AI Article Synopsis
- The study explores how MAMP gene products from Bacillus velezensis and groundnut bud necrosis virus interact with the plant defense system in tomatoes, leading to the activation of key defense genes.
- Secondary metabolites from Bacillus species significantly reduce GBNV symptoms in cowpea, showing a notable decrease in lesions compared to untreated controls.
- Field experiments indicate that using a combination of Bacillus strains as soil and foliar treatments can lower disease incidence and enhance plant growth and yield.
Article Abstract
The present study investigates the reprogramming of plant defense system, upon interaction with MAMP (Microbe Associated Molecular Pattern) gene products including, flagellin (Flg) and elongation factor (EF-Tu) of Bacillus velezensis (VB7) and groundnut bud necrosis virus (GBNV) in tomato (Shivam). The MAMP gene products induced the plant defense genes including, PAL, PPO, LOX, JAR, MYC2 and PDF 1.2. Secondary metabolites of Bacillus spp. at 1000 parts per million (ppm) concentration effectively reduced GBNV symptom expression in cowpea (CO7) up to 83.1 % compared to untreated, GBNV inoculated, control. The secondary metabolites from B. velezensis (VB7) and B. licheniformis (Soya 1) reduced GBNV symptoms in cowpea (CO7) up to 1.7 lesions/cm leaf area compared to 8.6 lesions/cm in virus inoculated control. Further, field study revealed that the combined application of B. velezensis (VB7) and B. licheniformis (Soya1) at 1% (10 mL/L) as, soil and foliar application reduced the percent disease incidence (PDI) up to 10.5 (PDI) compared to 28.4 (PDI) in untreated control plants. Besides, it also improved the plant growth and yield up to 23.5 tonnes/ha compared to 13.8 tonnes/ha in untreated control.
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| http://dx.doi.org/10.1016/j.jviromet.2021.114438 | DOI Listing |
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