Effect of Ag Nanoparticles on Morphological and Physio-biochemical Traits of Stevia (Stevia Rebaudiana) Medicinal Plant
Nowadays, overproduction of secondary metabolites in remedial herbs through giving biotic/abiotic stresses is an interesting area of research. In the current study, the influences of various concentrations of silver nanoparticles (Ag NPs) were evaluated on several morphological and physio-biochemic...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2022-09-01
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| Series: | Caryologia |
| Online Access: | https://riviste.fupress.net/index.php/caryologia/article/view/1447 |
| Summary: | Nowadays, overproduction of secondary metabolites in remedial herbs through giving biotic/abiotic stresses is an interesting area of research. In the current study, the influences of various concentrations of silver nanoparticles (Ag NPs) were evaluated on several morphological and physio-biochemical traits, such as the steviol glycosides level in Stevia. The findings showed that the herbs incubated with 400-ppm Ag NPs own the highest dry and fresh weight of shoot, while those incubated with 80- up to 200- ppm Ag NPs own the highest steviol glycosides content. As a result, we successfully improve the content of stevioside glycoside up to 1.75-fold by applying the 80- up to 200-ppm Ag NPs in Stevia medicinal plant. Moreover, our findings revealed that the Ag NPs low concentrations lead to increase the glutathione content and total antioxidant capacity, and decrease MDA, whereas Ag NPs treatment with high concentrations represent an adverse effect. As a result, the treatment with Ag NPs low concentrations had a favorable efficacy on physio-biochemical and morphological characteristics of Stevia. These achievements are very promising, because they revealed a considerable capability for the Ag NPs application in enhancing the secondary metabolites in Stevia remedial herb. The recent study is the first case assessing the desirable influences of Ag NPs on the Stevia, in regard with shifting of biosynthetic pathway of steviol glycosides in a concentration-dependent manner.
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| ISSN: | 0008-7114 2165-5391 |