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Bayesian Inference of Phylogenetic Distances: Revisiting the Eigenvalue Approach.
Bull Math Biol
January 2025
Section of Epidemiology, University of Copenhagen, Copenhagen, Denmark.
Using genetic data to infer evolutionary distances between molecular sequence pairs based on a Markov substitution model is a common procedure in phylogenetics, in particular for selecting a good starting tree to improve upon. Many evolutionary patterns can be accurately modelled using substitution models that are available in closed form, including the popular general time reversible model (GTR) for DNA data. For more complex biological phenomena, such as variations in lineage-specific evolutionary rates over time (heterotachy), other approaches such as the GTR with rate variation (GTR ) are required, but do not admit analytical solutions and do not automatically allow for likelihood calculations crucial for Bayesian analysis.
View Article and Find Full Text PDFUnveiling remarkable bacterial diversity trapped by cowpea (Vigna unguiculata) nodules inoculated with soils from indigenous lands in Central-Western Brazil.
Braz J Microbiol
January 2025
Department of Biochemistry and Biotechnology, Universidade Estadual de Londrina, PR-445, Km 380, C.P. 10.011, CEP 86.057-970, Londrina, Paraná, Brazil.
Cowpea (Vigna unguiculata) is recognized as a promiscuous legume in its symbiotic relationships with rhizobia, capable of forming associations with a wide range of bacterial species. Our study focused on assessing the diversity of bacterial strains present in cowpea nodules when inoculated with soils from six indigenous lands of Mato Grosso do Sul state, Central-Western Brazil, comprising the Cerrado and the Pantanal biomes, which are known for their rich diversity. The DNA profiles (BOX-PCR) of 89 strains indicated great genetic diversity, with 20 groups and 23 strains occupying single positions, and all strains grouped at a final similarity level of only 25%.
View Article and Find Full Text PDFComprehensive genomic analysis of SmbHLH genes and the role of SmbHLH93 in eggplant anthocyanin biosynthesis.
Plant Cell Rep
January 2025
School of Life Science, Anhui Agricultural University, Hefei, 230036, China.
SmbHLH93can activate the expression of SmCHS, SmANS, SmDFR and SmF3H.Overexpression of SmbHLH93promotes anthocyanin biosynthesis. SmbHLH93can interact with SmMYB1 to promote anthocyanin accumulation.
View Article and Find Full Text PDFMolecular Epidemiology and Antifungal Susceptibility Profile of Candidozyma Isolates From Argentina.
Mycoses
January 2025
Departamento Micología-Instituto Nacional de Enfermedades Infecciosas "Dr. Carlos G. Malbrán", Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
Background: Epidemiological surveillance of Candidozyma sp. has become important because many species of this new genus have been reported to be responsible for nosocomial outbreaks and to exhibit elevated minimal inhibitory concentrations (MIC) to one or more classes of antifungal drugs.
Objectives: To describe the genetic relationships among Argentinian clinical isolates belonging to the Candidozyma genus and to study the molecular mechanisms associated with antifungal resistance.
Identification of novel rodent and shrew orthohepeviruses sheds light on hepatitis E virus evolution.
Zool Res
January 2025
Institute of Preventive Medicine, School of Public Health, Dali University, Yunnan Key Laboratory of Screening and Research on Anti-pathogenic Plant Resources from Western Yunnan, Yunnan Key Laboratory of Zoonotic Disease Cross-border Prevention and Quarantine, Dali, Yunnan 671000, China. E-mail:
The family has seen an explosive expansion in its host range in recent years, yet the evolutionary trajectory of this zoonotic pathogen remains largely unknown. The emergence of rat hepatitis E virus (HEV) has introduced a new public health threat due to its potential for zoonotic transmission. This study investigated 2 464 wild small mammals spanning four animal orders, eight families, 21 genera, and 37 species in Yunnan Province, China.
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