样式: 排序: IF: - GO 导出 标记为已读
-
Focus on the Effectors at the Interface of Plant–Microbe Interactions Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-04-04 Melania Figueroa, Gitta Coaker, Kostya Kanyuka
Abstract not available
-
Effector Repertoire of the Sweetpotato Black Rot Fungal Pathogen Ceratocystis fimbriata Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-04-01 Camilo H. Parada-Rojas, Madison Stahr, Kevin L. Childs, Lina M. Quesada-Ocampo
In 2015, sweetpotato producers in the United States experienced one of the worst outbreaks of black rot recorded in history, with up to 60% losses reported in the field and packing houses and at shipping ports. Host resistance remains the ideal management tool to decrease crop losses. Lack of knowledge of Ceratocystis fimbriata biology represents a critical barrier for the deployment of resistance
-
The WY Domain of an RxLr Effector Drives Interactions with a Host Target Phosphatase to Mimic Host Regulatory Proteins and Promote Phytophthora infestans Infection Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-28 Adam R. Bentham, Wei Wang, Franziska Trusch, Freya A. Varden, Paul R. J. Birch, Mark J. Banfield
Plant pathogens manipulate the cellular environment of the host to facilitate infection and colonization that often lead to plant diseases. To accomplish this, many specialized pathogens secrete virulence proteins called effectors into the host cell, which subvert processes such as immune signaling, gene transcription, and host metabolism. Phytophthora infestans, the causative agent of potato late
-
Evolution of the Toxb Gene in Pyrenophora tritici-repentis and Related Species Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-27 Mohamed Hafez, Ryan Gourlie, Megan McDonald, Melissa Telfer, Marcelo A. Carmona, Francisco J. Sautua, Caroline S. Moffat, Paula M. Moolhuijzen, Pao Theen See, Reem Aboukhaddour
Pyrenophora tritici-repentis (tan spot) is a destructive foliar pathogen of wheat with global impact. This ascomycete fungus possesses a highly plastic open pangenome shaped by the gain and loss of effector genes. This study investigated the allelic variations in the chlorosis-encoding gene ToxB across 422 isolates representing all identified pathotypes and worldwide origins. To gain better insights
-
A Community-Curated DokuWiki Resource on Diagnostics, Diversity, Pathogenicity, and Genetic Control of Xanthomonads Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-26 Joana Costa, Joël F. Pothier, Eran Bosis, Jens Boch, Roland Kölliker, Ralf Koebnik
Xanthomonads, including Xanthomonas and Xylella species, constitute a large and significant group of economically and ecologically important plant pathogens. Up-to-date knowledge of these pathogens and their hosts is essential for the development of suitable control measures. Traditional review articles or book chapters have inherent limitations, including static content and rapid obsolescence. To
-
Genome-Enabled Analysis of Population Dynamics and Virulence-Associated Loci in the Oat Crown Rust Fungus Puccinia coronata f. sp. avenae Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-21 Tim C. Hewitt, Eva C. Henningsen, Danilo Pereira, Kerensa McElroy, Eric S. Nazareno, Sheshanka Dugyala, Hoa Nguyen-Phuc, Feng Li, Marisa E. Miller, Botma Visser, Zacharias A. Pretorius, Willem H. P. Boshoff, Jana Sperschneider, Eva H. Stukenbrock, Shahryar F. Kianian, Peter N. Dodds, Melania Figueroa
Puccinia coronata f. sp. avenae (Pca) is an important fungal pathogen causing crown rust that impacts oat production worldwide. Genetic resistance for crop protection against Pca is often overcome by the rapid virulence evolution of the pathogen. This study investigated the factors shaping adaptive evolution of Pca using pathogen populations from distinct geographic regions within the United States
-
Unveiling the Diversity: Plant Parasitic Nematode Effectors and Their Plant Interaction Partners Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-19 Sapinder Bali, Cynthia Gleason
Root-knot and cyst nematodes are two groups of plant parasitic nematodes that cause the majority of crop losses in agriculture. As a result, these nematodes are the focus of most nematode effector research. Root-knot and cyst nematode effectors are defined as secreted molecules, typically proteins, with crucial roles in nematode parasitism. There are likely hundreds of secreted effector molecules exuded
-
Unveiling the Slippery Secrets of Saliva: Effector Proteins of Phloem-Feeding Insects Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-18 Jade R. Bleau, Namami Gaur, Yao Fu, Jorunn I. B. Bos
