Enhancement of cadmium uptake in Sedum alfredii through interactions between salicylic acid/jasmonic acid and rhizosphere microbial communities,Science of the Total Environment

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Enhancement of cadmium uptake in Sedum alfredii through interactions between salicylic acid/jasmonic acid and rhizosphere microbial communities
Science of the Total Environment ( IF 8.2 ) Pub Date : 2024-07-08 , DOI: 10.1016/j.scitotenv.2024.174585
An Shi ₁ , Jing Liu ₁ , Shuang Zou ₁ , Christopher Rensing ₁ , Yi Zhao ₂ , Liming Zhang ₁ , Shihe Xing ₁ , Wenhao Yang ₁

Affiliation

The focus on phytoremediation in soil cadmium (Cd) remediation is driven by its cost-effectiveness and eco-friendliness. Selecting suitable hyperaccumulators and optimizing their growth conditions are key to enhance the efficiency of heavy metal absorption and accumulation. Our research has concentrated on the role of salicylic acid (SA) and jasmonic acid (JA) in facilitating Cd phytoextraction by “ ()” through improved soil-microbe interactions. Results showed that SA or JA significantly boosted the growth, stress resistance, and Cd extraction efficiency in . Moreover, these phytohormones enhanced the chemical and biochemical attributes of the rhizosphere soil, such as pH and enzyme activity, affecting soil-root interactions. High-throughput sequencing analysis has shown that Patescibacteria and enhanced 's growth and Cd extraction by modifying the bioavailability and the chemical conditions of Cd in soil. Structural Equation Model analysis further verified that phytohormones significantly enhanced the interaction between , soil, and microbes, leading to a marked increase in Cd accumulation in the plant. These discoveries emphasized the pivotal role of phytohormones in modulating the hyperaccumulators' response to environmental stress and offered significant scientific support for further enhancing the potential of hyperaccumulators in ecological restoration technologies using phytohormones.

中文翻译：

通过水杨酸/茉莉酸与根际微生物群落之间的相互作用增强景天对镉的吸收

土壤镉 (Cd) 修复中植物修复的关注重点是其成本效益和生态友好性。选择合适的超富集植物并优化其生长条件是提高重金属吸收积累效率的关键。我们的研究集中在水杨酸（SA）和茉莉酸（JA）通过改善土壤-微生物相互作用促进镉植物提取的作用。结果表明，SA 或 JA 显着提高了的生长、抗逆性和 Cd 提取效率。此外，这些植物激素增强了根际土壤的化学和生化属性，例如pH值和酶活性，影响土壤与根系的相互作用。高通量测序分析表明，Patescibacteria 通过改变土壤中 Cd 的生物利用度和化学条件来增强其生长和 Cd 提取。结构方程模型分析进一步证实，植物激素显着增强了植物、土壤和微生物之间的相互作用，导致植物中Cd积累显着增加。这些发现强调了植物激素在调节超积累植物对环境胁迫的反应中的关键作用，并为进一步增强超积累植物在使用植物激素的生态恢复技术中的潜力提供了重要的科学支持。

更新日期：2024-07-08

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