🧬 biology

Three Decades of Genomic Change in FHB Resistance: Haplotype Frequency Trajectories in Northern Plains Wheat (1992-2024)

This study utilizes a haplotype-based framework to analyze three decades of wheat breeding data in the Northern Plains, revealing that Fusarium head blight resistance is highly polygenic and has improved through the directional selection of multiple small-effect resistance alleles without compromising local genetic diversity.

Jason Fiedler, Muhammad Massub Tehseen, Charlotte N Brault, Emily Conley, Andrew Read, Harsimardeep Gill, Andrew Green (…)2026-07-22
🧬 biology

Social stress alters the efficacy of 8-OH-DPAT in zebrafish tests of anxiety-like behavior

This study demonstrates that social stress in zebrafish induces anxiety-like behaviors and oxidative stress in subordinate individuals, which are reversed by the 5-HT1A receptor agonist 8-OH-DPAT, suggesting that the drug's efficacy is modulated by social hierarchy through receptor desensitization and sensitization.

Aurora Rúbria Batista Pantoja, Thaeny Regina Ribeiro Rodrigues, Adriano Oliveira Silva Meneses, Bruna Patrícia Dutra Cos (…)2026-07-22
🧬 biology

SNAPC4-related neurodevelopmental disorder defines a stage-dependent spliceosomopathy with heterogeneous clinical trajectories

This study characterizes SNAPC4-related neurodevelopmental disorder as a heterogeneous, stage-dependent spliceosomopathy caused by loss-of-function variants that destabilize the SNAPc complex and disrupt snRNA transcription, leading to a wide spectrum of clinical and neuroimaging abnormalities.

Marcello Scala, Mohammad Sadegh Shams Nosrati, Alexandra Ruffus, Alireza Dostmohammadi, Amir Hesam Nemati, Francesca Mad (…)2026-07-22
🧬 biology

Engineering a Thermostable Ketone Amination Reductase from Aspergillus oryzae via Evolution-Based Design

By integrating ancestral sequence reconstruction with structure-guided mutagenesis, researchers successfully engineered the *Aspergillus oryzae* reductive aminase to achieve significantly enhanced catalytic activity and thermostability in variants Anc74_7 and Anc75_20.

Jiaying Wu, Chuxin Wang, Wenxuan Zhang, Siqi Xu, Ximan Huang, Li Wen, Peiqin Chen, Chunying Jin, Guangya Zhang, Wei Jian (…)2026-07-22
🧬 biology

Individualised mapping of living human brain mitochondria by MRI reveals signatures of bioenergetic defects.

This study introduces MitoBrainMap, a novel, label-free MRI framework that successfully predicts individualized mitochondrial features in the living human brain, revealing age-related declines, disease-specific alterations in mitochondrial diseases, and meaningful links to systemic physiology and cognitive performance.

Michel Thiebaut de Schotten, Cynthia Liu, Catherine Kelly, Ke Bo, Tor Wager, Eugene Mosharov, Martin Picard2026-07-22
🧬 biology

Functional Gradients of the Neuraxis: Reorganization from Cortex to Spinal Cord

This study utilizes simultaneous corticospinal resting-state fMRI and functional connectivity gradients to integrate the human spinal cord into a unified low-dimensional manifold with the sensorimotor cortex, revealing an asymmetric hierarchical organization where spinal inputs broaden cortical axes while cortical inputs preserve spinal gradients, thereby extending gradient-based mapping beyond the cortex to describe the entire neuraxis as coupled manifolds.

Ekansh Sareen, Nivedya Nambiar, Boris Bernhardt, Dimitri Van De Ville2026-07-22
🧬 biology

Cortical Oscillatory Dynamics Track Sympathetic Arousal and Index Individual Differences in Anxiety

By combining magnetoencephalography with electrodermal activity during a sustained-threat task, this study reveals that specific cortical oscillatory patterns precede sympathetic arousal and that the strength of this neural–autonomic coupling, rather than cortical power or arousal levels alone, serves as a key marker for individual differences in anxiety.

Kristina Pultsina, Ivan Zubarev, Pinja Ronkainen, Tiina Parviainen2026-07-22
🧬 biology

Toxic Effects of Benzo[b]fluoranthene on Developmental Competence of Ovine Oocytes During In Vitro Culture

Exposure to Benzo[b]fluoranthene (B[b]F) impairs ovine oocyte developmental competence by inducing oxidative stress, triggering apoptosis via dysregulated BAX, Caspase3, and BCL2 expression, and suppressing GDF9 and BMP15, ultimately leading to reduced nuclear and cytoplasmic maturation and compromised embryonic development.

Atieh Hajarizadeh, Marziyeh Mehrabadi, Iman Rad, Nastaran Ansari Noghlebari, Niloofar Mohammad Ebrahim, Elaheh Esmaeili2026-07-22
🧬 biology

Prokaryotic (6-4) photolyases depend on a one-way bridge for blue-light triggered electron transfer

This study reveals that prokaryotic 6-4 photolyases utilize a unique tyrosine-mediated electron tunneling bridge and a transient E402-dependent protonation pathway to drive blue-light-triggered FAD photoreduction, while their [4Fe-4S] cluster acts as a short-lived secondary electron injector that rapidly recombines due to the lack of an acceptor.

Lars-Oliver Essen, Christian Joshua Rosner, Florian Trunk, Elisa Seiler, Andrea Bologna, Valeri Fuchs, Hans-Joachim Emme (…)2026-07-22
🧬 biology

Ketamine persists within neuronal compartments long after systemic clearance

By developing genetically encoded fluorescent sensors (iKetSnFRs), researchers discovered that ketamine persists within specific intracellular neuronal compartments long after systemic clearance, providing a mechanistic basis for its rapid and sustained antidepressant effects.

Joseph Cichon, Kallol Bera, Zachary Blumenfeld, Elaine Lin, Meah Ahmed, Eve Fine, Md. Nadim Hossain, Andrey Andreev, Alt (…)2026-07-22