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Phytopathogenic Fungi - Science topic

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Publications related to Phytopathogenic Fungi (4,966)
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The postharvest life of most fruit, vegetables and cereals is limited by fungal proliferation. The chemical composition of Mentha piperita, M. spicata and M. suaveolens essential oils (EO), and the antifungal activity against four pathogenic and post-harvest fungi isolated from food, were herein investigated to evaluate their potential as natural f...
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Many Streptomyces species are effective as biological controls for many pathogenic fungi. The research on new biocontrol principles for some phytopathogenic species that aren't as effective as traditional fungicides have sparked global interest. The Streptomyces genus is responsible for most of all known antibiotics. These used in various fields su...
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Simplicillium spp. are mycoparasites that exert growth-inhibitory effects on phytopathogenic fungi. However, limited studies have examined the effects of Simplicillium spp . on powdery mildews. In this study, morphological and molecular analyses revealed that S. aogashimaense is a mycoparasite of the wheat powdery mildew fungus, Blumeria graminis f...
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Morphological profiling is an omics-based approach for predicting intracellular targets of chemical compounds in which the dose-dependent morphological changes induced by the compound are systematically compared to the morphological changes in gene-deleted cells. In this study, we developed a reliable high-throughput (HT) platform for yeast morphol...
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Background Nano-particles of metals can be routinely synthesized. The cereal seeds treatment with the particles can improve early growth and crop production. Moreover, the treatment is robust and economical. Methods Metal (Fe ⁰ , Cu ⁰ , Co ⁰ ), zinc oxide (ZnO) and chitosan-stabilized silver nano-particles were synthesized and applied to cereal se...
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This study focus on the analysis of the chemical composition of the aerial parts essential oils (Eos) (needles, cones and branches) of Tunisian P. pinaster Aiton, and to evaluate their antioxidant activities, their inhibition toward germination and seedling growth of weeds and to assess their antifungal activities against phytopathogenic fungi. Eos...
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Phytopathogenic fungi can cause plant diseases that are difficult to control, including mass mortality of some tree species. The Fusarium oxysporum complex (sensu lato) is one of the most dangerous groups of phytopathogenic fungi, causing the death of conifer species, including Pinus sylvestris seedlings in forest and ornamental nurseries. Recently...
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(1) Background: Ilyonectria robusta can cause ginseng to suffer from rusty root rot. Secondary metabolites (SMs) produced by Bacillus methylotrophicus NJ13 can inhibit the mycelial growth of I. robusta. However, the molecular mechanism of the inhibition and response remains unclear. (2) Methods: Through an in vitro trial, the effect of B. methylotr...
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Metyltetraprole is a novel quinone outside inhibitor (QoI) fungicide designed to avoid cross-resistance in cytochrome b G143A-harboring QoI-resistant phytopathogenic fungi. The resistance factors of G143A-harboring fungal isolates for metyltetraprole are around 1, but > 200 for the reference QoI fungicide azoxystrobin. In this study of metyltetrapr...
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Peganum harmala L. is a perennial herb of the Tribulus family and its aerial parts and seeds can be used as medicine in the traditional medicine of China. However, the differences in chemical components and antibacterial activity between different parts have not been reported. In this study, the chemical composition of the different parts of P. har...
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Cyanobacteria and their interactions with phytopathogenic fungi in soil-less potting mixes is a less explored aspect in the protected cultivation of crops, as fungal diseases often bring about serious losses. The nursery of tomato was raised with A. laxa amended /unamended soil-less substrate mixes [P:C, perlite: cocopeat (1:1); C:V, cocopeat: verm...
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Fungal pathogens cause significant yield losses of many important crops worldwide. They are commonly controlled with fungicides which may have negative impact on human health and the environment. A more sustainable plant protection can be based on carbohydrate biopolymers because they are biodegradable and may act as antifungal compounds, effective...
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Calonectria species are important plant pathogens on a wide range of hosts, causing significant losses to plant production worldwide. During our survey on phytopathogenic fungi from 2019 to 2021, diseased samples were collected from various hosts in Guangdong Province, China. In total, 16 Calonectria isolates were obtained from leaf spots, stem bli...
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Gliotoxin is a potent antibiotic showing antifungal activity against various phytopathogenic fungi. It is produced by Q strains of Trichoderma virens and gliotoxin non-producing strains of T. virens are designated as P strains. There is no detailed study on effect of gliotoxin on suppression of damping off of tomato caused by Pythium aphanidermatum...
