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| Fig. 1.6.8. Sequestration of salt in the vacuole. A Salt succulence in mangrove plants: development of salt-storage tissue from the spongy mesophyll of the leaves. Right Young leaf with still small, isodiame-trical spongy parenchyma cells. Left Cross section of a fully grown leaf with large, elongated spongy parenchyma cells, in the vacuoles of which salt is deposited. The stone cell-like idioblast serves to stiffen the tissue. B "Bladder hairs" of the halo-phyte Atriplex hymenelytra (Chenopodia-ceae). The salt is sequestered in the large vacuoles of the numerous bladder hairs and is thereby removed from the mesophyll. (A, after Larcher 1994; B, from Luttge et al. 1994)

Idioblast

Vascular bundle Intracellular space l

Palisade parenchyma

Spongy parenchyma

200 ^im

Idioblast l

Palisade parenchyma

Spongy parenchyma

200 ^im

Vascular bundle Intracellular space

Salicornia prostata Other

Salicornia prostata Other

Sucrose

Glucose

Sucrose

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