J Agric Food Chem
November 2024
The application of the bionematicides derived from microorganisms and their secondary metabolites represents a promising strategy for managing root-knot nematodes. In this study, a nematicidal compound, -3-indoleacrylic acid, was isolated from YMF3.862.
View Article and Find Full Text PDFNematode-trapping (NT) fungi are a major resource for controlling parasitic nematodes. , as a typical NT fungus, can capture nematodes by producing three-dimensional nets. The APSES transcription factor plays a vital role in fungal growth and the pathogenicity of pathogens.
View Article and Find Full Text PDFBackground And Aims: Root-knot nematodes (RKN; spp.) are among the highly prevalent and significantly detrimental pathogens that cause severe economic and yield losses in crops. Currently, control of RKN primarily relies on the application of chemical nematicides but it has environmental and public health concerns, which open new doors for alternative methods in the form of biological control.
View Article and Find Full Text PDFFEMS Microbiol Lett
January 2024
The extensive use of chemical pesticides, such as herbicides, has resulted in significant environmental pollution. Microbial degradation represents a crucial approach for managing this pesticide-associated pollution, with enrichment culturing serving as a method for isolating pesticide-degrading microorganisms. However, the efficiency of this strategy is limited, often yielding only a few isolated strains.
View Article and Find Full Text PDFRoot-knot nematodes (RKNs) are distributed globally, including in agricultural fields contaminated by heavy metals (HM), and can cause serious crop damages. Having a method that could control RKNs in HM-contaminated soil while limit HM accumulation in crops could provide significant benefits to both farmers and consumers. In this study, we showed that the nematophagous fungus Purpureocillium lavendulum YMF1.
View Article and Find Full Text PDFis a typical nematode-trapping fungus that has garnered the attention of many scholars for its highly effective lethal potential for nematodes. Secondary metabolites play an important role in -nematode interactions, but which metabolites perform which function remains unclear. We report the metabolic functions based on high-quality, chromosome-level genome assembly of wild YMF1.
View Article and Find Full Text PDFThe mushroom industry produces a large amount of spent mushroom substrate (SMS), which requires a large geographical footprint and causes pollution. Vermicomposting is a low-cost technology for its value in recycling of organic wastes and production of beneficial organic fertilizers. In this study, the changes of physicochemical properties was characterized during vermicomposting of SMS with cow dung (CD) as amendment.
View Article and Find Full Text PDFMitochondrial DNA B Resour
April 2023
The complete mitochondrial genome of was characterized in this study. This mitogenome is a closed circular molecule of 246860 bp in length with a GC content of 26.16%, including 87 predicted protein-coding genes, 29 transfer RNA genes, and two rRNA gens.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
January 2022
An investigation of the diversity of 1-aminocyclopropane-1-carboxylate deaminase producing bacteria associated with camel faeces revealed the presence of a novel bacterial strain designated C459-1. It was Gram-stain-negative, short-rod-shaped and non-motile. Strain C459-1 was observed to grow optimally at 35 °C, at pH 7.
View Article and Find Full Text PDFAdaptation to nutrient deprivation depends on the activation of metabolic programs to use reserves of energy. When outside a host plant, second-stage juveniles (J2) of the root-knot nematode (Meloidogyne spp.), an important group of pests responsible for severe losses in the production of crops (e.
View Article and Find Full Text PDFSoil fungistasis is a phenomenon in which the germination and growth of fungal propagules is widely inhibited in soils. Although fungistatic compounds are known to play important roles in the formation of soil fungistasis, how such compounds act on soil fungi is little studied. In this study, it was found that ammonia (NH) induced global protein misfolding marked by increased ubiquitination levels of proteins (ubiquitylome data and Western blot verification).
View Article and Find Full Text PDFUnderstanding the role of chemotaxis in ecological interactions between plants and microbes in the rhizosphere is necessary to optimize biocontrol strategies targeting plant soil-borne diseases. Therefore, we examined and profiled the antagonistic endophytic bacteria (AEB) population with chemotaxis potential in the medicinal plant Panax notoginseng using a cheA gene-based approach coupled with 16S rRNA sequencing. Phylogenetic analysis of the chemotactic AEB (CAEB) community in P.