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The chemical composition of essential oils (EOs) from ten Peruvian Piper species (Piper coruscans, Pc; P. tuberculatum, Pt; P. casapiense, Pcs; P. obliquum, Po; P. dumosum, Pd; P. anonifolium, Pa; P. reticulatum, Pr; P. soledadense, Ps; P. sancti-felicis, Psf and P. mituense, Pm) has been studied, along with their antifungal and phytotoxic activiti...
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The fungus Aspergillus parasiticus is a contaminant in agricultural crops and its eradication involves the indiscriminate use of harmful synthetic pesticides. In the search for antifungal agents of natural origin, chitosan (Q) and capsaicin (C) are coupled in the form of nanoparticles (Np), which can possess a direct application under specific cond...
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Recognition of a pathogen avirulence (AVR) effector protein by a cognate plant resistance (R) protein triggers a set of immune responses that render the plant resistant. Pathogens can escape this so-called Effector-Triggered Immunity (ETI) by different mechanisms including the deletion or loss-of-function mutation of the AVR gene, the incorporation...
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Chitin is the most important biopolymer of the cell wall of fungi, which is degraded by the action of chitinases. Plants synthesize these enzymes to protect themselves from both abiotic and biotic factors, including phytopathogenic fungi, which remain in a dormant state until they find the right conditions to manifest themselves. For their identifi...
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Codon usage bias (CUB) could reflect co-evolutionary changes between viruses and hosts in contrast to plant and animal viruses, and the systematic analysis of codon usage among the mycoviruses that infect plant pathogenic fungi is limited. We performed an extensive analysis of codon usage patterns among 98 characterized RNA mycoviruses from eight p...
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Diseases caused by soil-borne phytopathogenic fungi are a serious problem for agricultural crops, including sunflower crops. The limited possibilities of measures to control them further increases the interest and focus on them. This article reveals data on the species composition, occurrence rate of soil-borne plant pathogenic fungi isolated from...
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Life on Earth is exposed to a variety of light spectrum from ultraviolet-B to wavelengths, called natural radiation. The electromagnetic spectrum ultraviolet (UV) consists of 3 classes: UV-A (315-400 nm), UV-B (280-315 nm) and UV-C (200-280 nm), with UV-A and UV-B reaching only the surface of the earth. UV radiation affects plants and fungal pathog...
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Peroxisomes are very important organelles in eukaryotic cells and participate in various biological processes, including pathogen–host interactions. A variety of proteins involved in peroxisome proliferation and metabolic activity within peroxisomes have been shown to be essential for full virulence of several phytopathogenic fungi. However, the ef...
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The microbes in the rhizosphere (or mycorrhizosphere) could promote plant growth, however, it is unclear whether mycorrhizosphere microbes could fight multiple fungal pathogens. In this study, twenty-one bacterial strains distributed in 6 genera, including 5 Pseudomonas strains, were isolated from mycorrhizal samples of Polyporus umbellatus that re...
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Trichoderma fungi are promising candidates for biocontrol agents and plant growth promoters. Trichoderma atrobrunneum and T. simmonsii were evaluated for the control of soil-borne phytopathogenic fungi, in the present study. Dual culture tests with Rhizoctonia solani and Fusarium oxysporum f. sp. lycopersici were used to conduct in vitro evaluation...
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Diplodia seriata in the family Botryosphaeriaceae is a cosmopolitan phytopathogenic fungus and is responsible for causing cankers, fruit rot and leaf spots on economically important plants. In this study, we characterized the virome of a single Pakistani strain (L3) of D. seriata. Several viral-like contig sequences were obtained via a previously c...
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The total diversity of bacterial and fungal communities associated with the phyllosphere (fruits and leaves) of the ‘Williams’ pear variety was analyzed in two phenological stages during fruit development and maturation. The antagonistic potential of autochthonous bacterial and yeast isolates against phytopathogenic fungi was also evaluated. A meta...
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Wheat and barley are the main cereal crops cultivated worldwide and serve as staple food for a third of the world’s population. However, due to enormous biotic stresses, the annual production has significantly reduced by 30–70%. Recently, the accelerated use of beneficial bacteria in the control of wheat and barley pathogens has gained prominence....
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Background Fungi and insect pests ruin stored crop grain, which results in millions of dollars of damage, presenting an ongoing challenge for farmers in addition to diminishing the safety of stored food. A wide-range defensive system against pathogens is needed to reduce or even eliminate the dependence of the crop yield upon the use of pesticides....
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Effectors are small and very diverse proteins secreted by fungi and translocated in plant cells during infection. Among them, MAX effectors (for Magnaporthe Avrs and ToxB) were identified as a family of effectors that share an identical fold topology despite having highly divergent sequences. They are mostly secreted by ascomycetes from the Magnapo...
