ArticleBMC microbiology2024
Nitrogen-fixing bacteria promote growth and bioactive components accumulation of Astragalus mongholicus by regulating plant metabolism and rhizosphere microbiota.
Article in BMC microbiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Three plant growth-promoting rhizobacteria from the Qinghai-Tibet Plateau enhanced plant growth and alleviated low-temperature and drought stress.Frontiers in plant science · 2026Article
- Ecotoxicological Impacts of Heavy Metals on Medicinal Plant Quality and Rhizosphere Microbial Communities.Plants (Basel, Switzerland) · 2025Review
- Sustainable lentil intensification in rice-fallow systems through bioaugmentation with atypical rhizobia and endophytes modulates rhizosphere and nodule microbiome dynamics.BMC plant biology · 2025Article
- Effects of Roxithromycin Exposure on the Nitrogen Metabolism and Environmental Bacterial Recruitment ofPlants (Basel, Switzerland) · 2025Article
- Soil microorganism colonization influenced the growth and secondary metabolite accumulation of Bletilla striata (Thunb.) Rchb. F.BMC microbiology · 2025Article
- Endophytic Fungal Diversity and Its Interaction Mechanism with Medicinal Plants.Molecules (Basel, Switzerland) · 2025Review
- Integrated omics analysis of PGPR and AMF effects on soil microbiota and root metabolites inFrontiers in microbiomes · 2025Article
- Insights into microbiome-triterpenoid correlation inFrontiers in microbiology · 2025Article
- Article
- Great diverse rhizobial community nodulatingFrontiers in microbiology · 2024Article
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9 authors.
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Abstract
backgroundThe excessive application of chemical fertilizers in the cultivation of Astragalus mongholicus Bunge results in a reduction in the quality of the medicinal plant and compromises the sustainable productivity of the soil. PGPB inoculant is a hot topic in ecological agriculture research. In the cultivation of Astragalus mongholicus, the screened nitrogen-fixing bacteria can promote plant growth, however, whether it can promote the accumulation of main bioactive components remains unknown. In this study, mixed inoculants containing 5 strains of growth promoting bacteria (Rhizobium T16 , Sinorhizobium T21 , Bacillus J1 , Bacillus G4 and Arthrobacter J2) were used in the field experiment. The metabolic substances in the root tissues of Astragalus mongholicus were identified during the harvest period by non-targeted metabolomics method, and the differential metabolites between groups were identified by statistical analysis. Meanwhile, high-throughput sequencing was performed to analyze the changes of rhizosphere soil and endophytic microbial community structure after mixed microbial treatment.
resultsThe results of non-targeted metabolism indicated a significant increase in the levels of 26 metabolites after treatment including 13 flavonoids, 3 saponins and 10 other components. The contents of three plant hormones (abscisic acid, salicylic acid and spermidine) also increased after treatment, which presumed to play an important role in regulating plant growth and metabolism. Studies on endosphere and rhizosphere bacterial communities showed that Rhzobiaceae, Micromonosporaceae, and Hypomicrobiaceae in endophytic, and Oxalobactereae in rhizosphere were significantly increased after treatment. These findings suggest their potential importance in plant growth promotion and secondary metabolism regulation.
conclusionsThis finding provides a basis for developing nitrogen-fixing bacteria fertilizer and improving the ecological planting efficiency of Astragalus mongholicus.
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