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Osmoregulatory effect in some metabolites in response to salinity in Atriplex halimus var. schweinfurthii (Chenopodiaceae) With 4 Figures and one Table
Author(s) -
Sadek L. A.
Publication year - 1993
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19931040120
Subject(s) - salinity , proline , atriplex , biology , osmoregulation , botany , nutrient , ecology , amino acid , biochemistry
The present work was conducted to elucidate the biochemical adaptation, and revealed that some of the parameters used serve as good indicators of salinity tolerance and drought resistant in Atriplex halimus L. var. schweinfurthii which distributed in the Mediterranean desert of Egypt. The growth of these plants was not affected by salinity. The metabolic role in osmoregulation is achieved through the accumulation of minerals and proline. Salt stress stimulates the accumulation of all these metabolic products. These accumulation decreased rapidly in plants transferred back to control medium. As suggested for other xerophytic species, it could be assumed that the high tolerance of A. halimus to salinity plays an important role in its ability to endure periods of drought. The role of mineral nutrients and proline accumulation in osmoregulation was discussed.