Fruit extracts from Phyllanthus emblica accentuate cadmium tolerance and accumulation in Platycladus orientalis: A new natural chelate for phytoextraction*
文献类型： 外文期刊
作者： Guo, Bin 1 ; Liu, Chen 1 ; Lin, Yicheng 1 ; Li, Hua 1 ; Li, Ningyu 1 ; Liu, Junli 1 ; Fu, Qinglin 1 ; Tong, Wenbin 2 ; Yu, H 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, Hangzhou 310021, Peoples R China
2.Qujiang Dist Agr & Rural Burea, Quzhou 324022, Peoples R China
3.Shangyu Dist Agr Technol Extens Ctr, Shaoxing 312000, Peoples R China
关键词： Chinese traditional herbs; Chelating agent; Cadmium; Phytoextraction
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）
ISSN： 0269-7491
年卷期： 2021 年 280 卷
页码：
收录情况： SCI
摘要： A key challenge for phytoextraction is the identification of high efficiency, growth-supporting, and low cost chelating agents. To date, no substance has satisfied all above criteria. This study investigated nine traditional Chinese herbs and found that Phyllanthus emblica fruit (FPE) extract could be utilised as an optimal chelate for the phytoextraction of cadmium (Cd)-contaminated soils. FPE application into soil at a ratio of 0.1% (w/w) significantly increased extractable Cd (by 43%) compared to the control. The success of FPE as a chelating agent was attributed to high quantities of polyphenol compounds (0.76%) and organic acids (9.6%), in particular, gallic acid (7.6%). Furthermore, antioxidative properties (1.4%) and free amino acids in FPE alleviated Cd-induced oxidant toxicity and enhanced plant biomass. FPE promoted 78% higher phytoextraction efficiency in Platycladus orientalis compared to traditional chelating agents (EDTA). Furthermore, 76% of FPE was degraded 90 days after the initial application, and there was no difference in extractable Cd between the treatment and control. FPE has been commercially produced at a lower market price than other biodegradable chelates. As a commercially available and cost-effective chelator, FPE could be utilised to treat Cd-contaminated soils without adverse environmental impacts. (c) 2021 Elsevier Ltd. All rights reserved.
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