Lead (Pb) accumulates both in roots and leaves of plants, but the concentration is greater in roots than leaves. Please go through the PDF attachments.
In resistant plants, Pb accumulates in roots and little in leaf. In susceptible plants, Pb accumulates all over the plant. Pl. also read phytochelators
In addition, please check this link -
Improving the phytoextraction capacity of plants to scavenge metal(loid)-contaminated sites
Article Improving the phytoextraction capacity of plants to scavenge...
Lead(Pb) is a heavy metal considered in plant nutrition as a minor or trace element. lead is required in small proportion and is therefore needed in small concentrations in the leaves but it may accumulate in large amount in the roots. this is why it is possible to phytoextract (use plant roots to remove it from soils where it is in abundance or use plant roots to remove excess lead or phytoremediation in pb contaminated soils using specific plants.
The plant could accumulate the lead in whole body, so in roots, and in leaves also.
I am studying the accumulation of silver in the roots and leaves, however I have read articles reporting the accumulation of a large number of metals in the leaves and roots. And, consequently, adventitious roots begin to emerge. This depends on the concentration of the metal to which the plant is exposed
Plants do not readily absorb large amounts
of lead, and the amount they do absorb depends
on the species and variety of plant, the chemical
composition of the soil, the amount of lead in the
soil, and the soil temperature. Because so many
factors influence how much lead a plant absorbs,
it is difficult to predict how much lead a plant will
contain based on the amount of lead in the soil.
However, lead is generally slow to move within a
plant ( from roots to leaves), and most of the lead
that does enter a plant accumulates in the fine
roots and secondarily in the leaves, though there
are some exceptions. Fruits such as tomatoes,
peppers, melons, okra, apples, and oranges and
seeds such as corn, peas, and beans generally
have the lowest lead concentrations and are the
safest portions of the respective plants to eat if
grown in lead-contaminated soils
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