Table 2.

Transfer of various elements from hosts to parasitic plants. No simple relationship exists for the proportion of chemical elements found in hosts and parasites: according to the scarce data available in the literature, a certain element in the same parasite can apparently range from less than 10% of the host concentration up to almost 1000-fold, corresponding to a ratio of concentration in the parasite divided by the concentration in the host of 0.1 to almost 10.

Parasite-Host Pair	Ratios of Concentrations (Parasite/Host)	Note	Reference
Cuscuta californica-multiple	Ni: 0.3–0.6 Cu: 0.9–1.3 Zn: 0.9–1	Depending on host species	[94]
Cuscuta campestris-Daucus carota	Cd: 0.1–0.4 Zn: 0.4–5.3 Cu: 0.5–1	Depending on duration of treatment and host organ	[53]
Odontites lutea-Cistus sp.	Pb: 0.6–1.3 Cu: 1.2–1.8 Zn: 0.6–0.9	Depending on soil pollution	[52]
Plicosepalus acaciae-multiple	Na+: 0.3–9.4 Cl−: 0.3–5.1	Depending on host species and host organ	[54]