Localization of aluminium in the leaves of some aluminium-accumulating species |
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Authors: | M Haridasan T I Paviani Ivan Schiavini |
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Institution: | (1) Departmento de Biologia Vegetal, Universidade de Brasília, Caixa Postal 153081, Brasília, DF, Brazil |
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Abstract: | Summary Transverse sections of leaves of some aluminium-accumulating and nonaccumulating species of the cerrado vegetation of central
Brazil were coloured using aluminon to identify the tissues where aluminium occurs or is deposited. None of the tissues of
the nonaccumulating species showed evidence of high concentrations of Al. All of the aluminium accumulating species showed
high concentrations of Al in all of the elements of the phloem of the midrib and the secondary veins and total absence of
it in the vessel members, xylem fibres and the palisade parenchyma. Walls and contents of the collenchyma of the midrib, epidermal
cells, guard cells of the stomata and spongy parenchyma showed evidence of high concentrations of Al in the accumulating species. |
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Keywords: | Aluminium-accumulating plants Aluminium localization Cerrado vegetation |
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