Bioprospecting of a Native Plant Growth-Promoting Bacterium Bacillus cereus B6 for Enhancing Uranium Accumulation by Sudan Grass (Sorghum sudanense (Piper) Stapf)
文献类型： 外文期刊
作者： Wu, Longyuan 1 ; Zhang, Lijuan 2 ; Wang, Ning 2 ; Huang, Wei 2 ; Wang, Yanzhi 1 ; Sun, Meng 1 ; Zheng, Guofeng 4 ; Wang, Wei 2 ; Shi, Chong 1 ;
作者机构： 1.Xinjiang Agr Univ, Coll Resources & Environm, Urumqi 830052, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Appl Microbiol, Xinjiang Lab Special Environm Microbiol, Urumqi 830091, Peoples R China
3.Xinjiang Agr Univ, Coll Grassland Sci, Urumqi 830091, Peoples R China
4.Nucl & Radiat Safety Ctr, Beijing 100082, Peoples R China
关键词：
期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 14 卷 1 期
页码：
收录情况： SCI
摘要： Phytoremediation technology is viewed as a potential solution for addressing soil uranium contamination. Sudan grass (Sorghum sudanense (Piper) Stapf.), noted for its robust root structure and resilience to heavy metals, has garnered significant attention. This paper investigates a strain of uranium-tolerant bacterium, B6, obtained from the inter-root environment of native plants in soil contaminated with uranium tailings. The bacterium was identified as Bacillus cereus. Genomic analyses and assessment of uranium tolerance-promoting properties showed that strain B6 not only exhibited high uranium tolerance, but also possessed beneficial properties such as phosphorus solubilization and iron-producing carriers. In this study, we used strain B6 as an inoculant in combination with Sudan grass for germination and potting experiments. The findings demonstrated that Bacillus cereus B6 could substantially mitigate the adverse effects of uranium stress on Sudan grass, boost the plant's antioxidant response, significantly increase the root length and dry biomass of Sudan grass, and facilitate the accumulation of uranium in the roots, as well as its translocation to the aboveground portions. The study showed that PGPB strain B6 can significantly enhance the effect of plant accumulation of uranium and increase the potential of Sudan grass to become a uranium-rich plant, which provides an important scientific basis and application prospect for the use of microbial-assisted Sudan grass remediation technology to treat uranium-contaminated soil.
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