Phloem-feeding insects include many important agricultural pests that cause crop damage globally, either through feeding-related damage or upon transmission of viruses and microbes that cause plant diseases. With genetic crop resistances being limited to most of these pests, control relies on insecticides, which are costly and damaging to the environment and to which insects can develop resistance
-
Computational Prediction of Structure, Function, and Interaction of Myzus persicae (Green Peach Aphid) Salivary Effector Proteins Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-18 Thomas Waksman, Edmund Astin, S. Ronan Fisher, William N. Hunter, Jorunn I. B. Bos
Similar to plant pathogens, phloem-feeding insects such as aphids deliver effector proteins inside their hosts that act to promote host susceptibility and enable feeding and infestation. Despite exciting progress toward identifying and characterizing effector proteins from these insects, their functions remain largely unknown. The recent groundbreaking development in protein structure prediction algorithms
-
Border Control: Manipulation of the Host–Pathogen Interface by Perihaustorial Oomycete Effectors Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-03-08 Freddie J. King, Enoch Lok Him Yuen, Tolga O. Bozkurt
Filamentous plant pathogens, including fungi and oomycetes, cause some of the most devastating plant diseases. These organisms serve as ideal models for understanding the intricate molecular interplay between plants and the invading pathogens. Filamentous pathogens secrete effector proteins via haustoria, specialized structures for infection and nutrient uptake, to suppress the plant immune response
-
Full Issue PDF Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-29
Molecular Plant-Microbe Interactions Vol. 37 No. 2
-
Unlocking Nature's Defense: Plant Pattern Recognition Receptors as Guardians Against Pathogenic Threats Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-28 Chao Zhang, Yingpeng Xie, Ping He, Libo Shan
Embedded in the plasma membrane of plant cells, receptor kinases (RKs) and receptor proteins (RPs) act as key sentinels, responsible for detecting potential pathogenic invaders. These proteins were originally characterized more than three decades ago as disease resistance (R) proteins, a concept that was formulated based on Harold Flor's gene-for-gene theory. This theory implies genetic interaction
-
Interaction of Whitefly Effector G4 with Tomato Proteins Impacts Whitefly Performance Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-28 Diana Naalden, Wannes Dermauw, Aris Ilias, Geert Baggerman, Marieke Mastop, Juliette J. M. Silven, Paula J. M. van Kleeff, Sarmina Dangol, Nicolas Frédéric Gaertner, Winfried Roseboom, Mark Kwaaitaal, Gertjan Kramer, Harrold A. van den Burg, John Vontas, Thomas Van Leeuwen, Merijn R. Kant, Robert C. Schuurink
The phloem-feeding insect Bemisia tabaci is an important pest, responsible for the transmission of several crop-threatening virus species. While feeding, the insect secretes a cocktail of effectors to modulate plant defense responses. Here, we present a set of proteins identified in an artificial diet on which B. tabaci was salivating. We subsequently studied whether these candidate effectors can play
-
AefR, a TetR Family Transcriptional Repressor, Regulates Several Auxin Responses in Pseudomonas syringae Strain PtoDC3000 Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-26 Joshua M. B. Johnson, Barbara N. Kunkel
The plant hormone indole-3-acetic acid (IAA), also known as auxin, plays important roles in plant growth and development, as well as in several plant–microbe interactions. IAA also acts as a microbial signal and in many bacteria regulates metabolism, stress responses, and virulence. In the bacterial plant pathogen Pseudomonas syringae pv. tomato strain DC3000 (PtoDC3000), exposure to IAA results in
-
Assaying Effector Cell-to-Cell Mobility in Plant Tissues Identifies Hypermobility and Indirect Manipulation of Plasmodesmata Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-26 Mina Ohtsu, Joanna Jennings, Matthew Johnston, Andrew Breakspear, Xiaokun Liu, Kara Stark, Richard J. Morris, Jeroen de Keijzer, Christine Faulkner
In plants, plasmodesmata establish cytoplasmic continuity between cells to allow for communication and resource exchange across the cell wall. While plant pathogens use plasmodesmata as a pathway for both molecular and physical invasion, the benefits of molecular invasion (cell-to-cell movement of pathogen effectors) are poorly understood. To establish a methodology for identification and characterization
