Akademik Veri Yönetim Sistemi
Priming, Stress & Epigenetic Memory: an integrated view from model plants to crops, Amsterdam, Hollanda, 9 - 10 Şubat 2026, ss.60, (Özet Bildiri)
Plants possess the ability to retain information from previous stress encounters, enabling a more efficient response upon re-exposure, a phenomenon defined as stress memory. It is known that priming activates molecular and epigenetic mechanisms facilitating memory formation; however, the underlying regulatory pathways are not yet fully understood. In this study, Arabidopsis thaliana plants were subjected to salt priming with 50 mM NaCl for 24 hours, followed by a recovery period and subsequent salt stress exposure. Primed plants exhibited improved physiological performance and reduced stress-induced damage compared to non-primed plants, indicating successful acquisition of salt stress memory. To elucidate the molecular basis of this response, transcriptomic profiling and chromatin immunoprecipitation (ChIP) analyses were performed. RNA-seq results revealed that metabolic pathways associated with alpha-linolenic acid metabolism, diterpenoid biosynthesis, and plant hormone signal transduction were significantly modified in primed plants. Moreover, histone modification patterns at key genes were examined through ChIP-qPCR, with particular focus on the activating H3K4me3 and repressive H3K27me3 marks. Genes including OPR3, AOC1, and LOX3 displayed coordinated transcriptional and chromatin changes consistent with priming-induced stress memory formation. These findings highlight key regulators involved in establishing salt stress memory and provide mechanistic insights that may contribute to the development of crops with enhanced stress resilience.