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Precursor engineering is an effective strategy for the overproduction of secondary metabolites. The polyene macrolide rimocidin, which is produced by Streptomyces rimosus M527, exhibits a potent activity against a broad range of phytopathogenic fungi. It has been predicted that malonyl-CoA is used as extender units for rimocidin biosynthesis. Based...
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Multiunit-flavoenzyme NADPH oxidases (NOXs) play multiple roles in living cells via regulating signaling pathways. In several phytopathogenic fungi, NOXs are required for the polarized growth of hyphal tips and pathogenicity to host plants, but the possible mechanisms are still elusive. In our previous study, CgNOXA, CgNOXB, and CgNOXR were identif...
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The antifungal effect of ethanolic extract fractions of Annona cherimola leaves against the mycelial growth of Fusarium oxysporum was studied. The ethanolic crude extract was solvent partitioned and the ethyl acetate phase was fractionated by column or preparative thin-layer chromatography. All fractions were developed on TLC and analyzed for aceto...
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This paper is the fourth contribution in the Genera of Phytopathogenic Fungi (GOPHY) series. The series provides morphological descriptions and information about the pathology, distribution, hosts and disease symptoms, as well as DNA barcodes for the taxa covered. Moreover, 12 whole-genome sequences for the type or new species in the treated genera...
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Aim: To identify and analyze genes that encode pectinases in the genome of the fungus C. lindemuthianum, evaluate the expression of these genes, and compare putative pectinases found in C. lindemuthianum with pectinases produced by other fungi and oomycetes with different lifestyles. Methods and results: Genes encoding pectinases in the genome o...
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The special characteristics of heroic viticulture combine the geographical features of the territory where particular vineyards are located and the unique production methods used in making their wines reflected in their status as special protection zones. This work sets out the results of a 2 year project in which the impact of the main cryptogamic...
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In order to find novel environment-friendly and effective antifungal agents, four series of 2,2-dimethyl-2H-chromene derivatives were designed, synthesized and characterized by spectroscopic analysis. The antifungal activities of all the target compounds against nine phytopathogenic fungi were evaluated in vitro. Preliminary results indicated that...
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Botryosphaeria spp. are important phytopathogenic fungi that infect a wide range of woody plants, resulting in big losses worldwide each year. However, their pathogenetic mechanisms and the related virulence factors are rarely addressed. In this study, seven lignin peroxidase (LiP) paralogs were detected in Botryosphaeria kuwatsukai, named BkLiP1 t...
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Prosystemin is a 200-amino acid precursor expressed in Solanaceae plants which releases at the C-terminal part a peptidic hormone called Systemin in response to wounding and herbivore attack. We recently showed that Prosystemin is not only a mere scaffold of Systemin but, even when deprived of Systemin, is biologically active. These results, combin...
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In March 2020, typical symptoms of papaya fruit anthracnose were observed in an orchard (30 hectares) located in Oaxaca, Mexico. Disease incidence was up to 50%. Symptoms appeared as sunken necrotic lesions on papaya fruits. Colletotrichumlike colonies were consistently isolated on PDA medium and monoconidial isolates were obtained. An isolate was...
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Pitahaya (Hylocereus spp.), also called dragon fruit, is a cultivated cactus that is native to Mexico as well as Central and South America. In September 2021, soft rot of fruit of H. ocamponis, H. undatus, and H. costaricensis was observed in a commercial orchard located in La Cruz de Elota, Sinaloa, Mexico. The disease occurred on approximately 15...
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A series of novel carbamodithioates with benzothiazole scaffold have been synthesized and evaluated for their antifungal activity against various phytopathogenic fungi. Compound 17 has inflicted best fungitoxicity (ED 50 =45µg/ml)against Ustilago tritici. To understand the enzyme-inhibitor interactions, molecular modelling studies were performed to...
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Novel series of carbamodithioate is evaluated for their antifungal potential against two phytopathogenic fungi viz. Ustilago hordei and Ustilago tritici by spore germination inhibition technique. Compound 11 and 12 had inflicted excellent fungitoxicity comparable to the standard Vitavax.
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Anthracnose, caused by Colletotrichum spp., is the most important fungal disease of papaya (Carica papaya L.) worldwide. In March 2020, mature papaya fruit (cv. Maradol) showing typical symptoms of anthracnose were observed in an orchard located in Pinotepa Nacional, Oaxaca, Mexico. Disease incidence of 100 papaya plants surveyed in the orchard was...
