ArticleMicrobial cell factories2015
Analysis and cloning of the synthetic pathway of the phytohormone indole-3-acetic acid in the plant-beneficial Bacillus amyloliquefaciens SQR9.
Article in Microbial cell factories, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.
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Who cites it
70 citing papers in PubMed, 1 synthesis or guideline pooled it, 162 citations in OpenAlex.
- Tryptophan metabolism and plant health: mechanisms of action and application prospects.Frontiers in plant science · 2026Pooled it
- Endophyte Bacillus sp. RE35 Enhances Cd Trap in Rice Roots Via Root Cell Wall Remodelling During Colonisation.Plant, cell & environment · 2026Article
- A Promising Strain for Wheat Growth Promotion and Antifungal Activity Against Fungal Phytopathogens:Microorganisms · 2026Article
- Genomic characterization of phosphate-solubilizing Klebsiella variicola strain PSEG-1 from earthworm gut.Scientific reports · 2026Article
- Stage-specific rhizosphere microbial succession is associated with nutrient cycling in the desert plant Leymus racemosus (Lam.) tzvelev.BMC plant biology · 2026Article
- Bacillus inoculation drives fine-scale taxonomic shifts in the bacterial communities of saline-alkaline wheat rhizosphere soil.Environmental microbiome · 2026Article
- Whole-genome analysis reveals the growth-promoting and biocontrol potential of Bacillus amyloliquefaciens Ba. YN.J3 isolated from Avena Sativa.BMC genomics · 2026Article
- A probabilistic approach for predicting indole-3-acetic acid synthesis in bacteria using genomic data.BMC bioinformatics · 2026Article
- Differential Analysis of IAA Anabolism Pathway Based on Bacillus cereus, Bacillus subtilis and Bacillus safensis Genome.Environmental microbiology reports · 2026Article
- Multi-omics reveals the involvement of endophytes in the growth of Moso bamboo (Phyllostachys edulis) shoots.Communications biology · 2026Article
- Genophenotypic insights into biocontrol and growth-promoting mechanisms of Bacillus velezensis BV25 against tomato Fusarium wilt.BMC microbiology · 2026Article
- The coupling effect ofSynthetic and systems biotechnology · 2026Article
- The Volatile Pentadecane From Bacillus Alleviates Plant Iron Deficiency Through Activating the Reduction-Based Fe Uptake System.Plant biotechnology journal · 2026Article
- Article
- Diversity and plant growth-promoting traits of endophytic bacteria isolated from maize cropped in organic and low-input agricultural systems in southern Brazil.Access microbiology · 2026Article
- Influence of Tryptophan Metabolism on the Protective Effect of Weissella paramesenteroides WpK4 in a Murine Model of Chemotherapy-Induced Intestinal Mucositis.Probiotics and antimicrobial proteins · 2025Article
- Auxin-Producing Pseudomonas Recruited by Root Flavonoids Increases Rice Rhizosheath Formation through the Bacterial Histidine Kinase Under Soil Drying.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Bacillus amyloliquefaciens promotes cluster root formation of white lupin under low phosphorus by mediating auxin levels.Plant physiology · 2025Article
- Functional and genomic analyses of plant growth promoting traits in Priestia aryabhattai and Paenibacillus sp. isolates from tomato rhizosphere.Scientific reports · 2025Article
- drSMALL: Database for disease resistance-shaping small molecules derived from the plant microbiome.Crop health · 2025Article
10 more citing papers are in PubMed but not listed here.
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8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe plant growth-promoting rhizobacteria (PGPR) strain Bacillus amyloliquefaciens SQR9, isolated from the cucumber rhizosphere, protects the host plant from pathogen invasion and promotes plant growth through efficient root colonization. The phytohormone indole-3-acetic acid (IAA) has been suggested to contribute to the plant-growth-promoting effect of Bacillus strains. The possible IAA synthetic pathways in B. amyloliquefaciens SQR9 were investigated in this study, using a combination of chemical and genetic analysis.
resultsGene candidates involved in tryptophan-dependent IAA synthesis were identified through tryptophan response transcriptional analysis, and inactivation of genes ysnE, dhaS, yclC, and yhcX in SQR9 led to 86, 77, 55, and 24 % reductions of the IAA production, respectively. The genes patB (encoding a conserved hypothetical protein predicted to be an aminotransferase), yclC (encoding a UbiD family decarboxylase), and dhaS (encoding indole 3-acetaldehyde dehydrogenase), which were proposed to constitute the indole-3-pyruvic acid (IPyA) pathway for IAA biosynthesis, were separately expressed in SQR9 or co-expressed as an entire IAA synthesis pathway cluster in SQR9 and B. subtilis 168, all these recombinants showed increased IAA production. These results suggested that gene products of dhaS, patB, yclB, yclC, yhcX and ysnE were involved in IAA biosynthesis. Genes patB, yclC and dhaS constitute a potential complete IPyA pathway of IAA biosynthesis in SQR9.
conclusionsIn conclusion, biosynthesis of IAA in B. amyloliquefaciens SQR9 occurs through multiple pathways.
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