GmAMT2.1/2.2-dependent ammonium nitrogen and metabolites shape rhizosphere microbiome assembly to mitigate cadmium toxicity.

IF 7.8 1区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY npj Biofilms and Microbiomes Pub Date : 2024-07-24 DOI:10.1038/s41522-024-00532-6
Zhandong Cai, Taobing Yu, Weiyi Tan, Qianghua Zhou, Lingrui Liu, Hai Nian, Tengxiang Lian
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Abstract

Cadmium (Cd), a heavy metal, is negatively associated with plant growth. AMT (ammonium transporter) genes can confer Cd resistance and enhance nitrogen (N) uptake in soybeans. The potential of AMT genes to alleviate Cd toxicity by modulating rhizosphere microbiota remains unkonwn. Here, the rhizosphere microbial taxonomic and metabolic differences in three genotypes, i.e., double knockout and overexpression lines and wild type, were identified. The results showed that GmAMT2.1/2.2 genes could induce soybean to recruit beneficial microorganisms, such as Tumebacillus, Alicyclobacillus, and Penicillium, by altering metabolites. The bacterial, fungal, and cross-kingdom synthetic microbial communities (SynComs) formed by these microorganisms can help soybean resist Cd toxicity. The mechanisms by which SynComs help soybeans resist Cd stress include reducing Cd content, increasing ammonium (NH4+-N) uptake and regulating specific functional genes in soybeans. Overall, this study provides valuable insights for the developing microbial formulations that enhance Cd resistance in sustainable agriculture.

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依赖于 GmAMT2.1/2.2 的铵态氮和代谢产物塑造了根瘤微生物组的组合,以减轻镉的毒性。
重金属镉(Cd)与植物生长呈负相关。AMT(铵转运体)基因可赋予大豆抗镉能力,并提高大豆对氮(N)的吸收。AMT 基因通过调节根瘤微生物群减轻镉毒性的潜力仍有待研究。在此,研究人员确定了三种基因型(即双基因敲除和过表达株系以及野生型)的根瘤微生物分类和代谢差异。结果表明,GmAMT2.1/2.2 基因可通过改变代谢产物诱导大豆吸收有益微生物,如Tumebacillus、Alicyclobacillus 和Penicillium。这些微生物形成的细菌、真菌和跨领域合成微生物群落(SynComs)可以帮助大豆抵抗镉的毒性。SynComs 帮助大豆抵抗镉胁迫的机制包括降低镉含量、增加铵(NH4+-N)吸收和调节大豆的特定功能基因。总之,这项研究为开发提高可持续农业抗镉能力的微生物制剂提供了宝贵的见解。
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来源期刊
npj Biofilms and Microbiomes
npj Biofilms and Microbiomes Immunology and Microbiology-Microbiology
CiteScore
12.10
自引率
3.30%
发文量
91
审稿时长
9 weeks
期刊介绍: npj Biofilms and Microbiomes is a comprehensive platform that promotes research on biofilms and microbiomes across various scientific disciplines. The journal facilitates cross-disciplinary discussions to enhance our understanding of the biology, ecology, and communal functions of biofilms, populations, and communities. It also focuses on applications in the medical, environmental, and engineering domains. The scope of the journal encompasses all aspects of the field, ranging from cell-cell communication and single cell interactions to the microbiomes of humans, animals, plants, and natural and built environments. The journal also welcomes research on the virome, phageome, mycome, and fungome. It publishes both applied science and theoretical work. As an open access and interdisciplinary journal, its primary goal is to publish significant scientific advancements in microbial biofilms and microbiomes. The journal enables discussions that span multiple disciplines and contributes to our understanding of the social behavior of microbial biofilm populations and communities, and their impact on life, human health, and the environment.
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