ArticleThe New phytologist2025
Rhizobacteria prime the activation of plant defense and nutritional responses to suppress aphid populations on barley over time.
Article in The New phytologist, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Revealing Functional Traits of Insect Pest Suppressive Rhizobacterial Strains Through Comparative Genomics.Environmental microbiology · 2026Article
- Nanopore sequencing reveals coordinated host and microbiome responses across barley genotypes.BMC biology · 2026Article
- Rhizobacteria regulate colonising Sitobion avenae aphid populations through induced host resistance and alter plant volatiles promoting early parasitoid recruitment on barley (Hordeum vulgare).Pest management science · 2026Article
- Plant and aphid genotypes modulate legume rhizobium-induced defense against aphids.BMC plant biology · 2026Article
- Amendment Bridges Habitat-Driven Quality Gaps inPlants (Basel, Switzerland) · 2026Article
- From leaves to aphid honeydew: the zucchini plants enrich bacterium to recruit natural enemy to resist herbivore attacks.NPJ biofilms and microbiomes · 2026Article
- Synthetic rhizosphere bacterial communities induce systemic resistance to barley powdery mildew without major shifts in the native bacterial community.Frontiers in microbiology · 2026Article
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Authors and funding
2 authors.
Funding
Abstract
Interactions between plants and soil microbes are widespread and are documented to modulate plant-insect herbivore interactions. Still, it remains unclear how these shape the overall plant defense responses and the mechanisms in suppressing insect populations. We performed bioassays and a time-series global gene expression analysis of barley (Hordeum vulgare) plants to study the underlying molecular pathways induced by two rhizobacteria, Acidovorax radicis or Bacillus subtilis, against Sitobion avenae aphids. Root inoculation by A. radicis or B. subtilis suppressed aphid populations on barley. Analysis of differentially expressed genes and co-expressed gene modules revealed a combination of rhizobacteria and aphid-induced plant responses. Aphid feeding triggered distinct plant responses in rhizobacteria-inoculated barley compared to uninoculated control plants, in phytohormone, glutathione, and phenylpropanoid pathways within 24 h. By day 7, stronger responses were observed in phenylpropanoid and nutrient pathways. By day 21, changes occurred in flavonoid pathways and genes related to aphid-induced tissue damage and repair. Our study suggests that rhizobacteria inoculation of barley against aphids is dynamic and acts through several molecular pathways to modulate and prime plant resistance (defenses) and tolerance (nutrition and growth) to aphids. Future research holds promise for exploiting these interactions for crop protection and pest management in agriculture.
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