PJB-2024-319
Foliar Application of Nano Titanium dioxide Mitigate Drought stress in Moringa peregrina
Faheema Khan
Abstract
Drought stress is one of the most significant environmental factors limiting plant growth, and productivity. In this regard, application of Nano fertilizers is one of the favorable emerging methods for reducing abiotic stresses. The present study aimed to investigate the effect of different concentrations of TiO2 NPs through the adverse impact of drought stress on the morphological, physiological and antioxidative response of Moringa peregrina. The suspensions of nano-TiO2 in the following concentration (D=0, T1=50, T2=100 and T3=200 mg/L) were given as foliar spray to M. peregrina seedling after 4 weeks of emergence for three continuous days. Seedlings were further irrigated with distilled water every 3 days until the relative soil water content reached approximately 30%. Untreated pots (control) were irrigated with tap water continuously. Later morphological and biochemical parameters were studied in triplicates. The obtained results showed that treatment of M. peregrina under drought stress with TiO2 NPs enhanced the total chlorophyll content, total soluble proteins, proline content, and antioxidant enzyme activities in dose dependent manner in compared to non-treated plants. It is concluded from the present study that drought stress induced damages such as oxidative stress and membrane impairment can be ameliorated by foliar application of TiO2 NPs. Therefore, appropriate concentration of TiO2 NPs possibly can be used as an exogenous stimulus for enhancing morphological and biochemical performances in M. peregrina under drought stress.
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