Implication of organic acids in the long-distance transport and the accumulation of lead in Sesuvium portulacastrum and Brassica juncea

► Sesuvium portulacastrum is a halophyte species more tolerant to Pb than Brassica juncea. ► S. portulacastrum accumulated more Pb in the shoots than B. juncea. ► Citrate is highly implicated in Pb translocation.