Chitooligosaccharide application enhanced the growth and phytoremediation efficiency of industrial hemp in Cd-contaminated soils

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2024-12-17 DOI:10.1016/j.biortech.2024.131998

Xinlin Zhao, Yuanchang Wang, Chenyuan Wang, Wei Zhou, Da Ouyang, Shuaishuai Gao, Xiaofei Tan, Rong Huang, Yuan Guo

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引用次数: 0

Abstract

Hemp has been widely used for cadmium (Cd) remediation. However, its remediation efficiency needs to be improved. Chitooligosaccharides can enhance plant resistance and growth; however, their effects on hemp for Cd-remediation remain unclear. Herein, a greenhouse pot experiment was conducted to investigate the effects of three doses (0, 22.5, and 45 μg m−2) of chitooligosaccharides (COS), chitin-oligosaccharides (NACOS), and hetero-chitooligosaccharides (HTCOS) on the growth and Cd-remediation efficiency of hemp. Results showed that chitooligosaccharides promoted the antioxidant system and aerial biomass (maximum 84 %) depending on doses and types. COS (22.5 μg m−2 under 60 mg cadmium kg−1 soil), NACOS, and HTCOS significantly elevated the Cd concentration in hemp. Consequently, NACOS and HTCOS (45 μg m−2) significantly increased the average Cd removal up to 61 % and 81 %, respectively, compared with the control. Therefore, spraying chitooligosaccharides can enhance growth and phytoremediation efficiency of hemp by elevating aerial biomass and cadmium concentration of hemp.

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壳寡糖的应用提高了工业大麻在镉污染土壤中的生长和植物修复效率

大麻已被广泛用于镉（Cd）修复。然而，其修复效率还有待提高。壳寡糖可以增强植物的抗性和生长，但其对大麻进行镉修复的效果尚不明确。本文通过温室盆栽实验研究了三种剂量（0、22.5 和 45 μg m-2）的壳寡糖（COS）、壳寡糖（NACOS）和杂壳寡糖（HTCOS）对大麻生长和镉修复效率的影响。结果表明，壳寡糖能促进抗氧化系统和气生生物量（最高 84%），这取决于剂量和类型。COS（22.5 μg m-2，60 mg 镉 kg-1 土壤）、NACOS 和 HTCOS 能显著提高大麻中的镉浓度。因此，与对照组相比，NACOS 和 HTCOS（45 μg m-2）能显著提高镉的平均去除率，分别达到 61% 和 81%。因此，喷施壳寡糖可提高大麻的气生生物量和镉浓度，从而促进大麻的生长和植物修复效率。

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

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.