Research Articles

Epoxyquinoids, compounds with chiral centers and reactive groups, are pivotal in drug discovery. This study elucidates (-)-asperpentyn biosynthesis, highlighting enzymes AtyG, AtyE, AtyD, and AtyC. Notably, substrate epoxide configuration dictates AtyD's regioselectivity in ketoreduction. Mutagenesis uncovers the F97 residue's key role, expanding synthetic potential in epoxyquinoid production.

This study examines how temperature affects meiotic processes in thermotolerant and cold-tolerant yeast species, focusing on Saccharomyces cerevisiae and Saccharomyces uvarum. Findings reveal temperature-sensitive sporulation efficiency, spore viability, and recombination rates, suggesting thermal sensitivity links to thermal tolerance, potentially impacting reproductive isolation.

Mycorrhizal fungi, which form symbiotic relationships with plant roots, are crucial for ecosystem health. Recent research employed machine-learning on 25,000 global soil samples to map arbuscular and ectomycorrhizal fungal richness. The study reveals that global hotspots of mycorrhizal diversity are inadequately protected, emphasizing the need for targeted conservation efforts.

Convolutional neural networks (CNNs) are a form of deep learning used for image recognition tasks. This study showcases their application in microbial colony recognition, achieving remarkable accuracy. GoogLeNet excelled, reaching 98.80% accuracy in distinguishing categories such as gram-negative bacilli and Candida. These CNNs promise to be invaluable tools for microbiologists, offering objective and reliable classification.

Fungal cell walls, vital for structural integrity and environmental protection, rely on α-glucan polymers. A recent study reveals that in Schizosaccharomyces pombe, two α-amylase-like enzymes, Aah1 and Aah3, facilitate α-glucan network formation. Their absence leads to structural defects, highlighting GH13-family enzymes as novel antifungal targets due to their role in cell wall biosynthesis.

The Environmental Tolerance Mismatch Hypothesis (ETMH) posits that pathogen severity hinges on host-pathogen environmental performance disparities. This study leverages thermal niches from species occurrence data to validate ETMH, revealing that Batrachochytrium dendrobatidis prevalence in frogs decreases with thermal mismatches, suggesting a predictive model for pathogen impacts.

The study identifies Fusarium neoglobosum as a novel species within the Asian clade of the Fusarium fujikuroi complex, distinct from F. globosum. Analyzed strains from Japan and Russia reveal heterothallic sexual reproduction and varied mycotoxin production, with notable fumonisin synthesis. This research expands the geographic distribution of F. neoglobosum to East and North Asia.

Global epistasis, where genetic effects are fitness-dependent, is explored in Saccharomyces cerevisiae through DNA barcode sequencing of 169 progeny under CRISPRi perturbations. Findings reveal that fitter segregants are more sensitive to genetic changes, identifying 58 loci whose interactions contribute to global epistasis and largely overlap with those affecting unperturbed fitness.

Candida glabrata, a significant pathogen in invasive candidiasis, employs unique stress adaptation mechanisms to thrive under oxidative stress and amino acid starvation, diverging from C. albicans' reliance on hyphae. This research uncovers the critical role of Gcn2-Gcn4 in downregulating protein translation, enhancing survival, and maintaining virulence in host macrophages under nutrient deprivation.

Prenylated indole alkaloids, significant for their biological activity, include the complex C3a-reverse prenylated natural products synthesized through metal-catalyzed reactions. This study unveils an iridium-catalyst system for the first enantioselective reverse prenylation of 3-substituted indoles, achieving high yield and selectivity, advancing synthetic capabilities for tryptamine-derived alkaloids.

Nanomaterials are materials engineered at the nanoscale, often exhibiting unique properties, while antifungal nanomedicines utilize these to combat fungal infections. This research examines the mechanisms of interaction between nanomaterials and fungi, highlighting cell damage processes. It offers insights crucial for the future engineering of innovative antifungal nanomedicines.

Nucleotide-binding leucine-rich repeat receptors (NLRs) are proteins that detect pathogens in plants. This study reveals that a single engineered NLR conferred broad-spectrum immunity against various pathogens, including fungi. Demonstrating resistance against potyviruses, the findings imply potential applications in controlling diverse threats in agriculture, enhancing plant protection strategies.