Two domesticated species of rice shaped the population structure of Xanthomonas oryzae pv. oryzae in Africa

This study reveals that the population structure and evolutionary history of the bacterial leaf blight pathogen *Xanthomonas oryzae* pv. *oryzae* in Africa were shaped by the independent domestication of African rice (*Oryza glaberrima*) and its subsequent replacement by Asian rice (*Oryza sativa*), driving distinct genetic diversification and host adaptation mechanisms in the pathogen.

Quibod, I. L., Sciallano, C., Auguy, F. + 20 more2026-02-20🧬 genomics

A unified model of aneuploid karyotype dynamics

By integrating experimental measurements of aneuploidy rates and fitness in budding yeast with computational modeling, this study establishes a unified model revealing that while canonical reversion rarely impacts population dynamics, a distinct, chromosome-specific mechanism involving unresolved linkages and breakage-driven repair drives high-frequency reversion for specific chromosomes.

Henault, M., Wood, L. M., Heasley, L. R.2026-02-20🧬 genomics

A Plasmodium knowlesi A1-H.1 transcriptome time course focusing on the late asexual blood stages

This study presents the first transcriptome time-course of the *Plasmodium knowlesi* A1-H.1 strain grown in human erythrocytes, revealing strong genome-wide conservation of temporal gene expression with *P. vivax* and providing an interactive webtool to facilitate comparative functional studies using *P. knowlesi* as a model for *P. vivax*.

De Meulenaere, K., Diaz-Delgado, D., Monsieurs, P. + 4 more2026-02-19🧬 genomics

Crosstalk between Ovate Family Proteins, plant hormones, and microtubule dynamics regulating fruit shape

This study elucidates the conserved regulatory mechanisms governing fruit shape in peach and apple by demonstrating how Ovate Family Proteins (OFPs) interact with brassinosteroid signaling and microtubule dynamics to orchestrate distinct flat versus oblong phenotypes, thereby providing a refined framework for breeding fruit morphology in Rosaceae crops.

Coleto-Alcudia, V., Garcia-Gomez, B. E., Dujak, C. M. + 2 more2026-02-19🧬 genomics

Lessons learned from manual curation of thousands of gene models in the nematode Pristionchus pacificus

Through the community-driven manual curation of over 7,500 gene models in *Pristionchus pacificus*, this study highlights critical limitations in current automated annotation pipelines—such as assembly errors, artificial transcript fusions, and homology-based error propagation—and offers valuable insights to improve future genome annotation efforts across diverse species.

Roedelsperger, C., Agyal, N., Quiobe, S. P. + 3 more2026-02-19🧬 genomics

Effects of the Hypomethylating Agent Guadecitabine on Peripheral Blood Mononuclear Cell Methylomes and Immune Cell Populations in Small-Cell Lung Cancer Patients

This study demonstrates that treating small-cell lung cancer patients with the hypomethylating agent guadecitabine induces global DNA hypomethylation in peripheral blood mononuclear cells, alters key immune-related signaling pathways, and significantly shifts immune cell populations, highlighting the potential of blood-based methylomic analysis for monitoring treatment response.

Nephew, K. P., Farid, E. A., Zhang, S. + 4 more2026-02-19🧬 genomics

Portello: Making global assembly more effective for rare-disease whole genome sequencing

Portello is a novel assembly-based mapping tool that transfers read alignments from de novo assembly contigs to a standard reference genome, thereby unifying assembly and reference-based inferences to improve variant calling accuracy, enable direct read-level review, and facilitate the interpretation of complex genomic regions for rare-disease whole genome sequencing.

Saunders, C. T., Kronenberg, Z., Holt, J. M. + 2 more2026-02-19🧬 genomics

An information content principle explains regulatory patterns of gene expression across human tissues

By applying the Minimum Description Length principle and maximum parsimony, this study reveals that regulatory demands scale nonlinearly with tissue specificity—peaking in intermediate-specificity genes—and uncovers distinct regulatory strategies where selective genes function as on/off switches while ubiquitous genes act as fine-tuning knobs, all of which vary systematically with gene age.

Golomb, R., Yoles, M., Fishilevich, S. + 5 more2026-02-19🧬 genomics

Whole genomes reveal how Andean climate history shapes genetic diversity and modern conservation risk in South American pumas

By integrating whole-genome sequencing with paleoclimate history, this study reveals how Andean climatic oscillations shaped distinct demographic trajectories and genetic risks in Ecuadorian pumas, providing a framework for targeted conservation strategies that balance corridor restoration with genetic rescue.

Chavez, D. E., Correa-Zanotti, C., Saenz, C. + 8 more2026-02-19🧬 genomics