Influence of SiO2, Al2O3 and TiO2 nanoparticles on okra seed germination under PEG-6000 simulated water deficit stress

IF 1.1 4区农林科学 Q3 AGRONOMY Journal of Seed Science Pub Date : 2023-01-01 DOI:10.1590/2317-1545v45274866

Jiyue Wang, Jiajun Xu, Mingli Yang, Mingzhi Miao

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Abstract

Abstract: A comparative study for evaluating the influence of metal oxide nanoparticles (MONPs) (Al2O3, TiO2, and SiO2) on seed germination and seedling growth in okra was implemented under water deficit stress stimulated by PEG-6000. The results revealed that additive of SiO2 nanoparticles (SNPs) and Al2O3 (ANPs) have significant positive effect on seeds germination, while a reduction of that were observed by using TiO2 nanoparticles (TNPs) at 50 mg.L-1 concentration under 5% PEG-6000 stimulated drought stress as compared to that without MONPs. Further, relative to non-MONPs treatment, all the tested MONPs dramatically enhanced the drought stress tolerance in okra seedlings due to the improvement of morphological growth despite a few traits were inhibited under certain water deficiency to some degree. Improvement of drought resistance induced by TNPs and ANPs were found to be higher than that by SNPs. Our finding provides a promising approach to cope with water scarcity, as application of metal oxide nanoparticles to be a potential option to protect okra plants against drought stress.

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PEG-6000模拟水分亏缺胁迫下SiO2、Al2O3和TiO2纳米颗粒对秋葵种子萌发的影响

摘要/ Abstract摘要:在PEG-6000诱导水分亏缺胁迫下，研究了金属氧化物纳米粒子(Al2O3、TiO2和SiO2)对秋葵种子萌发和幼苗生长的影响。结果表明，添加SiO2纳米粒子(SNPs)和Al2O3纳米粒子(ANPs)对种子萌发有显著的正向影响，而添加50 mg TiO2纳米粒子(TNPs)对种子萌发有显著的抑制作用。与未添加MONPs相比，5% PEG-6000下L-1浓度刺激干旱胁迫。此外，与非MONPs处理相比，所有MONPs处理均显著提高了秋葵幼苗的抗旱性，尽管在一定的缺水条件下，少数性状受到一定程度的抑制，但由于形态生长的改善，这些处理均显著提高了秋葵幼苗的抗旱性。结果表明，TNPs和ANPs诱导的抗旱性提高高于snp。我们的发现为应对水资源短缺提供了一种有希望的方法，因为金属氧化物纳米颗粒的应用可能是保护秋葵植物免受干旱胁迫的潜在选择。

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来源期刊

Journal of Seed Science Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.00

自引率

30.00%

发文量

审稿时长

12 weeks

期刊介绍： From 2017 the Journal of Seed Science (JSS) will circulate online version only. Original scientific studies and communications, not yet published or submitted to another journal for publication and written in Portuguese or English, will be accepted for publication. For manuscripts submitted in English, the authors should provide an adequated version. The SCIENTIFIC COMMUNICATION is a category of scientific manuscript which describes a technique, an equipment, new species or observations and surveys of limited results. It has the same scientific rigor as the “Scientific Articles” and the same value as a publication. The classification of a manuscript as a SCIENTIFIC COMMUNICATION is based on its content and scientific merit but it can be a preliminary study, simple and not definitive on a certain subject, with publication justified by its uniqueness and contribution to the area. The Editorial Board of the JSS may invite leading authors of recognized reputation to compose specific Review Articles covering topics of their specialization that will convey to the scientific community the state-of-the-art knowledge related to the specific theme.