Silicon dioxide-nanoparticle nutrition mitigates salinity in gerbera by modulating ion accumulation and antioxidants

IF 2.2 4区农林科学 Q2 HORTICULTURE

Folia Horticulturae Pub Date : 2021-06-01 DOI:10.2478/fhort-2021-0007

H. S. Hajizadeh, M. Asadi, S. Zahedi, N. Hamzehpour, F. Rasouli, M. Helvaci, T. Alas

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引用次数: 10

Abstract

Abstract This work aimed to investigate the interaction between salt stress and the application of silicon dioxide-nanoparticles. In this study, gerbera plants grown in soilless culture were supplied with nutrient solutions with different NaCl concentrations (0, 5, 10, 20 and 30 mM) in combination with SiO2-NPs spray (0, 25 and 50 mg · L−1). Exposure of gerbera to salinity increased sodium concentration but decreased potassium and calcium concentrations in leaf as well as stem length/diameter, fresh/dry weight, leaf/flower number, flower diameter and leaf area. It also increased the activities of antioxidant enzymes and electrolyte leakage. Results indicated that SiO2-NPs could improve growth, biochemical and physiological traits. It increased stem thickness but slightly affected stem length. Flower diameter was not affected by salinity rates up to 10 mM of NaCl. However, a significant difference was observed between controls and plants treated with 30 mM of NaCl. Salinity increased the electrolyte leakage (32.5%), malondialdehyde (83.8%), hydrogen peroxide (113.5%), and the antioxidant enzyme activities such as ascorbate peroxidase (3.4-fold) and guaiacol peroxidase (6-fold) where SiO2-NPs activated them more, except for superoxide dismutase. Under salinity (30 mM), the increase in SiO2-NPs (especially at 25 mg · L−1) led to the increase in the uptake of Ca2+ (25.3%) as well as K+ (27.1%) and decreased absorption of Na+ (6.3%). SiO2-NPs has potential in improving salinity tolerance in gerbera. It seems that the sensitivity threshold of gerbera to the salinity was 10 mM and the use of SiO2-NPs is also effective in non-saline conditions.

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二氧化硅纳米颗粒营养通过调节离子积累和抗氧化剂来减轻非洲菊的盐度

摘要本工作旨在研究盐应力与二氧化硅纳米颗粒应用之间的相互作用。在本研究中，向在无土培养中生长的非洲菊植物提供不同NaCl浓度（0、5、10、20和30mM）的营养溶液，并结合SiO2 NPs喷雾（0、25和50mg·L−1）。沙鼠暴露于盐度会增加叶片中的钠浓度，但会降低叶片中的钾和钙浓度，以及茎长/直径、鲜重/干重、叶/花数、花径和叶面积。它还增加了抗氧化酶的活性和电解质渗漏。结果表明，SiO2纳米颗粒可以改善生长、生化和生理特性。它增加了茎的厚度，但对茎的长度略有影响。花的直径不受高达10mM NaCl的盐度的影响。然而，在对照和用30mM NaCl处理的植物之间观察到显著差异。盐度增加了电解质渗漏（32.5%）、丙二醛（83.8%）、过氧化氢（113.5%）和抗氧化酶活性，如抗坏血酸过氧化物酶（3.4倍）和愈创木酚过氧化物酶（6倍），其中SiO2 NPs对它们的激活更多，但超氧化物歧化酶除外。在盐度（30mM）下，SiO2 NPs的增加（尤其是在25mg·L−1时）导致对Ca2+和K+的吸收增加（25.3%），对Na+的吸收减少（6.3%）。非洲菊对盐度的敏感性阈值似乎为10mM，并且在非盐水条件下使用SiO2 NP也是有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Folia Horticulturae Agricultural and Biological Sciences-Horticulture

CiteScore

3.40

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Folia Horticulturae is an international, scientific journal published in English. It covers a broad research spectrum of aspects related to horticultural science that are of interest to a wide scientific community and have an impact on progress in both basic and applied research carried out with the use of horticultural crops and their products. The journal’s aim is to disseminate recent findings and serve as a forum for presenting views as well as for discussing important problems and prospects of modern horticulture, particularly in relation to sustainable production of high yield and quality of horticultural products, including their impact on human health.