-
Additive and Specific Effects of Elicitor Treatments on the Metabolic Profile of Arabidopsis thaliana Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-26 Lisa Cabre, Lun Jing, Moffat Makechemu, Kylhan Heluin, Sarah El Khamlichi, Jérôme Leprince, Marie Christine Kiefer-Meyer, Sylvain Pluchon, Jean-Claude Mollet, Cyril Zipfel, Eric Nguema-Ona
Several elicitors of plant defense have been identified and numerous efforts to use them in the field have been made. Exogenous elicitor treatments mimic the in planta activation of pattern-triggered immunity (PTI), which relies on the perception of pathogen-associated molecular patterns (PAMPs) such as bacterial flg22 or fungal chitins. Early transcriptional responses to distinct PAMPs are mostly
-
Ectopic Expression of the Executor-Type R Gene Paralog Xa27B in Rice Leads to Spontaneous Lesions and Enhanced Disease Resistance Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-21 Dongsheng Tian, Joanne Teo, Zhongchao Yin
Plant disease resistance (R) gene-mediated effector-triggered immunity (ETI) is usually associated with hypersensitive response (HR) and provides robust and race-specific disease resistance against pathogenic infection. The activation of ETI and HR in plants is strictly regulated, and improper activation will lead to cell death. Xa27 is an executor-type R gene in rice induced by the TAL effector AvrXa27
-
Bacterial Mutation During Seasonal Epidemics Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-21 Anuj Sharma, Sujan Timilsina, Peter Abrahamian, Gerald V. Minsavage, Jeffrey B. Jones, Gary E. Vallad, Erica M. Goss
Rapidly evolving bacterial pathogens pose a unique challenge for long-term plant disease management. In this study, we investigated the types and rate of mutations in bacterial populations during seasonal disease epidemics. Two phylogenetically distinct strains of the bacterial spot pathogen, Xanthomonas perforans, were marked, released in tomato fields, and recaptured at several time points during
-
Comparative Pangenomic Insights into the Distinct Evolution of Virulence Factors Among Grapevine Trunk Pathogens Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2024-02-21 Jadran F. Garcia, Abraham Morales-Cruz, Noé Cochetel, Andrea Minio, Rosa Figueroa-Balderas, Philippe E. Rolshausen, Kendra Baumgartner, Dario Cantu
The permanent organs of grapevines (Vitis vinifera L.), like those of other woody perennials, are colonized by various unrelated pathogenic ascomycete fungi secreting cell wall-degrading enzymes and phytotoxic secondary metabolites that contribute to host damage and disease symptoms. Trunk pathogens differ in the symptoms they induce and the extent and speed of damage. Isolates of the same species
-
Fungal cell wall-associated effectors: Sensing, integration, suppression and protection. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-13 Evan Johann John,Minh-Quang Chau,Cuong V Hoang,Neelima Chandrasekharan,Chibbhi Bhaskar,Lay-Sun Ma
The cell wall (CW) of plant-interacting fungi, as the direct interface with host plants, plays a crucial role in fungal development. A number of secreted proteins are directly associated with the fungal CW, either through covalent or non-covalent interactions, and serve a range of important functions. In the context of plant-fungal interactions many are important for fungal development in the host
-
Mutagenesis of wheat powdery mildew reveals a single gene controlling both NLR and tandem kinase-mediated immunity. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-07 Zoe Bernasconi,Ursin Stirnemann,Matthias Heuberger,Alexandros Georgios Sotiropoulos,Johannes Graf,Thomas Wicker,Beat Keller,Javier Sánchez Martín
Blumeria graminis f. sp. tritici (Bgt) is a globally important fungal wheat pathogen. Some wheat genotypes contain powdery mildew resistance (Pm) genes, encoding immune receptors that recognize specific fungal-secreted effectors proteins, then defined as avirulence (Avr) factors. Identifying Avr factors is vital for understanding the mechanisms, function, and durability of wheat resistance. Here, we
-
ROS, Moss, and a Rossmann Fold Protein: Identification of a Key Signaling Component for Plant Immunity. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-01 Amelia H Lovelace
-
