Gene expression changes in the seagrass Cymodocea nodosa individuals in response to aquatic acidification

Human activities have caused a rise in atmospheric carbon dioxide (CO2) levels, leading to greater absorption of CO2 by oceans and causing ocean acidification. This phenomenon, marked by a reduction in pH, represents substantial risks to marine ecosystems, including seagrass meadows. Seagrasses are vital elements of coastal ecosystems, performing important functions in carbon storage, stabilizing shorelines, and preserving biodiversity; however, reactions to ocean acidification are not well understood, especially in terms of molecular.This research study examined alterations in gene expression within seagrass meadows, namely the species Cymodocea nodosa, in reaction to simulated ocean acidification conditions. Climate chamber system to adjust CO2 levels to simulate future projections of ocean acidification, specifically following the RCP 8.5 scenario. Gene expression dynamics were assessed by collecting samples at different time intervals across a 36-hour period.Research has demonstrated that genes related to photosynthesis are suppressed quickly after being exposed to increased amounts of CO2. Gene expression levels were found to change often over time, which is crucial for adaptation and acclimatization. However, antioxidant genes have varied responses to ocean acidification, with CAT and SOD being downregulated in distinct ways.Our findings offer valuable insights into the molecular mechanisms of seagrass responses to ocean acidification. It highlights the significance of examining short-term responses when evaluating the susceptibility of coastal ecosystems to climate change.