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利用小球藻-K01 提取物的绿色合成与 FeO 纳米粒子的表征，以潜在增强植物生长刺激和抗真菌活性。

Green synthesis and characterization of FeO nanoparticles using Chlorella-K01 extract for potential enhancement of plant growth stimulating and antifungal activity.

机构信息

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, 58 Renmin Avenue, Haikou, 570228, Hainan Province, China.

Biotechnology Research Department, Ministry of Science and Technology, Kyaukse, 05151, Myanmar.

出版信息

Sci Rep. 2021 Nov 9;11(1):21996. doi: 10.1038/s41598-021-01538-2.

DOI:10.1038/s41598-021-01538-2
PMID:34754045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8578496/
Abstract

The purpose of this research was to determine the efficacy of iron oxide nanoparticles (FeO-NPs) using microalgal products as a plant growth stimulant and antifungal agent. The work was conducted with the phyco-synthesis and characterization of FeO-NPs using 0.1 M ferric/ferrous chloride solution (2:1 ratio; 65 °C) with aqueous extract of the green microalga Chlorella K01. Protein, carbohydrate and polyphenol contents of Chlorella K01 extract were measured. The synthesized microalgal FeO-NPs made a significant contribution to the germination and vigor index of rice, maize, mustard, green grams, and watermelons. FeO-NPs also exhibited antifungal activity against Fusarium oxysporum, Fusarium tricinctum, Fusarium maniliforme, Rhizoctonia solani, and Phythium sp. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size analysers (PSA), and zeta potential (ZP) measurements were used to characterize these green fabricated magnetite NPs. FTIR analysis showed that the synergy of microalgal proteins, carbohydrtates and polyphenols is responsible for the biofabrication of iron nanoparticles. A spheroid dispersion of biosynthesized FeO-NPs with an average diameter of 76.5 nm was produced in the synthetic process.

摘要

本研究旨在确定氧化铁纳米粒子（FeO-NPs）的功效，将微藻产品用作植物生长刺激剂和抗真菌剂。这项工作是通过使用 0.1 M 三价铁/二价铁氯化物溶液（2:1 比例；65°C）与绿微藻 K01 的水提物进行 phyco 合成和 FeO-NPs 的表征来完成的。测量了 K01 藻提取物中的蛋白质、碳水化合物和多酚含量。合成的微藻 FeO-NPs 显著促进了水稻、玉米、芥菜、绿豆和西瓜的发芽和活力指数。FeO-NPs 还表现出对尖孢镰刀菌、三隔镰刀菌、马尼拉镰刀菌、立枯丝核菌和腐霉的抗真菌活性。傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）、X 射线光电子能谱（XPS）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、粒度分析仪（PSA）和zeta 电位（ZP）测量用于表征这些绿色制造的磁铁矿 NPs。FTIR 分析表明，微藻蛋白、碳水化合物和多酚的协同作用是生物制造铁纳米粒子的原因。在合成过程中，产生了具有 76.5nm 平均直径的球形分散的生物合成 FeO-NPs。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/3bf63a253229/41598_2021_1538_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/bf6064be1ff0/41598_2021_1538_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/40192971960c/41598_2021_1538_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/19582697b041/41598_2021_1538_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/68931712b7e6/41598_2021_1538_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0355/8578496/9e4e3c6f6406/41598_2021_1538_Fig9_HTML.jpg
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