Determination of The Effect of Salicylic Acid Application on Salinity Stress at Germination Stage of Bread Wheat

Abstract

Under changing climate, abiotic stresses especially salinity have posed serious threats to modern crop production systems of staple crops and chemo-priming with salicylic acid offers a promising remedy. The present study aimed at ameliorating the adverse effects of salt stress through optimization of salicylic acid (SA) for two bread wheat genotypes (DZ17-1 and Empire Plus). The trial was comprised of chemo-priming with different SA levels including 0, 0.5, and 1 mM applied to the seeds of bread wheat genotypes exposed to different salinity levels (0, 50, 100, 150, 200 mM NaCl). The response variables included germination indices, roots length, and weight along with seedling traits. The results revealed that increasing the level of salinity had a negative effect on both genotypes of wheat and all traits studied. The DZ17-7 genotype was found to be more tolerant to salt stress. Among SA concentrations, 1 mM imparted a significant influence on germination, root traits, and seedling parameters. Although SA showed positive effects in salt stress conditions in the study, further studies are needed to clarify the role of SA in providing stress tolerance of plants.

Investigation of Foliar L-Glutamic Application on the Resistance to the Capacity of the SC2121 Tomato Variety (Solanum lycopersicum L.) to Long-Term Salinity Stress

“…Similarly, Haghighia et al (2020) also found that exogenous amino acid implementation given to squash seedlings significantly increased amino acid, protein, and proline content in comparison to the control group. Enzymatic molecules of defense mechanisms such as CAT, POD, and SOD suppress ROS production in plants under stress conditions or they scavenge these compounds from the cells (Ikbal et al, 2019;Yılmaz et al, 2022). In the present study, CAT activity was stimulated by 500GLU and 50NaCl +250GLU, 50NaCl-500GLU, and POD activity decreased in high NaCl and NaCl + GLU (Figure 2B, 2C).…”

“…The L-GLU concentration applied in the study was determined by a preliminary study. For the GLU concentration, it was selected by considering the germination capacity of the seeds which caused an average 50% increase, while the NaCl concentrations were determined by considering the germination capacity that increased by more than 50% and caused more than 50% inhibition (Sadak et al, 2015;Yılmaz et al, 2022).…”

“…The results found for the effects of NaCl and GLU applications on the shoo-root development and leaf numbers are in parallel with the literature. The negative effects of salt stress were reported for tomato (Turhan and Șeniz, 2010), for common beans (Kıpçak et al 2019), and wheat (Yılmaz et al, 2022). However, many researchers also reported that the exogenous applications of amino acids were effective in recovering the plant from salt stress or reducing the negative effects (Jannesari et al, 2016;Alp and Şensoy, 2023).…”

“…20% of cultivated areas and 50% of irrigated areas worldwide are affected by salinity, 10 million hectares of land become unusable every year, and this amount will continue to increase. It was reported that data, approximately 6% of the world's land is threatened by salinity (Yılmaz et al, 2022). In Türkiye, 1.5 million hectares of land face salinity problems, and 60% of these areas are salty, 19.6% moderately saline, 0.4% moderately alkaline, and 12% mildly saline (Gursoy, 2022).…”