencies and antagonism between microbes are also important for shaping community assemblies. Overall, these complex interactions have evolved and play a crucial role in promoting the survival and fitness of plants and their associated microorganisms as holobionts. The co-evolution of these interactions within holobionts ultimately influences plant performance.
Editorial Material
Plant Sciences
Hanna Rovenich, Bart P. H. J. Thomma
Review
Microbiology
H. Martin Kramer, David E. Cook, Michael F. Seidl, Bart P. H. J. Thomma
Summary: Through the association of protein complexes to DNA, the eukaryotic nuclear genome is organized into open euchromatin that is accessible and condensed heterochromatin that is inaccessible. Chromatin alterations impact its organization and functionality and are important regulators of nuclear processes. Studies in fungal plant pathogens uncover the association between chromatin organization and the expression of in planta-induced genes that are important for pathogenicity.
Article
Microbiology
H. Martin Kramer, Michael F. Seidl, Bart P. H. J. Thomma, David E. Cook
Summary: Analyzing the H3K27me3 and transcription data of the plant-pathogenic fungus Verticillium dahliae grown in three in vitro cultivation media, it was found that many H3K27me3 domains displayed stable profiles across different conditions, while some differentially transcribed genes were associated with local quantitative differences in H3K27me3 ChIP-seq signals. This suggests that while H3K27me3 may play a role in transcriptional variation, it is not a universal regulator of differential transcription in response to environmental cues.