Characterization of soybean events with enhanced expression of the microtubule-associated protein 65-1 (MAP65-1). Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-27 Panya Kim,Samira Mahboob,Hanh T Nguyen,Samuel Eastman,Olivia Meyer,Matthew Sousek,Roch E Gaussoin,Jae L Brungardt,Tamra A Jackson-Ziems,Rebecca Roston,James Robert Alfano,Thomas Clemente,Ming Guo
Microtubule-associated protein 65-1 (MAP65-1) protein plays an essential role in plant cellular dynamics through impacting stabilization of the cytoskeleton by serving as a crosslinker of microtubules. The role of MAP65-1 in plants has been associated with phenotypic outcomes in response to various environmental stresses. The Arabidopsis MAP65-1 (AtMAP65-1) is a known virulence target of plant bacterial
-
Regulatory effects of diverse DSF family quorum sensing signals in plant-associated bacteria. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-25 Kaihuai Li,Chaoyun Ma,Xue Zhou,Chunlan Xiong,Bo Wang,Yong Wang,Fengquan Liu
Numerous bacterial species employ diffusible signal factor (DSF)-based quorum sensing (QS) as a widely conserved cell-cell signalling communication system to collectively regulate various behaviours crucial for responding to environmental changes. cis-11-Methyl-dodecenoic acid, known as DSF, was first identified as a signalling molecule in Xanthomonas campestris pv. campestris. Subsequently, many structurally
-
Are Histidine Kinases of Arbuscular Mycorrhizal Fungi Involved in the Response to Ethylene and Cytokinins? Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-18 Ayla Mongès,Hajar Yaakoub,Baptiste Bidon,Gaëlle Glévarec,François Héricourt,Sabine Carpin,Lucie Chauderon,Lenka Drašarová,Lukáš Spíchal,Brad M Binder,Nicolas Papon,Soizic Rochange
Signals are exchanged at all stages of the arbuscular mycorrhizal (AM) symbiosis between fungi and their host plants. Root-exuded strigolactones are well-known early symbiotic cues, but the role of other phytohormones as interkingdom signals has seldom been investigated. Here we focus on ethylene and cytokinins, for which candidate receptors have been identified in the genome of the AM fungus Rhizophagus
-
Unraveling the Molecular Arms Race: Grapevine Fanleaf Virus Proteins as Suppressors of Plant Antiviral Silencing Pathways. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-11 Siva Sankari,Amelia Helen Lovelace
-
Facilitation of symplastic effector protein mobility by paired effectors is conserved in different classes of fungal pathogens. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-02 Nacera Talbi,Mila C Blekemolen,Slavica Janevska,Daniel P Zendler,Herman Van Tilbeurgh,Isabelle Fudal,Frank L W Takken
Recently, it was uncovered that plant pathogens produce effectors that spread via plasmodesmata to allow modulation of host processes in distal uninfected cells. Fusarium oxysporum forma specialis lycopersici (Fol) facilitates effector translocation by expansion of the size exclusion limit of plasmodesmata using the Six5/Avr2 effector pair. How other fungal pathogens manipulate plasmodesmata is unknown
-
Sowing Symbiotic Success: Defining the Role of O-Antigen Polymerase in a Legume-Rhizobia Interaction. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-01 Manish Tiwari,Amelia H Lovelace
-
Laser capture microdissection transcriptome reveals spatiotemporal tissue gene expression patterns of M. truncatula roots responding to rhizobia. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-17 Elise Schnabel,Jacklyn Thomas,Rabia El-Hawaz,Yueyao Gao,William Poehlman,Suchitra Chavan,Asher Pasha,Eddi Esteban,Nicholas L Provart,F Alex Feltus,Julia Frugoli
We report a public resource for examining the spatiotemporal RNA expression of 54,893 M. truncatula genes during the first 72 hours of response to rhizobial inoculation. Using a methodology that allows synchronous inoculation and growth of over 100 plants in a single media container, we harvested the same segment of each root responding to rhizobia in the initial inoculation over a time course, collected
-
The Globodera rostochiensis Gr29D09 effector with a role in defense suppression targets the potato hexokinase 1 protein. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-17 Shiyan Chen,Tien Tran,Athena Yi-Chun Yeh,Huijun Yang,Jiansong Chen,Yong Yang,Xiaohong Wang
The potato cyst nematode (Globodera rostochiensis) is an obligate root pathogen of potatoes. G. rostochiensis encodes several highly expanded effector gene families including the Gr4D06 family; however, little is known about the function of this effector family. We cloned four 29D09 genes from G. rostochiensis (named Gr29D09v1/v2/v3/v4) that share high sequence similarity and are homologous to the
