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： Zhao, Xinlin 2 ; Wang, Yuanchang 2 ; Wang, Chenyuan 2 ; Zhou, Wei 2 ; Ouyang, Da 5 ; Gao, Shuaishuai 6 ; Tan, Xiaofei 7 ; Huang, Rong 2 ; Guo, Yuan 1 ;
作者机构： 1.Changsha Univ, Sch Mat & Environm Engn, Changsha 41000, Hunan, Peoples R China
2.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha 410205, Hunan, Peoples R China
3.Chinese Acad Agr Sci, Ctr Southern Econ Crops, Changsha 410205, Hunan, Peoples R China
4.Hunan Prov Key Lab TCM Agr Biogenom, Changsha 410205, Hunan, Peoples R China
5.Zhejiang Agr & Forestry Univ, Sch Environm & Resource Sci, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Hangzhou 311300, Peoples R China
6.Hunan Acad Agr Sci, Hunan Inst Microbiol, Hunan Prov Engn & Technol Res Ctr Agr Microbiol Ap, Changsha 410009, Peoples R China
7.Hunan Univ, Minist Educ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China
8.Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Peoples R China
9.Hunan Univ, Shenzhen Res Inst, Shenzhen 518055, Peoples R China
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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