Co-planting ofQuercus nuttallii, Quercus pagodawithSolanum nigrumenhanced their phytoremediation potential to multi-metal contaminated soil
- 27 January 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in International Journal of Phytoremediation
- Vol. 23 (10), 1104-1112
- https://doi.org/10.1080/15226514.2021.1878105
Abstract
To screen the efficient tree-herb co-planting patterns to remediate the heavy metal polluted soil, a greenhouse experiment was conducted for 150 days to examine the plant growth and metals accumulation across three co-planting patterns, including Solanum nigrum (S) co-planted with Quercus nuttallii (NS) or Quecrus pagoda (PS), and those three species are co-planted together (NPS). Results showed that the NPS pattern slightly decreased the tree biomass, while NS and PS treatments improved the plant growth (1.51–10.68%). It is worth noting that the NS treatment significantly (p < 0.05) increased photosynthetic pigment content (82.61–113.93%), net CO2 assimilation (21.44%), and the uptake of Cd (44.58%) in Q. nuttallii; the PS treatment significantly (p < 0.05) increased the net CO2 assimilation (8.61%) and the uptake of Cd (42.23%), Zn (31.18%) in Q. pagoda; and the uptake of Cd and Zn in the NPS co-planting treatment were only slightly increased. For S. nigrum, the photosynthetic pigment content was elevated and the metal accumulation in itself also maintained the relative stable in all the co-planting treatments. Thus, co-planting of Quercus with S. nigrum was a promising way to remediate heavily polluted soil by heavy metals. Novelty statement: Co-planting with multiple plant species, as a novel strategy, has great value for the remediation of heavy metal contaminated soil. The paper aimed to explore the suitable co-planting pattern of Quercus, arbor trees which showed phytoremediation potential, co-planted with Cd hyperaccumulator, Solanum nigrum. The result suggested the co-planting with S. nigrum enhanced the plant growth, photosynthesis, and metals extraction of Q. nuttallii and Q. pagoda. Co-planting also improved ecological adaptation of S. nigrum via elevating pigment content. Thus, co-planting of Quercus with S. nigrum was a promising way to remediate polluted soil.Keywords
This publication has 39 references indexed in Scilit:
- Growth and photosynthetic responses of soybean seedlings to maize shading in relay intercropping system in Southwest ChinaPhotosynthetica, 2014
- Two ecotypes of hyperaccumulators and accumulators affect cadmium accumulation in cherry seedlings by intercroppingEnvironmental Progress & Sustainable Energy, 2014
- Intercropping Competition between Apple Trees and Crops in Agroforestry Systems on the Loess Plateau of ChinaPLOS ONE, 2013
- Phytoremediation of heavy metals—Concepts and applicationsChemosphere, 2013
- Phytoextraction of Metals and Rhizoremediation of PAHs in Co-Contaminated Soil by Co-Planting ofSedum Alfrediiwith Ryegrass (Lolium Perenne) or Castor (Ricinus Communis)International Journal of Phytoremediation, 2013
- Effect of silicon on reducing cadmium toxicity in durum wheat (Triticum turgidum L. cv. Claudio W.) grown in a soil with aged contaminationJournal of Hazardous Materials, 2012
- Co-planting can phytoextract similar amounts of cadmium and zinc to mono-cropping from contaminated soilsEcological Engineering, 2010
- Effects of tree competition on corn and soybean photosynthesis, growth, and yield in a temperate tree-based agroforestry intercropping system in southern Ontario, CanadaEcological Engineering, 2007
- Phytoextraction of Metal-Contaminated Soil by Sedum alfredii H: Effects of Chelator and Co-plantingWater, Air, & Soil Pollution, 2006
- The Spectral Determination of Chlorophylls a and b, as well as Total Carotenoids, Using Various Solvents with Spectrophotometers of Different ResolutionJournal of Plant Physiology, 1994