Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles
Abstract The application of nanotechnology in agriculture can remarkably improve the cultivation and growth of crop plants. Many studies showed that nanoparticles (NPs) made plants grow more vigorously. Light can make NPs aggregated, leading to the reduction of the NPs toxicity. In addition, treatme...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2022-07-01
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| Series: | BMC Plant Biology |
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| Online Access: | https://doi.org/10.1186/s12870-022-03692-9 |
| _version_ | 1811323528399552512 |
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| author | Kexiao Song Donghao Zhao Haoyang Sun Jinzhu Gao Shuo Li Tianming Hu Xueqing He |
| author_facet | Kexiao Song Donghao Zhao Haoyang Sun Jinzhu Gao Shuo Li Tianming Hu Xueqing He |
| author_sort | Kexiao Song |
| collection | DOAJ |
| description | Abstract The application of nanotechnology in agriculture can remarkably improve the cultivation and growth of crop plants. Many studies showed that nanoparticles (NPs) made plants grow more vigorously. Light can make NPs aggregated, leading to the reduction of the NPs toxicity. In addition, treatment with NPs had a “hormesis effect” on plants. In this study, light-induced silver nanoparticles (AgNPs) were synthesized by using the alfalfa (Medicago sativa L.) extracts, and then the optimal synthetic condition was determined. Light-induced AgNPs were aggregated, spherical and pink, and they were coated with esters, phenols, acids, terpenes, amino acids and sugars, which were the compositions of alfalfa extracts. The concentration of free Ag+ was less than 2 % of the AgNPs concentration. Through nanopriming, Ag+ got into the seedlings and caused the impact of AgNPs on alfalfa. Compared with the control group, low concentration of light-induced AgNPs had a positive effect on the photosynthesis. It was also harmless to the leaf cells, and there was no elongation effect on shoots. Although high concentration of AgNPs was especially beneficial to root elongation, it had a slight toxic effect on seedlings due to the accumulation of silver. With the increase of AgNPs concentration, the content of silver in the seedlings increased and the silver enriched in plants was at the mg/kg level. Just as available research reported the toxicity of NPs can be reduced by using suitable synthesis and application methods, the present light induction, active material encapsulation and nanopriming minimized the toxicity of AgNPs to plants, enhancing the antioxidant enzyme system. Graphical Abstract |
| first_indexed | 2024-04-13T13:56:46Z |
| format | Article |
| id | doaj.art-7e54c0d9153640e3b38e234353b79db7 |
| institution | Directory Open Access Journal |
| issn | 1471-2229 |
| language | English |
| last_indexed | 2024-04-13T13:56:46Z |
| publishDate | 2022-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Plant Biology |
| spelling | doaj.art-7e54c0d9153640e3b38e234353b79db72022-12-22T02:44:10ZengBMCBMC Plant Biology1471-22292022-07-0122111610.1186/s12870-022-03692-9Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticlesKexiao Song0Donghao Zhao1Haoyang Sun2Jinzhu Gao3Shuo Li4Tianming Hu5Xueqing He6College of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityCollege of Grassland Agriculture, Northwest A&F UniversityAbstract The application of nanotechnology in agriculture can remarkably improve the cultivation and growth of crop plants. Many studies showed that nanoparticles (NPs) made plants grow more vigorously. Light can make NPs aggregated, leading to the reduction of the NPs toxicity. In addition, treatment with NPs had a “hormesis effect” on plants. In this study, light-induced silver nanoparticles (AgNPs) were synthesized by using the alfalfa (Medicago sativa L.) extracts, and then the optimal synthetic condition was determined. Light-induced AgNPs were aggregated, spherical and pink, and they were coated with esters, phenols, acids, terpenes, amino acids and sugars, which were the compositions of alfalfa extracts. The concentration of free Ag+ was less than 2 % of the AgNPs concentration. Through nanopriming, Ag+ got into the seedlings and caused the impact of AgNPs on alfalfa. Compared with the control group, low concentration of light-induced AgNPs had a positive effect on the photosynthesis. It was also harmless to the leaf cells, and there was no elongation effect on shoots. Although high concentration of AgNPs was especially beneficial to root elongation, it had a slight toxic effect on seedlings due to the accumulation of silver. With the increase of AgNPs concentration, the content of silver in the seedlings increased and the silver enriched in plants was at the mg/kg level. Just as available research reported the toxicity of NPs can be reduced by using suitable synthesis and application methods, the present light induction, active material encapsulation and nanopriming minimized the toxicity of AgNPs to plants, enhancing the antioxidant enzyme system. Graphical Abstracthttps://doi.org/10.1186/s12870-022-03692-9Green nanoprimingLight-induced AgNPsAlfalfa growthAntioxidant enzyme system |
| spellingShingle | Kexiao Song Donghao Zhao Haoyang Sun Jinzhu Gao Shuo Li Tianming Hu Xueqing He Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles BMC Plant Biology Green nanopriming Light-induced AgNPs Alfalfa growth Antioxidant enzyme system |
| title | Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles |
| title_full | Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles |
| title_fullStr | Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles |
| title_full_unstemmed | Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles |
| title_short | Green nanopriming: responses of alfalfa (Medicago sativa L.) seedlings to alfalfa extracts capped and light-induced silver nanoparticles |
| title_sort | green nanopriming responses of alfalfa medicago sativa l seedlings to alfalfa extracts capped and light induced silver nanoparticles |
| topic | Green nanopriming Light-induced AgNPs Alfalfa growth Antioxidant enzyme system |
| url | https://doi.org/10.1186/s12870-022-03692-9 |
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