Plant immunity responses to aphid
Author of the article:YUAN Liang1,2** GUO Hui-Juan2 SUN Yu-Cheng2 XIAO Tie-Guang1*** GE Feng2
Author's Workplace：1. College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; 2. State Key Laboratory of Integrated of Pest Insect and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing 100101, China
Key Words：aphid, salicylic acid, zig-zag model, resistance gene, NB-LRR, effector, saliva gland, immunity response
Abstract：Plants have developed sets of complex and accurate defense mechanisms during their long-term co-evolution with herbivorous insects, and these defenses can distinguish specific pests among the various feeding guilds of insects. Recent studies illustrate several of the molecular mechanisms involved in plant-aphid interactions, including phytohormone-mediated induced defense, plant innate immune system and gene-for-gene resistance. Aphid salivary components not only make it easier for aphids to penetrate the phloem and suppress the PAMP-triggered immunity of plants, but trigger plant immunity through PRRs (pattern recognition receptors) of NBS-LRR. This paper reviews recent literature on phytohormone-mediated induced defense, plant immunity defense and the function of aphid effectors. The zig-zag model from phytopathology provides theoretical support for understanding the defensive responses of plants triggered by aphid salivary components, revealing additional mechanisms of plant-aphid interactions, and provides novel strategies for pest control.