Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 293, P. 118020 - 118020

Published: March 1, 2025

To cope with environmental stresses, organisms often adopt a memory response upon primary stress exposure to facilitate quicker and/or stronger reaction recurring stresses. Somatic is essential in dealing contemporary stress. The earliest sign of somatic change gene transcription levels, which alters physiology and phenotype better Sulfide common pollutant; however, some have successfully colonized sulfur-rich environments. Whether plays important role sulfide adaptation remains unclear. In this study, determine whether Urechis unicinctus, sulfur-tolerant organism, retains the previous stress, we simulated repetitive stress/recovery system. results showed that tolerance U. unicinctus was significantly increased after priming 50 µM sulfide. Further, transcriptional genes (TMGs) involved regulating were identified, classified according their expression patterns, functionally analyzed. TMGs metabolism, sugar protein homeostasis pathway an enhanced response, whereas those related DNA repair demonstrated modified pattern. Our study indicated priming, mediates plasticity accelerate adaptation.

Language: Английский