To evaluate the ability of J. curcas to translocate Hg from the roots to the aerial parts of the plant, the TF was calculated (Table 3).
The relative TFs for different exposure times in decreasing order
were TF month 2 > TF month 1 > TF month 3 > TF month 4. Several
authors have reported that Hg translocation from the roots to the
aerial parts of the plant occurs when the TF is higher than 1, a value
that is characteristic of accumulator plants (Baker, 1981; Raskin
and Ensley, 2000; Tu et al., 2003).