生物炭和纳米硅协同减轻砷毒性并提高辣椒(Capsicum annuum L.)的产量。

IF 8.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Natasha Manzoor , Liaqat Ali , Temoor Ahmad , Muhammad Yahya Khan , Hayssam M. Ali , Ying Liu , Gang Wang
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引用次数: 0

摘要

农业土壤中的砷(As)污染威胁着作物产量和食品安全。在这项研究中,我们考察了生物炭(BC)和硅纳米粒子(SiNPs)作为环境可持续的土壤改良剂对减轻辣椒(Capsicum annuum L.)植物砷毒性的功效。我们的研究结果表明,砷胁迫严重抑制了辣椒(Capsicum annuum L.)的生长参数,进而降低了产量。然而,在受污染的土壤中施用 BC 和 SiNPs 能显著逆转这些负面影响,促进植株长度和生物量的增加,尤其是以协同增效的方式同时施用时。与健康植物相比,砷胁迫导致氧化损伤增加,叶片丙二醛含量增加了 29%。然而,BC + SiNPs 的协同应用有效地调节了抗氧化酶的活性,使超氧化物歧化酶和过氧化氢酶的水平分别显著提高了 55% 和 66%,从而增强了辣椒对氧化胁迫的抵抗力。同样,与对照处理相比,BC + SiNPs 修正案使光合作用提高了 52%,气孔导度提高了 39%,可溶性糖提高了 42%,蛋白质提高了 30%。此外,与对照相比,联合施用 BC+SiNPs 可使根部砷含量显著降低 61%,秸秆砷含量显著降低 37%。透射电子显微镜证实,BC 和 SiNPs 的协同使用保护了辣椒叶片的超微结构,抵御了砷引起的损害。总之,用 BC 和 SiNPs 补充受污染的土壤被证明是一种可持续的策略,可减轻辣椒中的砷毒性,促进植物生长、生理机能和产量,从而提高食品安全。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Biochar and nanoscale silicon synergistically alleviate arsenic toxicity and enhance productivity in chili peppers (Capsicum annuum L.)

Biochar and nanoscale silicon synergistically alleviate arsenic toxicity and enhance productivity in chili peppers (Capsicum annuum L.)
Arsenic (As) contamination in agricultural soils threatens crop productivity and food safety. In this study, we examined the efficacy of biochar (BC) and silicon nanoparticles (SiNPs) as environmentally sustainable soil amendments to alleviate As toxicity in chili (Capsicum annuum L.) plants. Our findings revealed that As stress severely inhibited the growth parameters of Capsicum annuum L., and subsequently reduced yield. However, the application of BC and SiNPs into the contaminated soil significantly reversed these negative effects, promoting plant length and biomass, particularly when applied together in a synergistic manner. Arsenic stress led to increased oxidative damage, as evidenced by a 29% increase in leaf malondialdehyde content as compared to the healthy plants. Nevertheless, the synergistic (BC + SiNPs) application effectively modulated antioxidant enzyme activity, resulting in a remarkable 55% and 66% enhancement in the superoxide dismutase and catalase levels, respectively, boosting chili's resistance against oxidative stress. Similarly, BC + SiNPs amendments improved photosynthesis by 52%, stomatal conductance by 39%, soluble sugars by 42%, and proteins by 30% as compared with those of control treatment. Additionally, the combined BC + SiNPs application significantly reduced root As content by 61% and straw As by 37% as compared with the control one. Transmission electron microscopy confirmed that the synergistic use of BC and SiNPs preserved chili leaf ultrastructure, shielding against As-induced damage. Overall, the supplementation of contaminated soil with BC and SiNPs was proved to be a sustainable strategy for mitigating As toxicity in chili peppers, enhancing plant growth, physiology, and yield, and thereby food safety.
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来源期刊
Chemosphere
Chemosphere 环境科学-环境科学
CiteScore
15.80
自引率
8.00%
发文量
4975
审稿时长
3.4 months
期刊介绍: Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.
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