Elsinoë species are phytopathogenic fungi that cause serious scab diseases on economically important plants. The disease symptoms arise from the effects of a group of phytotoxins known as elsinochromes, produced via a type-I polyketide synthase (PKS) biosynthetic pathway. The elsinochrome gene cluster was first annotated in Elsinoë fawcettii where the main type-I PKS gene was characterized as EfPKS1.
View Article and Find Full Text PDFEucalyptus scab and shoot malformation caused by is an emerging disease and a serious threat to the global commercial forestry industry. The disease was first discovered in North Sumatra, Indonesia, and now requires a simple and effective method for early pathogen detection. In this study, a rapid and sensitive loop-mediated isothermal amplification (LAMP) assay was developed for .
View Article and Find Full Text PDFUnidirectional mating-type switching is a form of homothallic reproduction known only in a small number of filamentous ascomycetes. Their ascospores can give rise to either self-sterile isolates that require compatible partners for subsequent sexual reproduction, or self-fertile individuals capable of completing this process in isolation. The limited studies previously conducted in these fungi suggest that the differences in mating specificity are determined by the architecture of the MAT1 locus.
View Article and Find Full Text PDFFeeding Tube Dependency is a constant increasing perinatal mental health condition, with estimated 350 new cases per year in Germany.The early onset feeding tube dependency is the consequence of a generalized food aversion. To establish an evidence-based nationwide treatment plan, relevant research from the past twenty years were narratively reviewed.
View Article and Find Full Text PDFcomprises a diverse group of bacteria with various lifestyles. Although best known for their nodule-based nitrogen-fixation in symbiosis with legumes, a select group of bradyrhizobia are also capable of photosynthesis. This ability seems to be rare among rhizobia, and its origin and evolution in these bacteria remain a subject of substantial debate.
View Article and Find Full Text PDFand are ascomycete tree pathogens first described from Zambia, causing stem canker on and , respectively. The taxonomic descriptions of these two species were based on their anamorphic states, as no sexual states are known. The main purpose of this work was to use whole genome sequences to identify and define the mating-type () loci of these two species.
View Article and Find Full Text PDFHybridization is recognized as a notable driver of evolution and adaptation, which closely related species may exploit in the form of incomplete reproductive barriers. Three closely related species of (i.e.
View Article and Find Full Text PDFTranscriptional regulation controls gene expression through regulatory promoter regions that contain conserved sequence motifs. These motifs, also known as regulatory elements, are critically important to expression, which is driving research efforts to identify and characterize them. Yeasts have been the focus of such studies in fungi, including in several in silico approaches.
View Article and Find Full Text PDFThe present study focuses on the association between metabolic capacity and toxicity of the natural occurring flavonoid nevadensin in vitro. Human colon (HT29), liver (HepG2) and bone marrow (KG1) carcinoma cells were used and strong cell line dependent differences in toxic effect strength were found. HepG2 and KG1 cells were more sensitive against nevadensin treatment in comparison to HT29 cells.
View Article and Find Full Text PDFMicrobiol Mol Biol Rev
December 2021
Aim: Feeding disorders (FD) and feeding tube dependency (FTD) are defined by a persistent pattern of food aversion, but data regarding the frequency of food aversion symptoms are scarce. In this study, the frequency of aversion symptoms for FD, FTD and healthy eaters (HE) were compared.
Methods: We compared the frequency of food aversion symptoms in a group with FD (n = 32) and FTD (n = 39) to HE (n = 38) using the AFT questionnaire.
Sexual reproduction is ubiquitous in nature, and nowhere is this more so than in the fungi. Heterothallic behaviour is observed when there is a strict requirement of contact between two individuals of opposite mating type for sexual reproduction to occur. In contrast, a homothallic species can complete the entire sexual cycle in isolation, although several genetic mechanisms underpin this self-fertility.
View Article and Find Full Text PDFDraft genomes of the fungal species , and are presented. is an important lichen forming fungus and is an ambrosia beetle symbiont. and are agriculturally relevant plant pathogens that cause leaf-spots in brassicaceous vegetables and cucurbits respectively.
View Article and Find Full Text PDFTeratosphaeria destructans is an aggressive fungal pathogen causing leaf and shoot blight on young Eucalyptus trees in plantations. The disease occurs across tropical and subtropical regions of South East Asia and has recently been found in South Africa. Asexual structures of the pathogen are produced on infected tissues, but sexual structures have never been observed.
View Article and Find Full Text PDFSexual reproduction is a highly conserved feature of the eukaryotes, yet sexual compatibility is determined by a wide variety of mechanisms. In ascomycete fungi, sexual development is controlled by genes at the mating type (MAT) locus that confer either MAT1-1 or MAT1-2 mating identity. Although the locus harbours, at minimum, a single gene, the individual MAT loci of certain species, including Huntiella omanensis, encode for two or more genes.
View Article and Find Full Text PDFSexual reproduction in filamentous ascomycete fungi results in the production of highly specialized sexual tissues, which arise from relatively simple, vegetative mycelia. This conversion takes place after the recognition of and response to a variety of exogenous and endogenous cues, and relies on very strictly regulated gene, protein, and metabolite pathways. This makes studying sexual development in fungi an interesting tool in which to study gene-gene, gene-protein, and protein-metabolite interactions.
View Article and Find Full Text PDFIn filamentous fungi, genes in secondary metabolite biosynthetic pathways are generally clustered. In the case of those pathways involved in nonribosomal peptide production, a nonribosomal peptide synthetase (NRPS) gene is commonly found as a main element of the cluster. Large multifunctional enzymes are encoded by members of this gene family that produce a broad spectrum of bioactive compounds.
View Article and Find Full Text PDFAcorus calamus is a swamp herb, which is widely spread in northern hemisphere. It is used in infusions and in bitters but also in food supplements and in traditional herbal medicine. However, the main A.
View Article and Find Full Text PDFThis genome announcement includes draft genomes from including , and cf. The draft genomes of and all three important eucalyptus pathogens, are presented. The insect associate is also described.
View Article and Find Full Text PDFDraft genomes of the species (syn. , two strains, , , and are presented Both mating types (MAT1-1 and MAT1-2) of are included. Two strains of that produce sulfated homotyrosine echinocandin variants, FR209602, FR220897 and FR220899 are presented.
View Article and Find Full Text PDFHomothallism (self-fertility) describes a wide variety of sexual strategies that enable a fungus to reproduce in the absence of a mating partner. Unisexual reproduction, a form of homothallism, is a process whereby a fungus can progress through sexual reproduction in the absence of mating genes previously considered essential for self-fertility. In this study, we consider the molecular mechanisms that allow for this unique sexual behaviour in the saprotrophic ascomycete; Huntiella moniliformis.
View Article and Find Full Text PDFSexual reproduction in the Ascomycota is controlled by genes encoded at the mating-type or MAT1 locus. The two allelic versions of this locus in heterothallic species, referred to as idiomorphs, are defined by the MAT1-1-1 (for the MAT1-1 idiomorph) and MAT1-2-1 (for the MAT1-2 idiomorph) genes. Both idiomorphs can contain additional genes, although the contents of each is typically specific to and conserved within particular Pezizomycotina lineages.
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