Intercropping improves heavy metal phytoremediation efficiency through changing properties of rhizosphere soil in bamboo plantation

Bian, Fangyuan; Zhong, Zheke; Li, Chengzhe; Zhang, Xiaoping; Gu, Lei; Zichen, Huang; Gai, Xu; Huang, Zhiyuan

doi:10.1016/j.jhazmat.2021.125898

Cited by 65 publications

(18 citation statements)

References 75 publications

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“…Several studies confirmed that the agronomic practice of intercropping is a valid approach for the removal of HM from contaminated soils through releasing root exudates, modulating soil microbial community, and production of more biomass (Bian et al 2021;Hussain et al 2021;Zou et al 2021). Intercropping also increases the resistance of plants to heavy metals through the reduction of plant oxidative damage and increase of antioxidant activity.…”

Section: Assist Heavy Metals (Hm) Phytoremediation Efficiencymentioning

confidence: 91%

Mechanisms underlying cereal/legume intercropping as nature-based biofortification: A review

Ebbisa

2022

Food Prod Process and Nutr

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The deficiencies of micronutrients known as hidden hunger are severely affecting more than one-half of the world’s population, which is highly related to low bioavailability of micronutrients, poor quality diets, and consumption of cereal-based foods in developing countries. Although numerous experiments proved biofortification as a paramount approach for improving hidden hunger around the world, its effectiveness is highly related to various soil factors, climate conditions, and the adoption rates of biofortified crops. Furthermore, agronomic biofortification may result in the sedimentation of heavy metals in the soil that pose another detrimental effect on plants and human health. In response to these challenges, several studies suggested intercropping as one of the feasible, eco-friendly, low-cost, and short-term approaches for improving the nutritional quality and yield of crops sustainable way. Besides, it is the cornerstone of climate-smart agriculture and the holistic solution for the most vulnerable area to solve malnutrition that disturbs human healthy catastrophically. Nevertheless, there is meager information on mechanisms and processes related to soil-plant interspecific interactions that lead to an increment of nutrients bioavailability to tackle the crisis of micronutrient deficiency in a nature-based solution. In this regard, this review tempted to (1) explore mechanisms and processes that can favor the bioavailability of Zn, Fe, P, etc. in soil and edible parts of crops, (2) synthesize available information on the benefits and synergic role of the intercropping system in food and nutritional security, and (3) outline the bottlenecks influencing the effectiveness of biofortification for promoting sustainable agriculture in sub-Saharan Africa (SSA). Based on this review SSA countries are malnourished due to limited access to diverse diets, supplementation, and commercially fortified food; hence, I suggest integrated research by agronomists, plant nutritionists, and agroecologist to intensify and utilize intercropping systems as biofortification sustainably alleviating micronutrient deficiencies. Graphical Abstract

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Section: Assist Heavy Metals (Hm) Phytoremediation Efficiencymentioning

confidence: 91%

Mechanisms underlying cereal/legume intercropping as nature-based biofortification: A review

Ebbisa

2022

Food Prod Process and Nutr

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“…Houz.) intercropping with Sedum plumbizincicola enhanced HM remediation through changing the abundances of the rhizospheric microbes [ 53 ]. The transcriptional regulation of AMF-induced genes involved in HM accumulation in plants and the nutritional status of soil requires further study.…”

Section: Discussionmentioning

confidence: 99%

Intercropping of Euonymus japonicus with Photinia × fraseri Improves Phytoremediation Efficiency in Cd/Cu/Zn Contaminated Field

Qiu¹,

Liu²,

Lin³

et al. 2022

Biology

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Intercropping plants for phytoremediation is a promising strategy in heavy metal-polluted soils. In this study, two typical greening plant species, Euonymus japonicus (E. japonicus) and Photinia × fraseri (P. × fraseri), were intercropped in a Cd/Cu/Zn-contaminated field. The phytoremediation efficiency was investigated by measuring the plant biomass, metal concentration, and mycorrhizal colonisation, as well as the effects on soil properties, including soil pH; soil total N; and available N, P, K, Cd, Cu, and Zn. The results showed that, compared with the monoculture system, intercropping significantly lowered the available Cd, Cu, and Zn contents, significantly improved the total and available N contents in rhizosphere soils of both plant species, and increased the hyphae colonisation rate of P. × fraseri. In both plants, intercropping significantly improved the total plant biomass. Furthermore, the concentrations Zn and Cd in the root of E. japonicus and Cu concentration in the root of P. × fraseri were enhanced by 58.16%, 107.74%, and 20.57%, respectively. Intercropping resulted in plants accumulating higher amounts of Cd, Cu, and Zn. This was particularly evident in the total amount of Cd in E. japonicus, which was 2.2 times greater than that in the monoculture system. Therefore, this study provides a feasible technique for improving phytoremediation efficiency using greening plants.

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“…Different plant has distinct rhizosphere soil condition due to its own spectrum and speci city of root exudates . Bian et al (2021) have found that acetic acid, malic acid, and n-hexadecanoic acid were closely correlated with multiple bacterial species in rhizosphere for intercropping system of Moso bamboo with Sedum plumbizincicola.…”

Section: Soil Bacterial Community Diversitymentioning

confidence: 96%

Phytoextraction potential of arsenic and cadmium and response of rhizosphere microbial community by intercropping with two types of hyperaccumulators

Wang

Zhou

Xiao

et al. 2022

Environ Sci Pollut Res

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Intercropping with hyperaccumulators/accumulators is a promising alternative to enhance phytoextraction of heavy metal(loid)s in contaminated soil. In this research, a pot experiment was conducted to evaluate the in uences of intercropping As hyperaccumulator Pteris vittata L. with Cd hyperaccumulator Sedum alfredii Hance or accumulator Hylotelephium spectabile (Boreau) H. Ohba on the plant growth, As and Cd phytoextraction, and rhizosphere bacterial microbiota. The results indicated that intercropping can promote the growth of plants. The total biomass of P. vittata, S. alfredii and H. spectabile in intercropping systems was signi cantly improved by 19.9% -34.1%, 16.8% and 11.5%, respectively in comparison with corresponding plant monoculture. The As content in rhizoid and frond of P. vittata when intercropped with S. alfredii was increased by 28.3% and 19.0% (P < 0.05), respectively as compared with P. vittata monoculture, and this treatment acquired the maximum As and Cd accumulation with 2032 and 397 µg•pot -1 , respectively. Intercropping enhanced the soil bacterial community diversity. The genera of Lysobacter in S. alfredii rhizosphere soil and Massilia in P. vittata rhizosphere soil had higher abundance in the intercropping system of P. vittata and S. alfredii. And the signi cantly positive correlation relationships were found between Massilia, Lysobacter and plant As content, and Arthrobacter with plant Cd content, indicating that they may play important roles in As and Cd phytoextraction. The results suggested that intercropping P. vittata with S. alfredii could be a potential strategy for phytoextraction of As and Cd from co-contaminated soil.

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Intercropping improves heavy metal phytoremediation efficiency through changing properties of rhizosphere soil in bamboo plantation

Cited by 65 publications

References 75 publications

Mechanisms underlying cereal/legume intercropping as nature-based biofortification: A review

Mechanisms underlying cereal/legume intercropping as nature-based biofortification: A review

Intercropping of Euonymus japonicus with Photinia × fraseri Improves Phytoremediation Efficiency in Cd/Cu/Zn Contaminated Field

Phytoextraction potential of arsenic and cadmium and response of rhizosphere microbial community by intercropping with two types of hyperaccumulators

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