ArticlePlant cell reports2026
Bacillus velezensis D103 enhances maize drought tolerance via ROS-scavenging and phenylpropanoid pathway activation.
Article in Plant cell reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Functional diversification of CsCAD14 orchestrates synergistic phenylpropanoid biosynthesis to defend gray blight disease in tea plants.Science advances · 2026Article
- Development of abiotic stress tolerance in inoculated apple plantlets with a plant growth-promoting rhizobacterium,Frontiers in microbiology · 2026Article
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Authors and funding
12 authors.
Funding
Abstract
key messageBacillus velezensis D103 improves drought tolerance through enhanced antioxidant activity and lignin deposition, with VIGS analysis indicating roles for ZmAPX3, ZmAOX1B, ZmPER72, and ZmPRX74. Drought stress is a major abiotic constrain on global crop productivity. The application of plant growth-promoting rhizobacteria (PGPR) offers a promising strategy to enhance plant drought tolerance, yet the associated molecular mechanisms remain incompletely characterized. In this study, we examined the role of Bacillus velezensis D103 in maize drought responses by assessing physiological and transcriptomic changes. Under drought stress, D103 inoculation supported plant growth and increased leaf relative water content (RWC), reducing the RWC deficit from 12.4% to 5.1%. This response was accompanied by greater lignin deposition (28.5%) and higher antioxidant enzyme activities. Transcriptome data showed that D103 treatment activated key drought-associated pathways, including glutathione metabolism and phenylpropanoid biosynthesis. VIGS assays suggested that ZmAPX3 (glutathione metabolism), ZmAOX1B (ROS-scavenging), and ZmPER72 and ZmPRX74 (phenylpropanoid metabolism) contribute to the drought tolerance observed in D103-treated plants. Overall, the findings suggest that B. velezensis D103 supports maize drought tolerance by regulating lignin biosynthesis and ROS-related processes. This study provides insights into PGPR-mediated stress resistance responses and highlights strain D103 as a candidate microbial inoculant for improving crop performance under water-limited conditions.
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Registered trials
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