AI Article Synopsis
- - The study investigates how biocontrol fungal strains can boost growth and combat leaf spot disease in young olive trees by utilizing secondary metabolites (SMs).
- - Researchers conducted analyses using LC-MS Q-TOF and real-time RT-PCR to assess changes in phenolic compounds and gene expression in olive leaves after treatment with these strains or SMs.
- - The results showed that treated plants had different phenolic profiles, with an increase in flavonoids and a change in the expression of defense-related genes depending on the specific strain or metabolite used.
Article Abstract
Biocontrol fungal strains of the genus can antagonize numerous plant pathogens and promote plant growth using different mechanisms of action, including the production of secondary metabolites (SMs). In this work we analyzed the effects of repeated applications of selected strains or SMs on young olive trees on the stimulation of plant growth and on the development of olive leaf spot disease caused by . In addition, metabolomic analyses and gene expression profiles of olive leaves were carried out by LC-MS Q-TOF and real-time RT-PCR, respectively. A total of 104 phenolic compounds were detected from olive leave extracts and 20 were putatively identified. Targeted and untargeted approaches revealed significant differences in both the number and type of phenolic compounds accumulated in olive leaves after applications, as compared to water-treated plants. Different secoiridoids were less abundant in treated plants than in controls, while the accumulation of flavonoids (including luteolin and apigenin derivatives) increased following the application of specific strain. The induction of defense-related genes, and of genes involved in the synthesis of the secoiridoid oleuropein, was also analyzed and revealed a significant variation of gene expression according to the strain or metabolite applied.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766153 | PMC |
| http://dx.doi.org/10.3390/jof6040369 | DOI Listing |
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