View Article and Find Full Text PDFA novel Gram-stain-negative, rod-shaped, non-motile, yellowish bacterium, designated strain 1.3611, was isolated from the wormcast of . The strain grew optimally at 30-37 ℃, at pH 7.
View Article and Find Full Text PDFBiocontrol of root-knot nematode has attracted increasing attention over the past two decades. The inconsistent field performance of biocontrol agents, which is caused by soil fungistasis, often restricts their commercial application. There is still a lack of research on the genes involved in biocontrol fungi response to soil fungistasis, which is important for optimizing practical applications of biocontrol fungi.
View Article and Find Full Text PDFAn aerobic, rod-shaped, Gram-stain-positive, actinobacterial strain, designated 1.0914, was isolated from a stalactite sample collected from a cave located in Guizhou Province, southwest PR China. Based on 16S rRNA gene sequence analysis, strain 1.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
April 2020
A Gram-stain-negative, non-motile and rod-shaped bacterium, designated strain 5.0403-2, was isolated from a cave soil sample collected from Tiandong Cave, Guizhou Province, south-west PR China. Cells showed positive oxidase and catalase reactions.
View Article and Find Full Text PDFSoil-borne pest diseases result in large annual agricultural losses globally. Fungal bio-control agents are an alternative means of controlling pest diseases; however, soil fungistasis limits the effect of fungal agents. Nutrients can relieve soil fungistasis, but the mechanisms behind this process remain poorly understood.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
January 2020
A Gram-stain-negative, yellow-green bacterium, designated 1.1416, was isolated from wormcast of . The strain was non-motile, rod-shaped, and grew optimally on NA medium at 30 °C, pH 7.
View Article and Find Full Text PDFA Gram-stain-negative, rod-shaped, non-motile, aerobic, catalase-negative and oxidase-positive bacterium, designated strain Sn-9-2, was isolated from a cave soil sample collected from Tiandong cave, Guizhou Province, south-west PR China. Growth occurred at 15-40 °C (optimum, 30 °C), at pH 5.0-9.
View Article and Find Full Text PDFJ Antibiot (Tokyo)
October 2019
Two new diketopiperazines (1, 2), one new polyprenol (3), together with 19 known compounds (4-22) were obtained from the EtOAc extract of Bionectria sp. Y1085, an endophytic fungus isolated from the plant Huperzia serrata. Their structures were elucidated by extensive NMR and MS analysis.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
July 2019
A Gram-stain-negative, aerobic, non-motile and rod-shaped bacterium, designated strain X7X, was isolated from a rhizosphere soil sample of Nicotiana tabacum L. collected from a tobacco factory located in Kunming, south-western China. The cells showed oxidase-positive and catalase-positive reactions.
View Article and Find Full Text PDFSoil fungistasis limits the effect of fungal agents designed to control plant-parasitic nematodes. Benzaldehyde is a fungistatic factor produced by soil microorganisms that can suppress conidial germination, but the molecular mechanism of this suppression is unknown. In this study, three conidial proteomes of Arthrobotrys oligospora ATCC24927, a nematode-trapping fungus, were obtained, quantified, and compared.
View Article and Find Full Text PDFA Gram-staining-negative, aerobic, motile and rod-shaped bacterium, designated strain X1-8, was isolated from rhizosphere soil of Nicotiana tabacum L. collected from the tobacco produce base located in Kunming, south-west PR China. Cells showed oxidase-negative and catalase-positive reactions and were motile by means of peritrichous flagella.
View Article and Find Full Text PDFAmmonia is one of the fungistatic factors in soil that can suppress conidial germination, but the molecular mechanism underlying the suppression is unknown. In this study, the proteomes of fungistatic conidia, fresh conidia and germinated conidia of Arthrobotrys oligospora ATCC24927 were determined and quantified. The protein expression profile of fungistatic conidia was significantly different from those in the other two conditions.
View Article and Find Full Text PDF