-
Unraveling the Function of FgNls1, a Fusarium graminearum Effector Critical for Full Virulence on Wheat. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-13 Manish Tiwari,Amelia H Lovelace
-
New Biochemical Principles for NLR Immunity in Plants. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-11 Jijie Chai,Wen Song,Jane E Parker
While working for the United States Department of Agriculture on the North Dakota Agricultural College campus in Fargo, North Dakota, in the 1940s and 1950s, Harold H. Flor formulated the genetic principles for coevolving plant host-pathogen interactions that govern disease resistance or susceptibility. His 'gene-for-gene' legacy runs deep in modern plant pathology and continues to inform molecular
-
From Gene-for-Gene to Resistosomes: Flor's Enduring Legacy. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-11 Peter N Dodds
The gene-for-gene model proposed by H. H. Flor has been one of the fundamental precepts of plant-pathogen interactions that has underpinned decades of research towards our current concepts of plant immunity. The broad validity of this model as an elegant and accurate genetic description of specific recognition events between the products of plant resistance (R) and pathogen avirulence (Avr) genes has
-
Size restriction is required for proper functioning of a bipartite begomovirus AC4 protein. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-04 Wenwen Zhang,Shunmin Liu,Guohui Xie,Xiuyu Li,Yingying Zhai,Wenzhong Lin,Zujian Wu,Zhenguo Du,Jie Zhang
Many geminiviruses including members of the genus Begomovirus produce a protein known as C4 or AC4. Whereas C4/AC4 typically consists of over 80 amino acid residues, a few are much shorter. The significance of these shorter C4/AC4 proteins in viral infection and why the virus maintains their abbreviated length is not yet understood. The AC4 of the begomovirus tomato leaf curl Hsinchu virus (ToLCHsV)
-
The necrotrophic pathogen Parastagonospora nodorum is a master manipulator of wheat defense. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-08-15 Gayan Kariyawasam,Ashley C Nelson,Simon Williams,Peter Scott Solomon,Justin D Faris,Timothy L Friesen
Parastagonospora nodorum is a necrotrophic pathogen of wheat that is particularly destructive in major wheat growing regions of the United States, Northern Europe, Australia, and South America. P. nodorum secretes necrotrophic effectors that target wheat susceptibility genes to induce programmed cell death (PCD), resulting in increased colonization of host tissue and ultimately sporulation to complete
-
Genome Sequence Data of Achromobacter vitis, an Endophytic Species with Biocontrol Properties Against Xylella fastidiosa. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-08-14 Elizabeth Deyett,Vanessa E T M Ashworth,Biagio DiSalvo,Flavia Campos Freitas Vieira,M Caroline Roper,Philippe E Rolshausen
-
Secreted Effector Proteins of the Poplar Leaf Spot and Stem Canker Pathogen Sphaerulina musiva Manipulate Plant Immunity and Contribute to Virulence in Diverse Ways. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-08-08 Yao Zhao,Xinyue Zheng,Javier Felipe Tabima,Kelsey Sondreli,Sheng Zhu,Hope Hundley,Diane Bauer,Kerrie Barry,Yaxin Zhang,Jeremy Schmutz,Yuanchao Wang,Jared LeBoldus,Qin Xiong
Fungal effectors play critical roles in manipulating plant immune responses and promoting colonization. Sphaerulina musiva is a heterothallic ascomycete fungus that causes Septoria leaf spot and stem canker disease in Populus plantations. This disease can result in premature defoliation, branch and stem breakage, increased mortality, and plantation failure. However, little is known about the interaction
-
Full Issue PDF Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-29
Molecular Plant-Microbe Interactions Vol. 36 No. 6
-
Playing with FIRE: How an RXLR Oomycete Effector Fuels Disease by Hijacking 14-3-3 Proteins Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-29 Manish Tiwari, Amelia H. Lovelace
The plant pathogen Phytophthora palmivora causes rot disease in several monocots and dicots. The plant 14-3-3 proteins are targets of different types of effector molecules secreted by the pathogens. An RXLR-type effector FIRE (14-3-3 interacting RXLR effector) and its target 14-3-3 proteins that localize to haustoria have been identified, pointing to a potential site of interaction. The pathogen hijacks
-
