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Human T-cell lymphotropic virus type 1 (HTLV-1) is a globally-spread virus. It is estimated that there are about 5–10 million infected people in the world. HTLV is endemic in Chile, with higher seroprevalence among indigenous people. However, little is known about HTLV-1 genetic diversity, its introduction and dispersion in this country. To gain insights into these issues, a phylogenetic dating analysis was conducted based on Chilean and closed related long terminal repeat sequences. The time tree reconstruction showed that the introduction of HTLV-1aA occurred several times in Chile. It was hypothesized that these introductions took place at least in two different historical moments: (i) during the ancient human migrations and (ii) during/after the European colonization of South America. The present study contributes toward understanding the evolutionary history of HTLV-1 in Chile and South America.
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http://dx.doi.org/10.1016/j.ijid.2020.07.037 | DOI Listing |
Mol Biol Rep
September 2025
ICAR-Central Institute of Fisheries Education, Versova, Mumbai, 400061, India.
Background: Labeo fimbriatus (Bloch, 1795) is a medium-sized South Asian minor carp with ecological significance and emerging aquaculture potential, particularly in polyculture systems with Indian major carps. Despite its wide distribution, it remains underrepresented in phylogenetic studies, and limited genomic resources are available. Here, we report the complete mitochondrial genome sequence of L.
View Article and Find Full Text PDFEnviron Sci Technol
September 2025
Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, Hangzhou 310058, China.
Arsenic (As) is a prevalent toxic element, posing significant risks to organisms, including microbes. While microbial arsenic detoxification has been extensively studied in bacteria, archaeal mechanisms remain understudied. Here, we investigated arsenic resistance genes in , one of the most abundant archaeal lineages on Earth.
View Article and Find Full Text PDFPlant Commun
September 2025
College of Horticulture, Bioinformatics Center, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing 210095, China. Electronic address:
Molecular phylogenetics illustrates the evolution and divergence of green plants by employing sequence data from various sources. Interestingly, phylogenetic reconstruction based on mitochondrial genes tends to exhibit incongruence with those derived from nuclear and chloroplast genes. Although the uniparental inheritance and conservatively retained protein-coding genes of mitochondrial genomes inherently exclude certain potential factors that affect phylogenetic reconstruction, such as hybridization and gene loss, the utilization of mitochondrial genomes for phylogeny and divergence time estimation remains limited.
View Article and Find Full Text PDFMol Phylogenet Evol
September 2025
Centro Ricerca e Innovazione, Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all'Adige, Italy. Electronic address:
Among the different mechanisms triggering diversification processes, chromosomal rearrangements that generate karyotypic changes are common in plants. Luzula (Juncaceae) is among the few angiosperm genera with holocentric chromosomes, which can undergo chromosome fission (agmatoploidy) or fusion (symploidy), resulting in karyotypes with different chromosome numbers and sizes. In this study, 3RAD genome-wide sequencing data and plastid sequences were used to explore evolutionary trends and patterns of genetic diversification among diploid taxa of Luzula sect.
View Article and Find Full Text PDFBMC Genomics
September 2025
Center for Agricultural Genetic Resources Research, Shanxi Agricultural University; Key Laboratory of Crop Genetic Resources and Germplasm Development on the Loess Plateau, Ministry of Agriculture and Rural Affairs, Taiyuan, 030031, China.
Background: Sucrose nonfermenting 1-related protein kinase 2 (SnRK2) proteins constitute a family of plant-specific serine/threonine kinases that play critical roles in mediating abscisic acid (ABA) signaling and responses to abiotic stresses, including drought and salinity. Nevertheless, systematic bioinformatics analysis and expression profiling of the SnRK2 gene family in broomcorn millet (Panicum miliaceum L.) have not yet been reported.
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