Abstract：
In recent years, heavy metal pollution has become a global environmental problem and poses a great threat to the health of people and ecosystems. Therefore, strategies for the effective remediation of Cd from contaminated soil are urgently needed. In this study, ryegrass was utilized as a remediation plant, and its remediation potential was enhanced through the application of Citric Acid (CA) in conjunction with Bacillus megaterium (B. megaterium). The P3 treatment (CA + Bacillus megaterium) exhibited a significantly higher efficiency in promoting cadmium extraction by ryegrass, resulting in a 1.79-fold increase in shoot cadmium accumulation compared to the control group (CK) with no Bacillus megaterium or CA. Moreover, the P3 treatment led to an increased abundance of Actinobacteriota, Acidobacteriota, and Patescibacteria in the rhizosphere. The concentration of amino derivatives (such as betaine, sulfolithocholylglycine, N-alpha-acetyl-lysine, glycocholic acid, arginyl-threonine) showed significant upregulation following the P3 treatment. In summary, this study proposes a viable approach for phytoremediation of soil contaminated with cadmium by harnessing the mobilizing abilities of soil bacteria.
Our aim was to gain a comprehensive understanding of the mechanisms involved in phytoremediation. These findings contribute to the existing knowledge by providing insights into the mechanism of phytoremediation in Cd-contaminated soil. They are expected to serve as a theoretical foundation for further elucidation of the phytoremediation mechanisms employed in Cd-contaminated soil.
Our aim was to gain a comprehensive understanding of the mechanisms involved in phytoremediation. These findings contribute to the existing knowledge by providing insights into the mechanism of phytoremediation in Cd-contaminated soil. They are expected to serve as a theoretical foundation for further elucidation of the phytoremediation mechanisms employed in Cd-contaminated soil.
摘要：
近年来,重金属污染已成为全球性的环境问题，对人类和生态系统的健康构成了极大的威胁。因此,迫切需要有效修复污染土壤中Cd的策略。在这项研究中,黑麦草被用作修复植物，通过将柠檬酸（CA）与巨大芽孢杆菌（B.巨大的）。P3处理（CA+巨大芽孢杆菌）在促进黑麦草提取镉方面表现出明显更高的效率，与没有巨大芽孢杆菌或CA的对照组（CK）相比，芽镉的积累增加了1.79倍。此外，P3治疗导致放线菌的丰度增加，酸杆菌,和根际的杆菌。氨基衍生物（如甜菜碱，硫酸胆酰甘氨酸，N-α-乙酰赖氨酸,甘胆酸，精氨酰-苏氨酸）在P3治疗后显示出显着的上调。总之,本研究通过利用土壤细菌的动员能力，提出了一种可行的镉污染土壤植物修复方法。
我们的目标是全面了解植物修复的机制。这些发现通过提供对Cd污染土壤中植物修复机制的见解，为现有知识做出了贡献。它们有望为进一步阐明Cd污染土壤中的植物修复机制提供理论基础。
我们的目标是全面了解植物修复的机制。这些发现通过提供对Cd污染土壤中植物修复机制的见解，为现有知识做出了贡献。它们有望为进一步阐明Cd污染土壤中的植物修复机制提供理论基础。
