Mon1 is a guanine nucleotide exchange factor subunit that activates the Ypt7 Rab GTPase and is essential for vacuole trafficking and autophagy in eukaryotic organisms. Here, we identified and characterized the function of Mon1, an ortholog of Mon1, in a human fungal pathogen, . Mutation in resulted in hypersensitivity to thermal stress. The deletion mutant exhibited increased sensitivity to cell wall and endoplasmic reticulum stress. However, the deletion mutant showed more resistance to the antifungal agent fluconazole. studies demonstrated that compared to the wild-type strain, the deletion mutant attenuated virulence in the insect model. Moreover, the deletion mutant was avirulent in the murine inhalation model. These results demonstrate that Mon1 plays a crucial role in stress survival and pathogenicity in .
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http://dx.doi.org/10.1080/12298093.2018.1468053 | DOI Listing |
Commun Biol
January 2025
U.S. Department of Agriculture, Agriculture Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, USA.
The remarkable diversity of insect pigmentation offers a captivating avenue for studying evolution and genetics. In tephritids, understanding the molecular basis of mutant traits is also crucial for applied entomology, enabling the creation of genetic sexing strains through genome editing, thus facilitating sex-sorting before sterile insect releases. Here, we present evidence from classical and modern genetics showing that the black pupae (bp) phenotype in the GUA10 strain of Anastrepha ludens is caused by a large deletion at the ebony locus, removing the gene's entire coding region.
View Article and Find Full Text PDFVirulence
January 2025
The Key Laboratory for Extreme-Environmental Microbiology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China.
Oxalic acid (OA), an essential pathogenic factor, has been identified in several plant pathogens, and researchers are currently pursuing studies on interference with OA metabolism as a treatment for related diseases. However, the metabolic route in remains unknown. In this study, we describe D-erythroascorbic acid-mediated OA synthesis and its metabolic and clearance pathways in rice blast fungus.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-construction by Ministry and Province), Hubei Engineering Research Center for Pest Forewarning and Management, College of Agriculture, Yangtze University, Jingzhou 434025, Hubei, China. Electronic address:
Autophagy is a conserved and unique degradation system in eukaryotic cells, which plays crucial roles in the growth, development and pathogenesis of Fungi. Despite that, it is poorly understood in Fusarium graminearum currently. Here, we identified an autophagy gene FgAtg27 from F.
View Article and Find Full Text PDFJ Biol Chem
January 2025
Genomics Research Center, Academia Sinica, Taipei, Taiwan; Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan; Department of Biochemical Science and Technology, National Taiwan University, Taipei, Taiwan; Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Institute of Biological Chemistry, Academia Sinica; Institute of Biochemical Sciences, National Taiwan University; Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Taiwan University and Academia Sinica, Taipei, Taiwan. Electronic address:
Tauopathies cover a range of neurodegenerative diseases in which natively unfolded tau protein aggregates and spreads in the brain during disease progression. To gain insights into the mechanism of tau structure and spreading, here, we examined the biochemical and cellular properties of human full-length wild-type and familial mutant tau, ΔK280, with a deletion at lysine 280. Our results showed that both wild-type and mutant tau are predominantly monomeric by analytical ultracentrifugation.
View Article and Find Full Text PDFAdv Biol Regul
December 2024
Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy.
TP53 is normally a tumor suppressor. However, it is mutated in at least 50% of human cancers. Usually, we assume that mutation of the TP53 is associated with loss of sensitivity to various drugs as in most cases wild type (WT) TP53 activity is lost.
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