FIRE Mimics a 14-3-3–Binding Motif to Promote Phytophthora palmivora Infection Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-27 Edouard Evangelisti, Alex Guyon, Liron Shenhav, Sebastian Schornack
The oomycete Phytophthora palmivora infects a wide range of tropical crops worldwide. Like other filamentous plant pathogens, it secretes effectors to colonize plant tissues. Here, we characterize FIRE, an RXLR effector that contains a canonical mode I 14-3-3 phospho-sensor–binding motif that is conserved in effectors of several Phytophthora species. FIRE is phosphorylated in planta and interacts with
-
Glutamate Positively Regulates Chitinase Activity and the Biocontrol Efficacy of Pseudomonas protegens Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-28 Kasumi Takeuchi, Masayo Ogiso, Tomohiro Morohoshi, Shigemi Seo
Broad-spectrum biocontrol by Pseudomonas protegens CHA0 and other fluorescent pseudomonads is achieved through the generation of various secondary metabolites with antibiotic activities against not only other microbes but, also, nematodes and insects present in the rhizosphere. A previous metabolomic study demonstrated that intracellular low–molecular weight effectors, such as guanosine tetraphosphate
-
Nitric Oxide Regulates the Ralstonia solanacearum Type III Secretion System Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-27 Connor G. Hendrich, Alicia N. Truchon, Beth L. Dalsing, Caitilyn Allen
Ralstonia solancearum causes bacterial wilt disease on diverse plant hosts. R. solanacearum cells enter a host from soil or infested water through the roots, then multiply and spread in the water-transporting xylem vessels. Despite the low nutrient content of xylem sap, R. solanacearum grows very well inside the host, using denitrification to respire in this hypoxic environment. R. solanacearum growth
-
Generation of Attenuated Mutants of East Asian Passiflora Virus for Disease Management by Cross Protection Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-28 Yee-Hang Chong, Duy-Hung Do, Hao-Wen Cheng, Joseph A. J. Raja, Xuan-Tung Ngo, San-Gwang Hwang, Shyi-Dong Yeh
East Asian passiflora virus (EAPV) seriously affects passionfruit production in Taiwan and Vietnam. In this study, an infectious clone of the EAPV Taiwan strain (EAPV-TW) was constructed, and EAPV-TWnss, with an nss tag attached to its helper component-protease (HC-Pro), was generated for monitoring the virus. Four conserved motifs of EAPV-TW HC-Pro were manipulated to create single mutations of F8I
-
Overlapping Local and Systemic Defense Induced by an Oomycete Fatty Acid MAMP and Brown Seaweed Extract in Tomato Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-28 Domonique C. Lewis, Danielle M. Stevens, Holly Little, Gitta L. Coaker, Richard M. Bostock
Eicosapolyenoic fatty acids are integral components of oomycete pathogens that can act as microbe-associated molecular patterns to induce disease resistance in plants. Defense-inducing eicosapolyenoic fatty acids include arachidonic acid (AA) and eicosapentaenoic acid and are strong elicitors in solanaceous plants, with bioactivity in other plant families. Similarly, extracts of a brown seaweed, Ascophyllum
-
Discovery of Novel Effector Protein Candidates Produced in the Dorsal Gland of Adult Female Root-Knot Nematodes Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-07-27 Raquel O. Rocha, Richard S. Hussey, Lauren E. Pepi, Parastoo Azadi, Melissa G. Mitchum
Root-knot nematodes (RKN) (Meloidogyne spp.) represent one of the most damaging groups of plant-parasitic nematodes. They secrete effector proteins through a protrusible stylet to manipulate host cells for their benefit. Stylet-secreted effector proteins are produced within specialized secretory esophageal gland cells, one dorsal gland (DG) and two subventral glands (SvG), whose activity differ throughout
-
Arabidopsis thaliana Early Foliar Proteome Response to Root Exposure to the Rhizobacterium Pseudomonas simiae WCS417. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-27 Francesca Marzorati,Rossana Rossi,Letizia Bernardo,Pierluigi Mauri,Dario Di Silvestre,Emmanuelle Lauber,Laurent D Noël,Irene Murgia,Piero Morandini
Pseudomonas simiae WCS417 is a plant growth-promoting rhizobacterium that improves plant health and development. In this study, we investigate the early leaf responses of Arabidopsis thaliana to WCS417 exposure and the possible involvement of formate dehydrogenase (FDH) in such responses. In vitro-grown A. thaliana seedlings expressing an FDH::GUS reporter show a significant increase in FDH promoter
