Chitooligosaccharide application enhanced the growth and phytoremediation efficiency of industrial hemp in Cd-contaminated soils
文献类型: 外文期刊
作者: Xinlin Zhao;Yuanchang Wang;Chenyuan Wang;Wei Zhou;Da Ouyang;Shuaishuai Gao;Xiaofei Tan;Rong Huang;Yuan Guo
作者机构:
关键词: Antioxidant;Bioconcentration;Biomass;Cannabis sativa;Heavy metal;Phytomanagement
期刊名称: Bioresource Technology
ISSN: 0960-8524
年卷期: 2025 年 418 卷
页码:
收录情况: SCIE(2025版) ; ; EI(2025版)
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 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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