Selenium nanoparticles as in vitro rooting agent, regulates stomata closure and antioxidant activity of gerbera to tolerate acclimatization stress

Khai, Hoang Dac; Mai, Nguyen Thi Nhu; Tùng, Hoàng Thanh; Luận, Vũ Quốc; Cường, Đỗ Mạnh; Ngan, Ha Thi My; Châu, Nguyễn Ngọc; Buu, Ngo Quoc; Vịnh, Nguyễn Quang; Doan, Manh Dung; Nhựt, Dương Tấn

doi:10.1007/s11240-022-02250-3

Cited by 25 publications

(7 citation statements)

References 62 publications

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“…This indicates their better functionality, that is, the ability to regulate transpiration and gas exchange. This is in harmony with the data of Khai et al [ 45 ], who observed an increase in the adaptation potential of gerbera, with similar findings for stomata owing to the effect of selenium nanoparticles. The obtained data show that the bacterization of plants lead to a better adaptation of stomata and leaves of plants to stressful conditions of reduced air humidity in ex vitro conditions.…”

Section: Discussionsupporting

confidence: 92%

Rhizobacteria Increase the Adaptation Potential of Potato Microclones under Aeroponic Conditions

et al. 2023

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Adaptation ex vitro is strongly stressful for microplants. Plant-growth-promoting rhizobacteria (PGPR) help to increase the adaptation potential of microplants transplanted from test tubes into the natural environment. We investigated the mechanisms of antioxidant protection of PGPR-inoculated potato microclones adapting to ex vitro growth in an aeroponic system. Potato (Solanum tuberosum L. cv. Nevsky) microplants were inoculated in vitro with the bacteria Azospirillum baldaniorum Sp245 and Ochrobactrum cytisi IPA7.2. On days 1 and 7 of plant growth ex vitro, catalase and peroxidase activities in the leaves of inoculated plants were 1.5-fold higher than they were in non-inoculated plants. The activity of ascorbate peroxidase was reduced in both in vitro and ex vitro treatments, and this reduction was accompanied by a decrease in the leaf content of hydrogen peroxide and malondialdehyde. As a result, inoculation contributed to the regulation of the plant pro/antioxidant system, lowering the oxidative stress and leading to better plant survival ex vitro. This was evidenced by the higher values of measured morphological and physiological variables of the inoculated plants, as compared with the values in the control treatment. Thus, we have shown some PGPR-mediated mechanisms of potato plant protection from adverse environmental factors under aeroponic conditions.

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Section: Discussionsupporting

confidence: 92%

Rhizobacteria Increase the Adaptation Potential of Potato Microclones under Aeroponic Conditions

et al. 2023

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“…Small SeNPs exhibited a large specific surface area, which allowed many reactive sites for free radicals. As a result, ultrasonic cavitation contributed to the ability to scavenge free radicals in the study by Khai et al [ 75 ]. In addition, Khai et al [ 76 ], reported that SeNPs had a positive effect on free radical scavenging activity.…”

Section: Resultsmentioning

confidence: 99%

Effect of Phytosynthesized Selenium and Cerium Oxide Nanoparticles on Wheat (Triticum aestivum L.) against Stripe Rust Disease

