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Research Paper | Biological Sciences | Saudi Arabia | Volume 12 Issue 11, November 2023
The Effects of Salinity on the Accumulation of Elements in Senna italica Leaves
Noura M. Al Shalawi | Al-Zahrani H. S.
Abstract: The influence of different concentrations of sodium chloride at 0 (control), 10, 20, 50, 100, 150, and 200 mM. on elements accumulation of Senna italica Mill leaves was studied. The plant internal levels of the essential elements were remarkably affected by salinity. Total nitrogen contents of leaves slightly increased at salinity of 10 mM, while decreased with the increased salinity, comparing to the control. Phosphorus content of leaves was not significantly affected by the different treatments. Sodium accumulation in leaves was remarkably enhanced by salinity. By the fourth harvest sodium level reached (8 - 10), (9 - 11) and (8 - 10) folds in leaves as compared to the control. Potassium and magnesium contents of leaves increased at salinity of 10 and 20 mM but decreased at higher levels of salinity and as plant aged, comparing to the control. Calcium accumulation in leaves enhanced under salinity of 10 - 50 mM in most harvests as salinity increased. Iron content of leaves reduced by salinity especially at levels higher than 100 mM. Zinc content decreased in leaves as salinity increased and plant aged. Copper level in leaves was not significantly affected by treatments. Chlorides accumulated in leaves, as salinity increased. By the fourth harvest their levels attained 5.4 folds in leaves, as compared to the control. Finally. Senna italica could tolerate salinity at levels of 10 - 50 mM. The plant accumulated sodium, chlorides, at high levels in the leaves as a physiological mechanism to tolerate salinity. In addition, since phosphorous, potassium and magnesium were not significantly affected, this may be a good tool in plant growth in saline environment.
Keywords: Senna italica, salinity, elements accumulation, physiological mechanism, tolerate salinity
Edition: Volume 12 Issue 11, November 2023,
Pages: 734 - 740