首页|Multi-walled carbon nanotubes enhanced the antioxidative system and alleviated salt stress in grape seedlings
Multi-walled carbon nanotubes enhanced the antioxidative system and alleviated salt stress in grape seedlings
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NSTL
Elsevier
To enhance the salt resistance of seeds and seedlings for grapes under salt stress, multi-walled carbon nanotubes (MWCNTs) at 30, 60, 90, 150, and 180 mu g/mL, respectively, were used to treat gape seedlings, and the seed germination and physiological characteristics grape seedlings were studied. MWCNTs at 90 mu g/mL exhibited the best results, increased root length and germination rate compared with other concentrations. Moreover, MWCNTs at 90 mu g/mL mostly decreased the content of MDA in leaves and increased the activities of superoxide (SOD), peroxidase (POD), and catalase (CAT). At the same time, it increased the activities of dehydroascorbate reductase (DHAR), ascorbate peroxidase (APX), glutathione-S-transferase (GT), and glutathione reductase (GR). MWCNTs treatment also maintained the scavenging activity of DPPHGreek ano teleia and increased the ratios of GSH:GSSG and AsA:DHA. These results suggested that MWCNTs with the appropriate concentration of 90 mu g/mL could significantly enhance the reducing ability through direct and indirect antioxidant systems (the AsA-GSH cycle) and maintain a high antioxidant capacity of grape seedlings under salt stress.
NSTL
Elsevier