et al. 2022

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In this study, selenium nanoparticles (SeNPs) and cerium oxide nanoparticles (CeONPs) were synthesized by using the extract of Melia azedarach leaves, and Acorus calamusas rhizomes, respectively, and investigated for the biological and sustainable control of yellow, or stripe rust, disease in wheat. The green synthesized NPs were characterized by UV-Visible spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD).The SeNPs and CeONPs, with different concentrations (i.e., 10, 20, 30, and 40 mg/L), were exogenously applied to wheat infected with Puccinia striformis. SeNPs and CeONPs, at a concentration of 30 mg/L, were found to be the most suitable concentrations, which reduced the disease severity and enhanced the morphological (plant height, root length, shoot length, leaf length, and ear length), physiological (chlorophyll and membrane stability index), biochemical (proline, phenolics and flavonoids) and antioxidant (SOD and POD) parameters. The antioxidant activity of SeNPs and CeONPs was also measured. For this purpose, different concentrations (50, 100, 150, 200 and 400 ppm) of both SeNPs and CeONPs were used. The concentration of 400 ppm most promoted the DPPH, ABTS and reducing power activity of both SeNPs and CeONPs. This study is considered the first biocompatible approach to evaluate the potential of green synthesized SeNPs and CeONPs to improve the health of yellow, or stripe rust, infected wheat plants and to provide an effective management strategy to inhibit the growth of Puccinia striformis.

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“…Fonte: Autores. Outro trabalho mostrou que nanopartículas de selênio (nSe) nas concentrações de 0,1 a 1,5 mg L -1 promoveram o crescimento in vitro de plântulas de gerbera, tal como altura da planta, comprimento da folha, teor total de clorofila, biomassa de plântulas (Khai et al, 2022). No entanto, nSe mostraram atividade inibitória em 3 mg L -1 com uma diminuição no crescimento da parte aérea, raiz, bem como fechamento estomático em comparação com os outros tratamentos.…”

Section: Resultsunclassified

Aplicação de fontes de selenito e selenato na micropropagação de Digitalis mariana Boiss. ssp. Heywoodii

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et al. 2023

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As espécies de Digitalis lanata e Digitalis mariana são exploradas industrialmente para a produção de digoxina e digitoxina, cardenolídeos empregados clinicamente na insuficiência cardíaca congestiva. Fatores ambientais, principalmente os fatores bióticos, interferem na produção vegetal. Problemas na produção convencional de Digitalis mariana por sementes têm afetado a produção de cardenolídeos pela planta. A cultura de tecidos vegetais é baseada na totipotencialidade das células e aplica diversas formas de cultura in vitro. Essa técnica tem sido usada para criar variabilidade genética e também micropropagação em larga escala de plantas para o mercado comercial. Em plantas, o selênio (Se) em baixas concentrações é benéfico para o metabolismo, e estimula o crescimento. Além disso há relatos que o Se pode ajudar as plantas a se manterem por mais tempo fisiologicamente ativas, aumentando a produção vegetal. Desta forma, objetivou-se avaliar a influência da aplicação de fontes de selênio no crescimento, teor de cardenolídeos totais e de pigmentos fotossintéticos de Digitalis mariana subsp. heywoodii cultivada in vitro. Foram testadas duas fontes de selênio: selenato de sódio e selenito de sódio nas concentrações de 0, 1, 10, 20, 50, 100 mg L-1. Após 40 dias foram avaliados o crescimento, produção dos pigmentos fotossintéticos e a cardenolídeos . A fonte mais indicada para a espécie é o selenato, bem como a melhor concentração é a de 1mg L-1, que promoveu crescimento na maior parte das variáveis avaliadas, além de aumentar a produção de clorofila a, clorofila b, carotenoides e cardenolídeos. O uso de selênio no meio de cultivo de D. mariana subsp. heywoodii pode ser uma alternativa para otimizar o cultivo da espécie in vitro.

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Selenium nanoparticles as in vitro rooting agent, regulates stomata closure and antioxidant activity of gerbera to tolerate acclimatization stress

Cited by 25 publications

References 62 publications

Rhizobacteria Increase the Adaptation Potential of Potato Microclones under Aeroponic Conditions

Rhizobacteria Increase the Adaptation Potential of Potato Microclones under Aeroponic Conditions

Effect of Phytosynthesized Selenium and Cerium Oxide Nanoparticles on Wheat (Triticum aestivum L.) against Stripe Rust Disease

Aplicação de fontes de selenito e selenato na micropropagação de Digitalis mariana Boiss. ssp. Heywoodii

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