-
A Variant of LbCas12a and Elevated Incubation Temperatures Enhance the Rate of Gene Editing in the Oomycete Phytophthora infestans. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-27 Carl S Mendoza,Annika Findlay,Howard S Judelson
CRISPR-Cas editing systems have proved to be powerful tools for functional genomics research, but their effectiveness in many non-model species remains limited. In the potato and tomato pathogen Phytophthora infestans, an editing system was previously developed that expresses the Lachnospiracae bacterium Cas12a endonuclease (LbCas12a) and guide RNA from a DNA vector. However, the method works at low
-
Mechanisms of Primed Defense: Plant Immunity Induced by Endophytic Colonization of a Mycovirus-Induced Hypovirulent Fungal Pathogen. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-28 Connor Pedersen,Shin-Yi Lee Marzano
How mycovirus-induced hypovirulence in fungi activates plant defense is still poorly understood. The changes in plant fitness and gene expression caused by the inoculation of the fungus Sclerotinia sclerotiorum harboring and made hypovirulent by the mycovirus soybean leaf-associated gemygorvirus-1 (SlaGemV-1) of the species Gemycircularvirus soybe1 were examined in this study. As the hypovirulent fungus
-
The Sw-5b NLR Immune Receptor Induces Early Transcriptional Changes in Response to Thrips and Mechanical Modes of Inoculation of Tomato spotted wilt orthotospovirus. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-27 Norma A Ordaz,Ugrappa Nagalakshmi,Leonardo S Boiteux,Hagop S Atamian,Diane E Ullman,Savithramma P Dinesh-Kumar
The NLR (nucleotide-binding leucine-rich repeat) class immune receptor Sw-5b confers resistance to Tomato spotted wilt orthotospovirus (TSWV). Although Sw-5b is known to activate immunity upon recognition of the TSWV movement protein NSm, we know very little about the downstream events that lead to resistance. Here, we investigated the Sw-5b-mediated early transcriptomic changes that occur in response
-
Loss of PWT7, Located on a Supernumerary Chromosome, Is Associated with Parasitic Specialization of Pyricularia oryzae on Wheat. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-27 Soichiro Asuke,Akiko Horie,Kaori Komatsu,Ryota Mori,Trinh Thi Phuong Vy,Yoshihiro Inoue,Yushan Jiang,Yuna Tatematsu,Motoki Shimizu,Yukio Tosa
Pyricularia oryzae, a blast fungus of gramineous plants, is composed of various host genus-specific pathotypes. The avirulence of an Avena isolate on wheat is conditioned by PWT3 and PWT4. We isolated the third avirulence gene from the Avena isolate and designated it as PWT7. PWT7 was effective as an avirulence gene only at the seedling stage or on leaves. PWT7 homologs were widely distributed in a
-
Methylome Response to Proteasome Inhibition by Pseudomonas syringae Virulence Factor Syringolin A. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-11-27 Diane Marie Valerie Bonnet,Louis Tirot,Stefan Grob,Pauline Emilie Jullien
DNA methylation is an important epigenetic mark required for proper gene expression and silencing of transposable elements. DNA methylation patterns can be modified by environmental factors such as pathogen infection, in which modification of DNA methylation can be associated with plant resistance. To counter the plant defense pathways, pathogens produce effector molecules, several of which act as
-
The Genetic Requirements for HiVir-Mediated Onion Necrosis by Pantoea ananatis, a Necrotrophic Plant Pathogen Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-06-28 Gi Yoon Shin, Bhabesh Dutta, Brian Kvitko
Pantoea ananatis is an unusual bacterial pathogen that lacks typical virulence determinants yet causes extensive necrosis in onion foliage and bulb tissues. The onion necrosis phenotype is dependent on the expression of the phosphonate toxin, pantaphos, which is synthesized by putative enzymes encoded by the HiVir (high virulence) gene cluster. The genetic contributions of individual hvr genes in HiVir-mediated
-
A Lipopolysaccharide O-Antigen Synthesis Gene in Mesorhizobium huakuii Plays Differentiated Roles in Root Nodule Symbiotic Compatibility with Astragalus sinicus. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-20 Zhide Tang,Shuyun Cai,Yuan Liu,Dongzhi Li,Fuli Xie,Hui Lin,Dasong Chen,Youguo Li
Lipopolysaccharide (LPS) is a ubiquitous microbial-associated molecular pattern. Plants can sense the three components of LPS, including core polysaccharide, lipid A, and O-antigen. LPS biosynthesis is an essential factor for the successful establishment of symbiosis in the rhizobium-legume plant system. The MCHK_1752 gene (Mesorhizobium huakuii 7653R gene) encodes O-antigen polymerase and affects
