Project description:To facilitate new studies in the Amaryllidoideae subfamily, we present AmarylOmicBase, a unified transcriptomic database that integrates assemblies, annotations, and expression profiles from 39 studies, covering 27 Amaryllidoideae species and 4 hybrid cultivars across 13 genera of Amaryllidoideae. The AmarylOmicBase (v2, https://doi.org/10.5281/zenodo.20349158) includes de novo assemblies generated from published raw data using Trinity or IsoSeq workflows and provides standardized functional annotation (trinotate) and quantitative expression datasets. Preprint - https://doi.org/10.1101/2025.11.24.690262
Project description:Humans exhibit significant phenotypic differences from other great apes, yet pinpointing the underlying genetic changes has been limited by incomplete reference genomes and a reliance on a single assembly to represent a species. We aligned 20 telomere-to-telomere (T2T) assemblies spanning great ape evolution and variation to define 1,596 consensus human ancestor quickly evolved regions (Consensus HAQERs), regions that diverged rapidly between the human-chimpanzee ancestor and an ancestral node of modern humans. Unlike prior HAQER sets based on single assemblies for a species, Consensus HAQERs incorporate population variation, reducing the likelihood of intraspecies variation appearing to be interspecies divergence. These regions contain signatures of elevated mutation rates, ancient positive selection, bivalent regulatory function, and are enriched in disease-linked loci, often emerging in previously inaccessible repetitive DNA. Through multiplex, single-cell enhancer assays, we identify HAQERs as active enhancers in the developing brain and cardiomyocytes, highlighting their potential contributions to human-specific gene regulation.