清洁重金属污染土壤的植物修复技术取决于识别可以充当植物修复剂的植物物种。筛选潜在植物修复剂的一种重要方法是评估重金属积累的特征。在这项研究中,通过盆栽试验,对3个三片紫菜品种的Cd耐性和积累特性进行了第一手分析。植物生长结果表明,所有三个三叶紫杉品种均能耐受50mgkg-1土壤Cd浓度。在50mgkg-1土壤Cd浓度下生长4个月后,S.\'Trifasciata\'芽中的Cd生物富集因子,S、三法西斯\'Laurentii\',和S.trifasciata\'SilverHahnii\'分别为1.26、1.30和1.19,而根部分别为12.53、11.43和5.45。这个结果揭示了S.\'Trifasciata\'的0.10、0.12和0.22的相当低的易位因子,S、三法西斯\'Laurentii\',和S.trifasciata\'SilverHahnii\',分别。这些结果表明,所有三个S.trifasciata品种均具有较高的Cd吸收能力,但Cd易位能力较低。结合总Cd积累分布和植物生长特性,S.trifasciata可以设计为其栽培区Cd污染土壤中的植物稳定剂。同时,应探索三七根抗Cd的机理和积累特性。本研究为处理Cd污染土壤以及探索植物对Cd的耐受和积累机制提供了新的资源。
Phytoremediation techniques to clean heavy metal pollution soil depend on identifying plant species that can act as phytoremediators. One important approach to screening potential phytoremediators is to evaluate characteristics of heavy metal accumulation. In this study, we performed firsthand analysis of Cd tolerance and accumulation characteristics of three Sansevieria trifasciata cultivars by pot experiment. Plant growth results showed that all three S. trifasciata cultivars can tolerate 50 mg kg-1 soil Cd concentration. After growth under 50 mg kg-1 soil Cd concentration for 4 months, the Cd bioconcentration factors in the shoots of S. \'Trifasciata\', S. trifasciata \'Laurentii\', and S. trifasciata \'Silver Hahnii\' were 1.26, 1.30, and 1.19, while those in the roots were 12.53, 11.43, and 5.45, respectively. This result reveals the considerably low translocation factors of 0.10, 0.12, and 0.22 for S. \'Trifasciata\', S. trifasciata \'Laurentii\', and S. trifasciata \'Silver Hahnii\', respectively. These results suggest that all three S. trifasciata cultivars had high Cd absorption capacities but low Cd translocation capacities. In combination with total Cd accumulation distribution and plant growth characteristics, S. trifasciata can be designed as a phytostabilizer in Cd-contaminated soils in its cultivation regions. Meanwhile, the mechanism of high Cd tolerance and accumulation characteristics in the roots of S. trifasciata should be explored. This study provides new resources for dealing with Cd-contaminated soils and exploring Cd tolerance and accumulation mechanisms in plants.