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Natural pesticides have attracted substantial interest due to the increase in organic agriculture and enhanced attention to environmental pollution. Plant Growth Promoting Bacteria (PGPB) are applied for both disease control and growth enhancement; PGPBs are known to elicit Induced Systemic Response (ISR) in plants. However, less is known about the effect of botanical pesticides, such as the azadirachtin-containing neem extracts, on plant metabolism. This study aimed to investigate the effects of foliar application of the above-mentioned natural pesticides on the metabolic profiling of tomato. Leaf application of Bacillus subtilis fostered Induced Systemic Resistance (ISR) in treated plants via the Jasmonic acid pathway, and enhanced production of secondary metabolites such as flavonoids, phytoalexins and auxins. Changes in sterols and terpenes, as well as an increase in glucosinolates were also observed. Interestingly, azadirachtin-treated tomatoes also showed an increase in ISR and our results revealed that most of the enriched metabolites are shared with a B. subtilis treatment, suggesting conserved biochemical responses. These (un)expected findings indicate that plants are not insensitive to application of natural pesticide and while Azadirachtin is applied as a direct pesticide, it also stimulates a defense response in tomatoes very similar to B. subtilis induced ISR.
Flavonoids, Limonins, Azadirachta, Indoleacetic Acids, Secondary Metabolism, Azadirachtin; Bacillus subtilis; Induced Systemic Response; Metabolomics; Solanaceae; Solanum lycopersicum, Biodiversity, Cyclopentanes, Plant Leaves, Biological Control Agents, Solanum lycopersicum, Phytoalexins, Oxylipins, Sesquiterpenes, Taxonomy, Bacillus subtilis, Plant Diseases, Plant Proteins
Flavonoids, Limonins, Azadirachta, Indoleacetic Acids, Secondary Metabolism, Azadirachtin; Bacillus subtilis; Induced Systemic Response; Metabolomics; Solanaceae; Solanum lycopersicum, Biodiversity, Cyclopentanes, Plant Leaves, Biological Control Agents, Solanum lycopersicum, Phytoalexins, Oxylipins, Sesquiterpenes, Taxonomy, Bacillus subtilis, Plant Diseases, Plant Proteins
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 67 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |