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Journals Molecular Plant-microbe Intera...

Molecular Plant-microbe Interactions : MPMI

https://read.qxmd.com/read/38489400/thiosulfinate-tolerance-gene-clusters-are-common-features-of-burkholderia-onion-pathogens
#1
JOURNAL ARTICLE
Sujan Paudel, Mei Zhao, Shaun P Stice, Bhabesh Dutta, Brian H Kvitko
Burkholderia gladioli pv. alliicola, B.cepacia, and B. orbicola are common bacterial pathogens of onion. Onions produce organosulfur thiosulfinate defensive compounds after cellular decompartmentalization. Using whole genome sequencing and in silico analysis, we identified putative thiosulfinate tolerance gene (TTG) clusters in multiple onion-associated Burkholderia species similar to those characterized in other Allium-associated bacterial endophytes and pathogens. Sequence analysis revealed the presence of three Burkholderia TTG cluster types with both Type A and Type B being broadly distributed in B...
March 15, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38470518/identification-of-an-scf-ubiquitin-ligase-complex-that-contributes-to-resistance-against-valsa-canker-in-apple
#2
JOURNAL ARTICLE
Pengliang Han, Ruotong Zhang, Rui Li, Fudong Li, Lili Huang
E3 ubiquitin ligases play a critical role in plant disease resistance. Among them, the SCF (Skp1-Cullin-F-box protein) ubiquitin ligase complex is the largest family and regulates the ubiquitination of a wide range of proteins. Apple Valsa canker (AVC) is a fungal disease of apple trees caused by the fungus Valsa mali, which can lead to significant economic losses. However, the function of the SCF complex in apple resistance to this disease is still largely unknown. In this study, we identified an SCF ubiquitin ligase complex that can enhance resistance to Valsa canker in apple...
March 12, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38427716/the-roles-of-gti1-pac2-family-proteins-in-fungal-growth-morphogenesis-stress-response-and-pathogenicity
#3
JOURNAL ARTICLE
Zheng Luo, Dianguang Xiong, Chengming Tian
Gti1/Pac2 is a fungal specific transcription factor family with a stable and conserved N-terminal domains. Generally, there are two members in this family named as Gti1/Wor1/Rpy1/Mit1/Reg1/Ros1/Sge1 and Pac2, which are involving in fungal growth, development, stress response, spore production, pathogenicity and so on. The Gti1/Pac2 family proteins shared some conserved and distinct functions. For example, in Schizosaccharomyces pombe, Gti1 promotes the initiation of gluconate uptake during glucose starvation, while Pac2 controls the onset of sexual development in a pathway independent of the cAMP cascade...
March 1, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38416124/novel-secreted-effectors-conserved-among-smut-fungi-contribute-to-the-virulence-of-ustilago-maydis
#4
JOURNAL ARTICLE
Mariana Schuster, Gabriel Schweizer, Stefanie Reissmann, Petra Happel, Daniela Assmann, Nicole Roessel, Ulrich Gueldener, Gertrud Mannhaupt, Nicole Ludwig, Sarah Winterberg, Clement Pellegrin, Shigeyuki Tanaka, Volker Vincon, Libera Lo Presti, Lei Wang, Lena Bender, Carla Gonzalez, Miroslav Vranes, Joerg Kaemper, Kyungyong Seong, Ksenia Krasileva, Regine Kahmann
Fungal pathogens deploy a set of molecules (proteins, specialized metabolites, and sRNA), so called effectors, to aid the infection process. In comparison to other plant pathogens, smut fungi have small genomes and secretomes of 20 Mb and around 500 proteins, respectively.. Previous comparative genomic studies have shown that many secreted effector proteins without known domains i.e., novel, are conserved only in the Ustilaginaceae family. By analyzing the secretome of 11 species within Ustilaginaceae, we identified 53 core homologous groups commonly present in this lineage...
February 28, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38416059/unlocking-nature-s-defense-plant-pattern-recognition-receptors-as-guardians-against-pathogenic-threats
#5
JOURNAL ARTICLE
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 between specific plant R proteins and corresponding pathogenic effectors, eliciting effector-triggered immunity (ETI)...
February 28, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38381127/ectopic-expression-of-the-executor-type-r-gene-paralog-xa27b-in-rice-leads-to-spontaneous-lesions-and-enhanced-disease-resistance
#6
JOURNAL ARTICLE
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 and confers disease resistance to Xanthomonas oryzae pv. oryzae ( Xoo ). Here we reported the characterization of a transgenic line with lesion mimic phenotype, designated as Spotted leaf and resistance 1 ( Slr1 ), which was derived from rice transformation with a genomic subclone located 5,125 bp downstream of the Xa27 gene...
