| Title: | Molecular and Biochemical Mechanisms of Elicitors in Pest Resistance |
| Author(s): | Malook SU; Maqbool S; Hafeez M; Karunarathna SC; Suwannarach N; |
| Address: | "Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand. Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518100, China. Department of Chemistry, University of Agriculture Faisalabad, Sub-Campus Burewala, Faisalabad 38000, Pakistan. State Key Laboratory of Rice Biology, Ministry of Agriculture, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China. Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China" |
| ISSN/ISBN: | 2075-1729 (Print) 2075-1729 (Electronic) 2075-1729 (Linking) |
| Abstract: | "Insect herbivores have a variety of life cycles and feeding habits, making them extremely diverse. With their host plants, they form close relationships and suppress their defense mechanisms. Molecular elicitors are the key bio-elements in the detection and recognition of attacking enemies in tissue consumption. Insect oral secretion, frass, and fluid of egg deposition contain biologically active molecules called herbivore-associated elicitors (HAEs) that are recognized by pattern-recognition receptors (PRRs). Many plants distinguish insect feeding from wounding by HAEs present in their oral secretions (OS) and induce local and/or systemic responses against arthropod feeding. PRRs perceive HAEs in the oral secretion of caterpillars in a species-specific manner to elicit exclusive defense responses. HAEs-PRRs interactions induce plant resistance by reprogramming plant metabolism and transcriptional machinery. Quantitative, timely, and coordinated plant response initiate early signaling events, including Ca(2+), reactive oxygen species (ROS), and mitogen-activated protein kinases (MAPKs). However, in insect herbivory, little is known about the molecular basis of signal transduction and regulation of plant resistance. We discuss here how early signaling cascades converge into the accumulation of phytohormones that regulate downstream special metabolites against herbivores. In this review, we propose a hypothetical model of PPRs-HAEs-mediated-induced responses in plants and discuss how PRRs-HAEs interactions elicit short- and long-term induced defenses in plants. The understanding of PRRs-HAEs interactions will help to explore the fundamental molecular mechanisms of host manipulation and may generate prospects to develop novel pest-resistance strategies" |
| Keywords: | herbivore-associated elicitors pattern-recognition receptors plant defense secondary metabolites signaling metabolites; |
| Notes: | "PubMed-not-MEDLINEMalook, Saif Ul Maqbool, Saiqa Hafeez, Muhammad Karunarathna, Samantha Chandranath Suwannarach, Nakarin eng Review Switzerland 2022/06/25 Life (Basel). 2022 Jun 6; 12(6):844. doi: 10.3390/life12060844" |
