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Paper Details

Effect of Salicylic Acid on Photosynthetic Pigments and Some Biochemical Content in Vigna Seedlings under Cadmium Stress

Verma Pooja, Amra Ram and B.R. Gadi*

Journal Title:Journal of Chemical, Biological and physical sciences

The objective of present study was to investigate the possible mediatory role of salicylic acid (SA) under cadmium toxicity in seed germination, membrane stability and some biochemical content in in-vitro grown seedlings of Vigna radiata. Cadmium chloride treatments (CdCl2; 0.0, 25, 50 and 100?M) decreased seed germination, chlorophyll stability index (CSI), membrane stability index (MSI), photosynthetic pigments and soluble protein content, while increased lipid peroxidation (malondialdehyde -MDA), proline and total soluble sugars content. SA (0.25mM) decreased the germination percentage of seeds, photosynthetic pigment and MDA content while increased soluble protein, proline and total soluble sugars content and percentage of CSI and MSI in V. radiata seedlings. Salicylic acid pretreatment decreased the toxic effect of cadmium manifested through lower lipid peroxidation by decrease in MDA content while increased the proline and sugars content and percentage of CSI and MSI. SA also increased the soluble protein content in CdCl2 treated seedlings. Present study shows that SA ameliorates the toxic effects of CdCl2 by increasing the CSI, MSI and proline content while decreasing the MDA content.