February 21, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38377039/comparing-methods-for-detection-and-quantification-of-plasmodesmal-callose-in-nicotiana-benthamiana-leaves-during-defense-responses
#7
JOURNAL ARTICLE
Amie Fornah Sankoh, Joseph Adjei, Daniel Roberts, Tessa M Burch-Smith
Callose, a beta-(1,3)-D-glucan polymer, is essential for regulating intercellular trafficking via plasmodesmata (PD). Pathogens manipulate PD-localized proteins to enable intercellular trafficking by removing callose at PD, or conversely by increasing callose accumulation at PD to limit intercellular trafficking during infection. Plant defense hormones like salicylic acid regulate PD-localized proteins to control PD and intercellular trafficking during immune defense responses such as systemic acquired resistance...
February 20, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38377033/a-colletotrichum-tabacum-effector-cte1-targets-and-stabilizes-nbcpr1-to-suppress-plant-immunity
#8
JOURNAL ARTICLE
Xue Yuan, Shouhui Pan, Quan Zhang, Fei Dai, Junxiang Zhang
Colletotrichum tabacum, causing anthracnose in tobacco, is a disreputable plant pathogen threatening tobacco production globally. The underlying mechanisms of C. tabacum effectors that interfere with plant defense are not well known. Here, we identified a novel effector Cte1 from C. tabacum, and its expression was up-regulated in the biotrophic stage. We found that Cte1 depresses plant cell death initiated by BAX and inhibits ROS bursts triggered by flg22 and chitin in Nicotiana benthamiana. The CTE1 knockout mutants decrease the virulence of C...
February 20, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38353601/effector-repertoire-of-the-sweetpotato-black-rot-fungal-pathogen-ceratocystis-fimbriata
#9
JOURNAL ARTICLE
Camilo Humberto Parada Rojas, Madison N Stahr, Kevin Childs, Lina Quesada-Ocampo
In 2015, sweetpotato producers in the U.S. experienced one of the worst outbreaks of black rot recorded in history with up to 60% losses reported in field, 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 to black rot in sweetpotato. In this study, we scanned the recent near chromosomal level assembly for putative secreted effectors in the sweetpotato C...
February 14, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38265007/the-zymoseptoria-tritici-avirulence-factor-avrstb6-accumulates-in-hyphae-close-to-stomata-and-triggers-a-wheat-defense-response-hindering-fungal-penetration
#10
JOURNAL ARTICLE
Julien Alassimone, Coraline Praz, Cécile Lorrain, Agustina De Francesco, Cristian Carrasco-López, Luigi Faino, Ziqi Shen, Lukas Meile, Andrea Sanchez Vallet
Zymoseptoria tritici , the causal agent of septoria tritici blotch, is one of Europe's most damaging wheat pathogens, causing significant economic losses. Genetic resistance is a common strategy to control the disease, Stb6 being a resistance gene used for over 100 years in Europe. This study investigates the molecular mechanisms underlying Stb6-mediated resistance. Utilizing confocal microscopy imaging, we identified that Z. tritici epiphytic hyphae mainly accumulates the corresponding avirulence factor AvrStb6 in close proximity to stomata...
January 24, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38240672/beyond-bites-differential-role-of-fall-armyworm-oral-secretions-and-saliva-in-modulating-sorghum-defenses
#11
JOURNAL ARTICLE
Sanket Shinde, Pritha Kundu, Joe Louis
Flavonoids are major plant secondary metabolites that provide defense against several insect pests. Previously, it has been shown that sorghum ( Sorghum bicolor ) flavonoids are required for providing resistance to fall armyworm (FAW; Spodoptera frugiperda ), which is an important chewing insect pest on several crops. We demonstrate here the role of FAW oral cues in modulating sorghum flavonoid defenses. While feeding, chewing insects release two kinds of oral cues, which are oral secretions (OS)/regurgitant and saliva...
January 19, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38240660/evidence-that-ophiostomatoid-fungal-symbionts-of-mountain-pine-beetle-do-not-play-a-role-in-overcoming-lodgepole-pine-defenses-during-mass-attack
#12
JOURNAL ARTICLE
Colleen E Fortier, Antonia E Musso, Maya L Evenden, L Irina Zaharia, Janice Cooke
Mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins) is a devastating forest insect pest that has killed millions of hectares of pines in western North America over the past two decades. Like other bark beetles, MPB vector ophiostomatoid fungal species that are pathogenic to host pine species. The phytopathogenicity of these fungal symbionts has sparked considerable debate regarding their role in facilitating MPB attack success. We tested the hypothesis that MPB ophiostomatoid fungal associates like Grosmannia clavigera [Robinson-Jeffrey and Davidson] Zipfel, de Beer and Wingfield contribute to overwhelming host defenses during MPB mass attack...
January 19, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38205771/topless-corepressors-as-an-emerging-hub-of-plant-pathogen-effectors
#13
JOURNAL ARTICLE
Mamoona Khan, Armin Djamei
Transcriptional corepressors form an ancient and essential layer of gene expression control in eukaryotes. TOPLESS and TOPLESS-RELATED (TPL)/TPR) proteins constitute a conserved family of Groucho (Gro) / Thymidine uptake 1 (Tup1) type transcriptional corepressors and control diverse growth, developmental, and stress signalling responses in plants. Due to their central and versatile regulatory roles, they act as a signalling hub to integrate various input signalling pathways in the transcriptional responses...
