Modulation of physiological and biochemical traits of two genotypes of Rosa damascena Mill. by SiO2-NPs under In vitro drought stress

• DOI: 10.1186/s12870-022-03915-z
• Publication Date: 2022-11-18T02:02:58Z
• Authors: Hanifeh Seyed Haj...; Sahar Azizi; Farzad Rasouli; Volkan Okatan
• Keywords: Osmolyte

Abstract Background Drought is a major abiotic stress that restricts plant growth and efficiency although some nutrients such as silicon improve drought tolerance by regulating the biosynthesis accumulating osmolytes. In this regard, completely randomized factorial design was performed with three factors including two genotypes (‘Maragheh’ ‘Kashan’), concentrations of dioxide nanoparticles (SiO 2 -NPs) (0, 50, 100 mg L − 1 ), five PEG 25, 75, g ) replications. Results The findings showed decreased protein content it improved SiO -NPs, so genotype ‘Maragheh’ treated -NPs had highest content. Under severe stress, higher membrane stability index (MSI) than ‘Kashan’, explants subjected to exhibited uppermost MSI. supplemented sustained their photosynthetic parameters more in comparison other treatments under conditions well proline ‘Kashan’. reduced Fm , Fv/Fm Fv while treatment enhanced these parameters. also water deficit enhancing activity antioxidant enzymes catalase (CAT), peroxidase (POD), guaiacol (GPX), superoxide dismutase (SOD) reducing lipid peroxidation H O concentration. Conclusions According findings, ‘Kashan’ improving balance, enzyme activities, obtained from unpublished previous evaluation vivo we concluded based on results, vitro culture can be used for screening Damask rose plants. results current study revealed induced polyethylene glycol (PEG) ameliorated were better sensitive ones response treatment.