-
Full Issue PDF Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-05-29
Molecular Plant-Microbe Interactions Vol. 36 No. 5
-
Host Specificity Controlled by PWL1 and PWL2 Effector Genes in the Finger Millet Blast Pathogen Magnaporthe oryzae in Eastern Africa. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-10 Hosea Isanda Masaki,Santie de Villiers,Peng Qi,Kathryn A Prado,Davies Kiambi Kaimenyi,Kassahun Tesfaye,Tesfaye Alemu,John Takan,Mathews Dida,Justin Ringo,Wilton Mbinda,Chang Hyun Khang,Katrien M Devos
Magnaporthe oryzae, a devastating pathogen of finger millet (Eleusine coracana), secretes effector molecules during infection to manipulate host immunity. This study determined the presence of avirulence effector genes PWL1 and PWL2 in 221 Eleusine blast isolates from eastern Africa. Most Ethiopian isolates carried both PWL1 and PWL2. Kenyan and Ugandan isolates largely lacked both genes, and Tanzanian
-
Not All Acidovorax Are Created Equal: Gibberellin Biosynthesis in the Turfgrass Pathogen Acidovorax avenae subsp. avenae. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-18 Andrei Ogonkov,Paula Emily Brosius,Quan Zeng,Severin Sasso,Raimund Nagel
In recent years Acidovorax avenae subsp. avenae was identified as a major cause of bacterial etiolation and decline (BED) in turfgrasses and has become a growing economical concern for the turfgrass industry. The symptoms of BED resemble those of "bakanae," or foolish seedling disease, of rice (Oryzae sativa), in which the gibberellins produced by the infecting fungus, Fusarium fujikuroi, contribute
-
NX Trichothecenes Are Required for Fusarium graminearum Infection of Wheat Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-05-17 Guixia Hao, Susan McCormick, Helene Tiley, Santiago Gutiérrez, Gabdiel Yulfo-Soto, Martha M. Vaughan, Todd J. Ward
Fusarium graminearum causes Fusarium head blight (FHB) on wheat and barley and contaminates grains with various mycotoxins that are toxic to humans and animals. Deoxynivalenol (DON), a type B trichothecene, is an essential virulence factor that is required for F. graminearum to spread within a wheat head. Recently, novel type A trichothecenes NX-2 and NX-3 (NX) have been found in F. graminearum. NX
-
The Rubber Tree (Heveae brasiliensis) MLO Protein HbMLO12 Promotes Plant Susceptibility to Sustain Infection by a Powdery Mildew Fungus Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-05-17 Xiao Li, Wenyuan Zhao, Zhongming Zhang, Yuxiao Fang, Linpeng Dong, Jinyao Yin, Yuhan Liu, Daipeng Chen, Zhigang Li, Wenbo Liu, Chunhua Lin, Weiguo Miao
Powdery mildew severely affects several important crops and cash plants. Disruption of mildew resistance locus O (MLO) genes elevates resistance against powdery mildew in several plants. However, whether rubber tree (Heveae brasiliensis) MLO proteins are linked to susceptibility remains unknown, owing to technical limitations in the genetic manipulation of this woody plant. A previous study showed
-
Xylella fastidiosa Requires the Type II Secretion System for Pathogenicity and Survival in Grapevine. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-10-25 Brian Ingel,Claudia Castro,Lindsey Burbank,Nancy Her,N Itzel De Anda,Hannah Way,Peng Wang,M Caroline Roper
Xylella fastidiosa is a xylem-limited bacterial pathogen that causes Pierce's disease (PD) of grapevine. In host plants, this bacterium exclusively colonizes the xylem, which is primarily non-living at maturity. Understanding how X. fastidiosa interfaces with this specialized conductive tissue is at the forefront of investigation for this pathosystem. Unlike many bacterial plant pathogens, X. fastidiosa
-
Beneficial Rhizobacterium Triggers Induced Systemic Resistance of Maize to Gibberella Stalk Rot via Calcium Signaling. Mol. Plant Microbe Interact. (IF 3.5) Pub Date : 2023-09-13 Yu Cao,Yinying Wang,Cuilin Gui,Kilemi Jessee Nguvo,Liang Ma,Qing Wang,Qirong Shen,Ruifu Zhang,Xiquan Gao
Gibberella stalk rot (GSR) caused by the fungus Fusarium graminearum is a devastating disease of maize (Zea mays L.), but we lack efficient methods to control this disease. Biological control agents, including beneficial microorganisms, can be used as an effective and eco-friendly approach to manage crop diseases. For example, Bacillus velezensis SQR9, a bacterial strain isolated from the rhizosphere