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Protein Elicitor PeBL1 of Brevibacillus laterosporus Enhances Resistance Against Myzus persicae in Tomato

The State Key Laboratory for Bio-Pesticides Engineering of Plant Disease Biocontrol and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Science, No. 12 Zhong-Guan-Cun South Street, Beijing 100081, China
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Pathogens 2020, 9(1), 57; https://doi.org/10.3390/pathogens9010057
Received: 26 November 2019 / Revised: 9 January 2020 / Accepted: 10 January 2020 / Published: 14 January 2020
(This article belongs to the Special Issue Plant-Microbe-Invertebrate Pest Interactions)
Myzus persicae, a destructive aphid of tomato usually managed by chemical pesticides, is responsible for huge annual losses in agriculture. In the current work, a protein elicitor, PeBL1, was investigated for its capacity to induce a defense response against M. persicae in tomato. Population growth rates of M. persicae (second and third generation) decreased with PeBL1 treatments as compared with controls. In a host selection assay, M. persicae showed preference for colonizing control plants as compared to tomato seedlings treated with PeBL1. Tomato leaves treated with PeBL1 gave rise to a hazardous surface environment for M. persicae due to formation of trichomes and wax. Jasmonic acid (JA), salicylic acid (SA), and ethylene (ET) showed significant accumulation in tomato seedlings treated by PeBL1. The following results showed that PeBL1 significantly modified the tomato leaf surface structure to reduce reproduction and deter colonization by M. persicae. Defense processes also included activation of JA, SA, and ET pathways. The study provides evidence for use of PeBL1 in the protection of tomato from M. persicae. View Full-Text
Keywords: PeBL1; aphid resistance; salicylic acid pathway; jasmonic acid pathway; defense response; feeding behavior PeBL1; aphid resistance; salicylic acid pathway; jasmonic acid pathway; defense response; feeding behavior
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MDPI and ACS Style

Javed, K.; Qiu, D. Protein Elicitor PeBL1 of Brevibacillus laterosporus Enhances Resistance Against Myzus persicae in Tomato. Pathogens 2020, 9, 57.

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