Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations
Intercropping of hyperaccumulators with crops has emerged as a promising method for remediating arsenic (As)-contaminated soil in agroecosystems. However, the response of intercropping hyperaccumulators with different types of legume plants to diverse gradients of As-contaminated soil remains poorly...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323005080 |
| _version_ | 1797812770109915136 |
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| author | Wenjuan Wang Xu Yang Qifeng Mo Yinshi Li Dele Meng Huashou Li |
| author_facet | Wenjuan Wang Xu Yang Qifeng Mo Yinshi Li Dele Meng Huashou Li |
| author_sort | Wenjuan Wang |
| collection | DOAJ |
| description | Intercropping of hyperaccumulators with crops has emerged as a promising method for remediating arsenic (As)-contaminated soil in agroecosystems. However, the response of intercropping hyperaccumulators with different types of legume plants to diverse gradients of As-contaminated soil remains poorly understood. In this study, we assessed the response of plant growth and accumulation of an As hyperaccumulator (Pteris vittata L.) intercropped with two legume plants to three gradients of As-contaminated soil. Results indicated that soil As concentration had a substantial effect on the As uptake by plants. P. vittata growing in slightly As-contaminated soil (80 mg kg−1) exhibited higher As accumulation (1.52–5.49 folds) than those in higher As-contaminated soil (117 and 148 mg kg−1), owing to the lower soil pH in high As-contaminated soil. Intercropping with Sesbania cannabina L. increased As accumulation in P. vittata by 19.3%− 53.9% but decreased in intercropping with Cassia tora L. This finding was attributed to S. cannabina providing more NO3--N to P. vittata to support its growth, and higher resistance to As. The decreased rhizosphere pH in the intercropping treatment also resulted in the increased As accumulation in P. vittata. Meanwhile, the As concentrations in the seeds of the two legume plants met the national food standards(<0.5 mg kg−1). Therefore, the intercropping P. vittata with S. cannabina is a highly effective intercropping system in slightly As-contaminated soil and provides a potent method for As phytoremediation. |
| first_indexed | 2024-03-13T07:43:24Z |
| format | Article |
| id | doaj.art-044b402d3cb4469fb79a831e2e85e203 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-13T07:43:24Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-044b402d3cb4469fb79a831e2e85e2032023-06-03T04:21:25ZengElsevierEcotoxicology and Environmental Safety0147-65132023-07-01259115004Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrationsWenjuan Wang0Xu Yang1Qifeng Mo2Yinshi Li3Dele Meng4Huashou Li5College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, ChinaSchool of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, ChinaCollege of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, ChinaCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, China; Correspondence to: Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, South China Agricultural University, Guangzhou 510642, China.Intercropping of hyperaccumulators with crops has emerged as a promising method for remediating arsenic (As)-contaminated soil in agroecosystems. However, the response of intercropping hyperaccumulators with different types of legume plants to diverse gradients of As-contaminated soil remains poorly understood. In this study, we assessed the response of plant growth and accumulation of an As hyperaccumulator (Pteris vittata L.) intercropped with two legume plants to three gradients of As-contaminated soil. Results indicated that soil As concentration had a substantial effect on the As uptake by plants. P. vittata growing in slightly As-contaminated soil (80 mg kg−1) exhibited higher As accumulation (1.52–5.49 folds) than those in higher As-contaminated soil (117 and 148 mg kg−1), owing to the lower soil pH in high As-contaminated soil. Intercropping with Sesbania cannabina L. increased As accumulation in P. vittata by 19.3%− 53.9% but decreased in intercropping with Cassia tora L. This finding was attributed to S. cannabina providing more NO3--N to P. vittata to support its growth, and higher resistance to As. The decreased rhizosphere pH in the intercropping treatment also resulted in the increased As accumulation in P. vittata. Meanwhile, the As concentrations in the seeds of the two legume plants met the national food standards(<0.5 mg kg−1). Therefore, the intercropping P. vittata with S. cannabina is a highly effective intercropping system in slightly As-contaminated soil and provides a potent method for As phytoremediation.http://www.sciencedirect.com/science/article/pii/S0147651323005080Arsenic concentrationIntercroppingHyperaccumulatorPhytoextraction |
| spellingShingle | Wenjuan Wang Xu Yang Qifeng Mo Yinshi Li Dele Meng Huashou Li Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations Ecotoxicology and Environmental Safety Arsenic concentration Intercropping Hyperaccumulator Phytoextraction |
| title | Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations |
| title_full | Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations |
| title_fullStr | Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations |
| title_full_unstemmed | Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations |
| title_short | Intercropping efficiency of Pteris vittata with two legume plants: Impacts of soil arsenic concentrations |
| title_sort | intercropping efficiency of pteris vittata with two legume plants impacts of soil arsenic concentrations |
| topic | Arsenic concentration Intercropping Hyperaccumulator Phytoextraction |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323005080 |
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