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

文献类型： 外文期刊

第一作者： Guo, Yuan

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

作者机构：

关键词： Antioxidant; Bioconcentration; Biomass; Cannabis sativa; Heavy metal; Phytomanagement

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.0； 五年影响因子：9.5 ）

ISSN： 0960-8524

年卷期： 2025 年 418 卷

页码：

收录情况： SCI

摘要： 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 mu g 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 mu g m- 2 under 60 mg cadmium kg- 1 soil), NACOS, and HTCOS significantly elevated the Cd concentration in hemp. Consequently, NACOS and HTCOS (45 mu g m- 2) significantly increased the average Cd removal up to 61 % and 81 %, respectively, compared with the control. Therefore, spraying chitooligo- saccharides can enhance growth and phytoremediation efficiency of hemp by elevating aerial biomass and cadmium concentration of hemp.

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