bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: June 27, 2024
Abstract In an era characterized by rapidly changing and less-predictable weather conditions fueled the climate crisis, understanding mechanisms underlying local adaptation in plants is of paramount importance for conservation species. As frequency intensity extreme precipitation events increase, so are flooding resulting from soil water saturation. The deriving onset hypoxic stress one leading causes crop damage yield loss. By combining genomics remote sensing data, today it possible to probe natural plant populations that have evolved different rainfall regimes look molecular hypoxia. Here, using environmental genome-wide association study (eGWAS) on 934 non-redundant georeferenced Arabidopsis ecotypes, we identified functional variants gene MED25 BINDING RING-H2 PROTEIN 1 ( MBR1 ). This a ubiquitin-protein ligase regulates MEDIATOR25 (MED25), part multiprotein complex interacts with transcription factors which act as key drivers response Arabidopsis, namely RELATED TO AP2 proteins, RAP2.2 RAP2.12. Through experimental validation, show differential impact stability and, turn, tolerance. Our also highlights pivotal role MBR1/MED25 module establishing comprehensive response. findings candidates can be effectively mined large datasets. thus supports need integration forward reverse genetics robust physiology validation outcomes.
Language: Английский