Tissue-specific modulation of the proteome, phytochelatin synthesis, and antioxidant enzyme activities of tomato in response to cadmium by using reciprocal grafting

Cadmium (Cd) is considered one of the most threatening soil and water contaminants in agricultural settings. This heavy metal is known to induce multiple effects in plants, including antioxidant responses (Marques et al. 2019) and proteomic changes (Marques et al. 2021a,b). In the present work, we have been evaluating reciprocal grafting combinations of tomato genotypes with contrasting Cd tolerance. Analyses of enzymatic antioxidant activities, proteomics and phytochelatin quantification will be performed, in addition to assessment of Cd accumulation and oxidative stress indicators. Here we present some results regarding organ-specific contributions to antioxidant responses in reciprocally grafted tomato plants.