Effects of ambient UVB light on Pacific oyster Crassostrea gigas mantle tissue based on multivariate data

• Published in: Ecotoxicology and Environmental Safety
• Main Authors: Hongce Song, Chaoyi Xie, Meiyun Dong, Yuxuan Zhang, Haifeng Huang, Yijing Han, Yaqiong Liu, Lei Wei, Xiaotong Wang
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2024
• Subjects: UVB; Crassostrea gigas; Mantle tissue; Integrative analysis; Environmental pollution; TD172-193.5; Environmental sciences; GE1-350; Pacific; Pacific oyster
• Online Access: https://doi.org/10.1016/j.ecoenv.2024.116236; https://doaj.org/article/14b8a4a0ece9458f91b68c16922274e3

Ambient ultraviolet radiation (UVB) from solar and artificial light presents serious environmental risks to aquatic ecosystems. The Pacific oyster, Crassostrea gigas, perceives changes in the external environment primarily through its mantle tissue, which contains many nerve fibers and tentacles. Changes within the mantles can typically illustrate the injury of ambient UVB. In this study, a comprehensive analysis of phenotypic, behavioral, and physiological changes demonstrated that extreme UVB radiation (10 W/m²) directly suppressed the behavioral activities of C. gigas. Conversely, under ambient UVB radiation (5 W/m²), various physiological processes exhibited significant alterations in C. gigas, despite the behavior remaining relatively unaffected. Using mathematical model analysis, the integrated analysis of the full-length transcriptome, proteome, and metabolome showed that ambient UVB significantly affected the metabolic processes (saccharide, lipid, and protein metabolism) and cellular biology processes (autophagy, apoptosis, oxidative stress) of the C. gigas mantle. Subsequently, using Procrustes analysis and Pearson correlation analysis, the association between multi-omics data and physiological changes, as well as their biomarkers, revealed the effect of UVB on three crucial biological processes: activation of autophagy signaling (key factors: Ca2+, LC3B, BECN1, caspase-7), response to oxidative stress (reactive oxygen species, heat shock 70, cytochrome c oxidase), and recalibration of energy metabolism (saccharide, succinic acid, translation initiation factor IF-2). These findings offer a fresh perspective on the integration of multi-data from non-model animals in ambient UVB risk assessment.