Integrated Assessment of Metal-Related Toxicity in a Sentinel Marine Plant, <i>Posidonia oceanica</i>, Under Realistic Multi-Element Exposure.

GST showed a similar but less robust pattern compared to other biomarkers, with strong correlations that did not reach statistical significance.

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Intermediate leaves showed a trend toward increased CAT activity, not reaching statistical significance, along with minimal damage, suggesting effective detoxification, whereas adult leaves accumulated higher levels of Fe, Ni, and Pb, but displayed moderate stress responses.

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Lipid peroxidation, expressed as TBARS, also showed highly significant differences among leaf classes ( Figure 1 ).

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