Is 5-aminolevulinic acid concentration in plants related to soil salinity? A test with 17 native species of Bahrain

Abstract The objective of this study was to determine the effect of soil salinity on the concentration of ALA in 17 native plants species collected from different locations across the Kingdom of Bahrain. ALA was extracted from the various plant species and measured by flourometric analysis. ALA concentrations ranged between 21.53 ± 2.05 μg g −1 and 66.03 ± 4.42 μg g −1 . The highest ALA concentration was found to be in Aizoon canariense whereas the lowest concentration was recorded in Avicennia marina . Significant difference ( P P