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Effect of Wheat-Solanum nigrum L. intercropping on Cd accumulation by plants and soil bacterial community under Cd contaminated soil.
Ecotoxicol Environ Saf. 2020 Dec 15; 206:111383.EE

Abstract

Using accumulators for intercropping in agricultural production can change the heavy metal concentration in the target plants. This study aims to investigate how intercropping wheat (Triticum aestivum L.) and Solanum nigrum L. affects soil bacterial community and cadmium (Cd) absorption in response to Cd-contaminated soil. We compared the concentrations and accumulations of Cd by plants, the activities of soil enzymes and the bacterial community structures of rhizosphere soil in monoculture and intercropping system. Principal component analysis (PCA) ordinations showed that soil bacterial communities were significantly separated by MW and IW, which illustrated intercropping with Solanum nigrum L. impacted the bacterial community structure of wheat. Firstly, the results showed that the biomass of shoots and roots in intercropped wheat (IW) were significantly decreased by 16.19% and 29.38% compared with monoculture wheat (MW) after 60 days after transplanting (DAT). Secondly, the Cd concentration and accumulation of shoots in IW was higher than MW. The Cd accumulation of IW shoots and roots were increased 12.87% and 0.98%, respectively after 60 days DAT. Besides, the enzymes activity [catalase (CAT), urease (UA) and alkaline phosphatase (ALP)] of IW were decreased 35%, 6% and 21%, respectively after 60 days DAT. Finally, the diversity indexes [Abundance-based Coverage Estimator (ACE), Chao and InvSimpson] of IW were lower than MW. These results indicated that intercropping with Solanum nigrum L. inhibited the wheat growth and decreased the bacterial community diversity in wheat rhizosphere, increased the Cd concentration and accumulation in plant tissues of wheat. Therefore, intercropping Solanum nigrum L. and wheat with Cd-contaminated soil might increase the risk of excessive Cd in wheat.

Authors+Show Affiliations

Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.Department of Soil and Water Sciences, Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA.Department of Agricultural and Biological Engineering, IFAS, University of Florida, Gainesville, FL 32611, USA.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Chinese Academy of Natural Resource Economics, Beijing 101149, China.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Beijing Construction Engineering Group Environmental Remediation Co., Ltd. Beijing 100015, China.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, National Engineering Laboratory for Improving Quality of Arable Land, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Department of Soil and Water Sciences, Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA; Department of Agricultural and Biological Engineering, IFAS, University of Florida, Gainesville, FL 32611, USA. Electronic address: fanhongli@caas.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33002822

Citation

Wang, Li, et al. "Effect of Wheat-Solanum Nigrum L. Intercropping On Cd Accumulation By Plants and Soil Bacterial Community Under Cd Contaminated Soil." Ecotoxicology and Environmental Safety, vol. 206, 2020, p. 111383.
Wang L, Zou R, Li YC, et al. Effect of Wheat-Solanum nigrum L. intercropping on Cd accumulation by plants and soil bacterial community under Cd contaminated soil. Ecotoxicol Environ Saf. 2020;206:111383.
Wang, L., Zou, R., Li, Y. C., Tong, Z., You, M., Huo, W., Chi, K., & Fan, H. (2020). Effect of Wheat-Solanum nigrum L. intercropping on Cd accumulation by plants and soil bacterial community under Cd contaminated soil. Ecotoxicology and Environmental Safety, 206, 111383. https://doi.org/10.1016/j.ecoenv.2020.111383
Wang L, et al. Effect of Wheat-Solanum Nigrum L. Intercropping On Cd Accumulation By Plants and Soil Bacterial Community Under Cd Contaminated Soil. Ecotoxicol Environ Saf. 2020 Dec 15;206:111383. PubMed PMID: 33002822.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of Wheat-Solanum nigrum L. intercropping on Cd accumulation by plants and soil bacterial community under Cd contaminated soil. AU - Wang,Li, AU - Zou,Rong, AU - Li,Yuncong C, AU - Tong,Zhaohui, AU - You,Meng, AU - Huo,Wenmin, AU - Chi,Keyu, AU - Fan,Hongli, Y1 - 2020/10/24/ PY - 2020/07/08/received PY - 2020/09/15/revised PY - 2020/09/18/accepted PY - 2020/10/2/pubmed PY - 2020/10/2/medline PY - 2020/10/1/entrez KW - Bacterial community KW - Cadmium KW - Intercropping KW - Phytoremediation KW - Solanum nigrum L KW - Wheat SP - 111383 EP - 111383 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 206 N2 - Using accumulators for intercropping in agricultural production can change the heavy metal concentration in the target plants. This study aims to investigate how intercropping wheat (Triticum aestivum L.) and Solanum nigrum L. affects soil bacterial community and cadmium (Cd) absorption in response to Cd-contaminated soil. We compared the concentrations and accumulations of Cd by plants, the activities of soil enzymes and the bacterial community structures of rhizosphere soil in monoculture and intercropping system. Principal component analysis (PCA) ordinations showed that soil bacterial communities were significantly separated by MW and IW, which illustrated intercropping with Solanum nigrum L. impacted the bacterial community structure of wheat. Firstly, the results showed that the biomass of shoots and roots in intercropped wheat (IW) were significantly decreased by 16.19% and 29.38% compared with monoculture wheat (MW) after 60 days after transplanting (DAT). Secondly, the Cd concentration and accumulation of shoots in IW was higher than MW. The Cd accumulation of IW shoots and roots were increased 12.87% and 0.98%, respectively after 60 days DAT. Besides, the enzymes activity [catalase (CAT), urease (UA) and alkaline phosphatase (ALP)] of IW were decreased 35%, 6% and 21%, respectively after 60 days DAT. Finally, the diversity indexes [Abundance-based Coverage Estimator (ACE), Chao and InvSimpson] of IW were lower than MW. These results indicated that intercropping with Solanum nigrum L. inhibited the wheat growth and decreased the bacterial community diversity in wheat rhizosphere, increased the Cd concentration and accumulation in plant tissues of wheat. Therefore, intercropping Solanum nigrum L. and wheat with Cd-contaminated soil might increase the risk of excessive Cd in wheat. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/33002822/Effect_of_Wheat_Solanum_nigrum_L__intercropping_on_Cd_accumulation_by_plants_and_soil_bacterial_community_under_Cd_contaminated_soil_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(20)31220-3 DB - PRIME DP - Unbound Medicine ER -