January 11, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38171485/overexpression-of-gmpal-genes-enhance-soybean-resistance-against-heterodera-glycines
#14
JOURNAL ARTICLE
Xiaowen Yang, Ting Liu, Ruowei Yang, Haiyan Fan, Xiaoyu Liu, Yuanhu Xuan, Yuanyuan Wang, Lijie Chen, Yuxi Duan, Xiaofeng Zhu
Soybean cyst nematode (Heterodera glycines, Soybean Cyst Nematode, SCN) disease adversely affects the yield of soybean and leads to billions of dollars in losses every year. To control the disease, it is necessary to study the resistance genes of the plant and their mechanisms. Isolavonoids are secondary metabolites of the phenylalanine pathway, and which are synthesized mainly in soybean. They are essential in plant response to biotic and abiotic stresses. In this study, we reported that phenylalanine ammonia-lyase (PAL) genes GmPALs involved in isoflavonoids biosynthesis, can positively regulate soybean resistance to SCN...
January 3, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38171380/computational-prediction-of-structure-function-and-interaction-of-myzus-persicae-green-peach-aphid-salivary-effector-proteins
#15
JOURNAL ARTICLE
Thomas Waksman, Edmund Astin, Stuart Ronan Fisher, William Hunter, Jorunn 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 towards identifying and characterizing effector proteins from these insects, their functions remain largely unknown. The recent ground-breaking development in protein structure prediction algorithms, combined with the availability of proteomics and transcriptomic datasets for agriculturally important pests provides new opportunities to explore the structural and functional diversity of effector repertoires...
January 3, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38171376/mitochondrial-outer-membrane-translocase-motom20-modulates-mitochondrial-morphology-and-is-important-for-infectious-growth-of-the-rice-blast-fungus
#16
JOURNAL ARTICLE
Shuang Wu, Ying Zhang, Lele Xu, Haibo Zhang, Yuhe Li, Leiyun Yang, Zhengguang Zhang, Haifeng Zhang
Mitochondria are highly dynamic organelles that constantly change their morphology to adapt the cellular environment through fission and fusion, which is critical for a cell to maintain normal cellular functions. Despite the significance of this process in the development and pathogenicity of the rice blast fungus Magnaporthe oryzae (M. oryzae), the underlying mechanism remains largely elusive. Here, we identified and characterized a mitochondrial outer membrane translocase MoTom20 in M. oryzae. Targeted gene deletion revealed that MoTom20 plays an important role in vegetative growth, conidiogenesis, penetration and infectious growth of M...
January 3, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38170736/comparative-analysis-of-the-avirulence-effectors-produced-by-the-fungal-stem-rust-pathogen-of-wheat
#17
JOURNAL ARTICLE
Jibril Lubega, Melania Figueroa, Peter Dodds, Kostya Kanyuka
Crops are constantly exposed to pathogenic microbes. Rust fungi are examples of these harmful microorganisms which have a major economic impact on wheat production. To protect themselves from pathogens like rust fungi, plants employ a multi-layered immune system that includes immunoreceptors encoded by resistance genes. Significant efforts have led to the isolation of numerous resistance genes against rust fungi in cereals, especially in wheat. However, the evolution of virulence of rust fungi hinders the durability of resistance genes as a strategy for crop protection...
January 3, 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38289709/-mpmi-acknowledgment-of-reviewers-2023
#18
JOURNAL ARTICLE
(no author information available yet)
No abstract text is available yet for this article.
January 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38289708/a-tale-of-two-functions-how-the-effector-pscrn108-hijacks-plant-transcription-factors-to-suppress-immunity
#19
JOURNAL ARTICLE
Amelia H Lovelace
No abstract text is available yet for this article.
January 2024: Molecular Plant-microbe Interactions: MPMI
https://read.qxmd.com/read/38148303/three-dimensional-ultrastructure-of-arabidopsis-cotyledons-infected-with-colletotrichum-higginsianum
#20
JOURNAL ARTICLE
Kamesh C Regmi, Suchismita Ghosh, Benjamin Levi Koch, Ulla Neumann, Barry D Stein, Richard O'Connell, Roger W Innes
We used Serial Block-Face Scanning Electron Microscopy (SBF-SEM) to study the host-pathogen interface between Arabidopsis cotyledons and the hemibiotrophic fungus Colletotrichum higginsianum. By combining high-pressure freezing and freeze-substitution with SBF-SEM, followed by segmentation and reconstruction of the imaging volume using IMOD, we created 3D models of the series of cytological events that occur during the Colletotrichum-Arabidopsis susceptible interaction. We found that the host cell membranes underwent massive expansion to accommodate the rapidly growing intracellular hypha...
December 26, 2023: Molecular Plant-microbe Interactions: MPMI
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