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AI-summarized plant biology research papers from bioRxiv

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DNA methylation mediates transcriptional stability and transposon-driven trans-regulation under drought in wheat

Authors: Reynolds, I. J., Barratt, L. J., Harper, A. L.

Date: 2025-12-05 · Version: 1
DOI: 10.64898/2025.12.04.692301

Category: Plant Biology

Model Organism: Triticum aestivum

AI Summary

The study used paired whole‑genome bisulphite sequencing and RNA‑seq on wheat landraces to investigate how DNA methylation patterns change during drought stress, revealing antagonistic trends across cytosine contexts and a key demethylation role for ROS1a family members. Gene‑body methylation correlated positively with expression but negatively with stress‑responsive changes, while drought‑induced hyper‑methylation of specific transposable elements, especially the RLX_famc9 LTR retrotransposon, appears to modulate downstream gene regulation via siRNA precursors.

drought stress DNA methylation Triticum aestivum ROS1a demethylase transposable elements

Mycotoxin-driven proteome remodeling reveals limited activation of Triticum aestivum responses to emerging chemotypes integrated with fungal modulation of ergosterols

Authors: Ramezanpour, S., Alijanimamaghani, N., McAlister, J. A., Hooker, D., Geddes-McAlister, J.

Date: 2025-07-01 · Version: 1
DOI: 10.1101/2025.06.30.662327

Category: Plant Biology

Model Organism: Triticum aestivum

AI Summary

The study used comparative proteomics to examine how the emerging 15ADON/3ANX chemotype of Fusarium graminearum affects protein expression in both wheat and the fungus. It identified a core wheat proteome altered by infection, chemotype‑specific wheat proteins, and fungal proteins linked to virulence and ergosterol biosynthesis, revealing distinct molecular responses influencing disease severity.

Fusarium head blight 15ADON/3ANX chemotype proteomics Triticum aestivum Fusarium graminearum