Leaf anatomical adaptation of some spontaneous species of the Sahara (El Oued region, Algeria)

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Leaf anatomical adaptation of some spontaneous species of the Sahara (El Oued region, Algeria)

Kherraz Khaled, Ghemam Amara Djilani, Laouadj Hacene, Atallah Merzaga, Fridjat Zobida
Int. J. Biosci.14( 5), 507-514, May 2019.
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This study aimed to show the correlation between anatomical and physiological response and the adaptation in the event of drought and salinity of six Saharan spontaneous species in the region of El Oued (Algeria) these plants are Zygophyllum album L, Limoniastrum guyonianum, Sueda fructicosa, Anabasis articulate, Thymelea microphylla and Halocnemumstrobilaceum. The anatomical structure of this species was studied using fresh materials (roots, stems and leaves) by free-handing transverse directions. The sections were stained by double staining with methyl green and Congo red.  The epidermis of the studied plants represents three types of stomata that are the paratetracytic, the anomocyticand the Paracytic type.The results showed that the plants studied adapted with the stress to underline the different strategies by the emergence of distinct anatomical structures which appear by the presence of a thick cuticle and a layer of trichomes, the abundance of the palissadic parenchymes and aquifers, the stomata are placed in the crypts. Two species contain calcium oxalate crystals L. guyonianum and A. articulata.


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