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In recent times, the agricultural scenario has been undergoing a drastic change in converting from an inorganic to an organic system. It has been gaining fabulous popularity amongst the farmers, consumers as well as researchers. The reason is the harmful effects of inorganic agrochemicals and fertilizers that had drawn the attention of people to a...
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Pseudomonads play crucial roles in plant growth promotion and control of plant diseases. However, under natural conditions, other microorganisms competing for the same nutrient resources in the rhizosphere may exert negative control over their phytobeneficial characteristics. We assessed the expression of phytobeneficial genes involved in biocontro...
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Background and aims Ulex europaeus L. (Fabaceae), commonly known as gorse, is an invasive woody shrub that easily grows in several locations across the world. However, little is known about the interactions of this invasive species with soil microorganisms and how these microbes can promote rapid grow-rates at early stages of development. We aim to...
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Microalgae are considered a promising source of eco-friendly antifungal agents that can potentially reduce the usage of synthetic fungicides. Hence, properties of aqueous extracts from Nannochloropsis sp., Phaeodactylum tricornutum, Scenedesmus obliquus, Chlorella vulgaris and Spirulina sp. were investigated in vitro regarding their antagonistic ac...
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Trichoderma sp. is extensively applied as a beneficial fungus for the management of plant diseases, plant growth promotion, induced resistance, and plays an important role in global sustainable agriculture. This study aimed to enhance the production of microbial xylanase in high titer from the endophytic fungus Trichoderma harzianum kj831197.1, and...
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Cyamopsis tetragonoloba (Fabaceae), also known as guar or cluster bean, is an annual legume grown mainly for industrial purposes and also as an ingredient for animal feed. In October 2021, collar rot symptoms were observed in five guar fields located in Guasave, Sinaloa, Mexico. Abundant white mycelium, and later brown and small sclerotia were obse...
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Plant diseases caused by fungi are one of the major threats to global food security and understanding the interactions between fungi and plants is of great significance for plant disease control. The interaction between pathogenic fungi and plants is a complex process. From the perspective of pathogenic fungi, pathogenic fungi are involved in the r...
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Bipolaris sorokiniana is a pathogen of cereals such as wheat and barley, causing root rot, leaf blight, seedling blight, and spot blotch. This phytopathogen causes a considerable reduction in cereal yield of up to 85%. Thus, sustainable alternatives to the application of synthetic fungicides are determinants for the control of phytopathogens, such...
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Phytopathogenic fungi can cause economic losses. The application of natural products from species of the genus Agave is an alternative for controlling these organisms. The present study aimed to determine the phytochemical profile of Agave angustifolia and A. cupreata extracts and to evaluate their antifungal activity against several species of phy...
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Botrytis cinerea, Rhizoctonia solani and Hemileia vastatrix are three species of phytopathogenic fungi behind major crop losses worldwide. These have been selected as target models for testing the fungicide potential of a series of bis(ylidene) cyclohexanones. Although some compounds of this chemical class are known to have inhibitory activity agai...
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Abstract. This article outlines explanatory data on the interactions between phytopathogenic fungi and plants, as well as infestation ways of pathogenic fungi on plants. A thorough analysis of the literature revealed that phytopathogenic fungi use a number of biochemical and mechanical methods to penetrate into the plant tissues, including the prod...
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Pepper (Capsicum annuum L.) as a commercial species includes a large number of different varieties and is one of the most popular vegetables around the world. Changes in the quality of the seeds of autochthonous varieties of pepper seeds: Palanačko Čudo, Župska Rana, and Kobra were monitored in three years (2019-2021). It was noticed that the sligh...
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Background: The genus Trichoderma is widely spread in the environment, mainly in soils. Trichoderma are filamentous fungi and are used in a wide range of fields to manage plant patho-genic fungi. They have proven to be effective biocontrol agents due to their high reproducibility, adaptability, efficient nutrient mobilization, ability to colonize t...
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The soil-borne vascular fungus Verticillium dahliae infects hundreds of dicotyledonous plants, causing severe wilt diseases. During the initial colonization, V. dahliae develops a penetration peg to enable infection of cotton roots. In some phytopathogenic fungi, vacuoles play a critical role in normal formation of the infection structure. Kinesin...
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Inoculantes comerciales en Baja California, México: calidad y capacidad de biocontrol de hongos fitopatógenos Resumen En el presente estudio se realiza una evaluación de la calidad biológica y viabilidad celular de diferentes inoculantes microbianos comercializados en Baja California, México. Para tal fin, se determina por triplicado la capacidad a...