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Coupling phytoremediation of cadmium-contaminated soil with safe crop production based on a sorghum farming system
Liu, Zhi-Quan; Li, Hong-Li; Zeng, Xian-Jie; Lu, Cheng; Fu, Jing-Ying; Guo, Li-Jun; Kimani, Wilson Mwangi; Yan, Hui-Li; He, Zhen-Yan; Hao, Huai-Qing; Jing, Hai-Chun
AbstractWith increasing environmental pressure and soil pollution, sustainable energy and food production for a steadily growing world population is a grand challenge. Globally, nearly 12 million hectares of croplands are contaminated by cadmium (Cd), and how to develop a production system for the cleaning and utilisation of such contaminated land is essential for sustainability. Herein, a diverse panel of 166 sorghum accessions was grown in typical Cd-contaminated fields in two consecutive years, and the effect of different accessions and organs on the phytoremediation potential was evaluated by analysing the Cd concentrations of stems, leaves and grains at maturity. Both the bioaccumulation factors (BCFs) and the aboveground Cd accumulation varied substantially and the differences were up to 13-24 fold. The aboveground Cd accumulation was positively associated with important bioenergy traits including biomass, stem Brix, internode numbers and plant height, as envisaged by the high Cd concentration in sweet sorghum accessions, while BCF was significantly negatively correlated with relevant agronomic traits except Brix. The genetic regulation of Cd concentration in grains is different from those in leaves and stems, which allowed us to screen for three types of sorghum resources with the potential to couple soil phytoremediation with the production of bioethanol, safe grains and forage. A sorghum farming system was further proposed, which could reduce soil Cd concentration below the safe level within 12 years and obtain economic returns of about 70.5-169.5 million Chinese Yuan (CNY) by producing bioethanol, safe grains and forage in one season in 30% of the Cd-contaminated soil in China. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordSorghum (Sorghum bicolor) Sustainable agriculture Cadmium (Cd) Soil phytoremediation Biofuel Safe crop production
Subject AreaGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Indexed BySCI
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS IDWOS:000579495100080
Publication PlaceOXFORD
Funding OrganizationNational Key R&D Program of China [2019YFD1002701] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31461143023] ; Science and Technology Service Network Initiative Project of Chinese Academy of Sciences [KFJ-STS-ZDTP-056, KFJ-FP-201809] ; Engineering Laboratory project of Chinese Academy of Sciences [KFJ-PTXM-007]
Corresponding Author Emailhqhao@ibcas.ac.cn
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.[Liu, Zhi-Quan
2.Li, Hong-Li
3.Lu, Cheng
4.Kimani, Wilson Mwangi
5.Yan, Hui-Li
6.He, Zhen-Yan
7.Hao, Huai-Qing
8.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China
9.Chinese Acad Sci, Inst Bot, Engn Lab Grass Based Livestock Husb, Beijing 100093, Peoples R China
10.[Li, Hong-Li
11.Fu, Jing-Ying
12.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
13.[Zeng, Xian-Jie
14.Hunan Acad Agr Sci, Soil & Fertilizer Inst, Changsha 410125, Peoples R China
15.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhi-Quan,Li, Hong-Li,Zeng, Xian-Jie,et al. Coupling phytoremediation of cadmium-contaminated soil with safe crop production based on a sorghum farming system[J]. JOURNAL OF CLEANER PRODUCTION,2020,275.
APA Liu, Zhi-Quan.,Li, Hong-Li.,Zeng, Xian-Jie.,Lu, Cheng.,Fu, Jing-Ying.,...&Jing, Hai-Chun.(2020).Coupling phytoremediation of cadmium-contaminated soil with safe crop production based on a sorghum farming system.JOURNAL OF CLEANER PRODUCTION,275.
MLA Liu, Zhi-Quan,et al."Coupling phytoremediation of cadmium-contaminated soil with safe crop production based on a sorghum farming system".JOURNAL OF CLEANER PRODUCTION 275(2020).
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