Cadmium and zinc accumulation and tolerance in two Egyptian cultivars (S53 and V120) of Helianthus annuus L. as potential phytoremediator.

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Phytoremediation Pub Date : 2024-04-21 DOI:10.1080/15226514.2024.2343842

Ahmed A Sorour, R. Badr, Nermen Mahmoud, Amani Abdel-Latif

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引用次数: 0

Abstract

One of the most important oil crops in the world, sunflower (Helianthus annuus L.), is recognized to help in soil phytoremediation. Heavy metal (HM) contamination is one of the most abiotic challenges that may affect the growth and productivity of such an important crop plant. We studied the influence of HM-contaminated soils on metal homeostasis and the potential hypertolerance mechanisms in two sunflower Egyptian cultivars (V120 and S53). Both cultivars accumulated significantly higher cadmium concentrations in their roots compared to their shoots during Cd and Zn/Cd treatments. Higher root concentrations of 121 mg g-1 dry weight (DW) and 125 mg g-1 DW were measured in V120 plants compared to relatively lower values of 111 mg g-1 DW and 105 mg g-1 DW in the roots of S53 plants, respectively. Cadmium contamination significantly upregulated the expression of heavy metal ATPases (HaHMA4) in the shoots of V120 plants. On the other hand, their roots displayed a notable expression of HaHMA3. This study indicates that V120 plants accumulated and sequestered Cd in their roots. Therefore, it is advised to cultivate the V120 cultivar in areas contaminated with heavy metals as it is a promising Cd phytoremediator.

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镉和锌在两种埃及栽培品种（S53 和 V120）中的积累和耐受性，可作为潜在的植物修复剂。

向日葵（Helianthus annuus L.）是世界上最重要的油料作物之一，被认为有助于土壤植物修复。重金属（HM）污染是可能影响向日葵这种重要作物的生长和产量的最大非生物挑战之一。我们研究了埃及向日葵的两个栽培品种（V120 和 S53）在重金属污染土壤中对金属平衡的影响以及潜在的超耐受机制。在镉和锌/镉处理过程中，这两种向日葵根部积累的镉浓度明显高于芽部。V120 植物根部的镉浓度较高，分别为 121 毫克/克（干重）和 125 毫克/克（干重），而 S53 植物根部的镉浓度相对较低，分别为 111 毫克/克（干重）和 105 毫克/克（干重）。镉污染明显提高了 V120 植物芽中重金属 ATP 酶（HaHMA4）的表达。另一方面，其根部的 HaHMA3 表达量明显增加。这项研究表明，V120 植物在根部积累并固着镉。因此，建议在重金属污染地区种植 V120 栽培品种，因为它是一种很有前景的镉植物修复剂。

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来源期刊

International Journal of Phytoremediation 环境科学-环境科学

CiteScore

7.60

自引率

5.40%

发文量

145

审稿时长

3.4 months

期刊介绍： The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.