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Positive effect of silver nanoparticles in micropropagation of Limonium sinuatum (L.) Mill. ‘White’
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Positive effect of silver nanoparticles in micropropagation of Limonium sinuatum (L.) Mill. ‘White’
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Positive effect of silver nanoparticles in micropropagation of Limonium sinuatum (L.) Mill. ‘White’
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Journal Article
Positive effect of silver nanoparticles in micropropagation of Limonium sinuatum (L.) Mill. ‘White’
2023
Overview
The use of silver nanoparticles (AgNPs) is a new direction that promises high economic efficiency in micropropagation of Limonium sinuatum (L.) Mill. ‘White’. In this study, the effect of AgNPs on the explant surface disinfection; in vitro growth, development and acclimatization of L. sinuatum were investigated. Especially, endogenous hormone alterations in shoot multiplication and rooting stages of plantlets derived from with or without AgNPs (control) treatments were recorded. The results showed that explants treated with 200 mg/L AgNPs for 20 min not only had a higher disinfection effect but also had better effects on shoot induction than the explants treated with 1000 mg/L HgCl2 for 5 min. The explant cultured on medium supplemented with 1.0 mg/L AgNPs showed higher shoot number (5.66 shoots/explant) than the control (2.66 shoots/explant) via reducing ethylene content (0.690 µg/g) and increasing zeatin content (0.947 µg/g). The rooting time of plantlets was shortened by 3 days in the medium supplemented with 0.4 mg/L AgNPs as compared to the control, which corresponds to low ethylene content and high content of IAA, GA3, and ABA. The results indicated that AgNPs stimulated shoot multiplication and rooting of L. sinuatum through altering endogenous hormones. Furthermore, 0.4 mg/L AgNPs-derived plantlets showed well acclimatization as compared to those of the control in greenhouse conditions.Key messageThe supplementation of AgNPs in the culture medium might alter endogenous hormone levels resulting in higher shoot multiplication, rooting, survival and growth rate of Limonium sinuatum.
