Mitigating effect of salicylic acid and nitrate on water relations and osmotic adjustment in maize, cv. Lluteño exposed to salinity

Abstract

-and salicylic acid (SA) on the detrimental effects of salt stress by studying the water status of plants of maize grown in Hoagland´s medium with NaCl 100 mM as the saline component, to which SA and NO 3 -were added in different concentrations as mitigating agents. We evaluated water potential (Ψ w ), osmotic potential (Ψ s ), relative water content (RWC), turgor potential (Ψ p ), and the osmotic adjustment (OA) of leaves and roots. SA 0.5 mM mitigated the effects of salinity by increasing the Ψ w of the leaf, the Ψ s of the root, the Ψ p of the leaf, RWC and OA of the leaf; while NO 3 -was only effective in combination with SA, mitigating the effects of salinity by increasing RWC and OA. However, the interaction SA-NO 3 -reduced leaf Ψ w and Ψ s of leaves and roots. Mitigation of salt stress was also detected by a positive effect on plant growth. The greatest effect on growth was produced by the NO 3 -treatments and SA 0.5 mM combined with NO 3 -.

Tolerance induction to saline stress in papaya seeds treated with potassium nitrate and sildenafil citrate

“…KNO 3 and SC are growth regulators that induce the plants to tolerance and development in saline environments, as observed for corn (ESCOBAR et al, 2010) and wheat (ZHENG et al, 2009). Table 1.…”