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BMC Plant Biol

Title:		Aphid endosymbiont facilitates virus transmission by modulating the volatile profile of host plants
Author(s):		Shi XB; Yan S; Zhang C; Zheng LM; Zhang ZH; Sun SE; Gao Y; Tan XQ; Zhang DY; Zhou XG;
Address:		"Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China. Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA. Institute of Vegetable, Hunan Academy of Agricultural Sciences, Changsha, 410125, China. Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China. dyzhang78@163.com. Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA. xuguozhou@uky.edu"
Journal Title:		BMC Plant Biol
Year:		2021
Volume:		20210129
Issue:		1
Page Number:		67 -
DOI:		10.1186/s12870-021-02838-5
ISSN/ISBN:		1471-2229 (Electronic) 1471-2229 (Linking)
Abstract:		"BACKGROUND: Most plant viruses rely on vectors for their transmission and spread. One of the outstanding biological questions concerning the vector-pathogen-symbiont multi-trophic interactions is the potential involvement of vector symbionts in the virus transmission process. Here, we used a multi-factorial system containing a non-persistent plant virus, cucumber mosaic virus (CMV), its primary vector, green peach aphid, Myzus persicae, and the obligate endosymbiont, Buchnera aphidicola to explore this uncharted territory. RESULTS: Based on our preliminary research, we hypothesized that aphid endosymbiont B. aphidicola can facilitate CMV transmission by modulating plant volatile profiles. Gene expression analyses demonstrated that CMV infection reduced B. aphidicola abundance in M. persicae, in which lower abundance of B. aphidicola was associated with a preference shift in aphids from infected to healthy plants. Volatile profile analyses confirmed that feeding by aphids with lower B. aphidicola titers reduced the production of attractants, while increased the emission of deterrents. As a result, M. persicae changed their feeding preference from infected to healthy plants. CONCLUSIONS: We conclude that CMV infection reduces the B. aphidicola abundance in M. persicae. When viruliferous aphids feed on host plants, dynamic changes in obligate symbionts lead to a shift in plant volatiles from attraction to avoidance, thereby switching insect vector's feeding preference from infected to healthy plants"
Keywords:		Animals Aphids/drug effects/microbiology/physiology/*virology Buchnera/*physiology Capsicum/microbiology/parasitology/*virology Cucumovirus/*physiology Feeding Behavior Host-Parasite Interactions Insect Vectors/physiology Plant Diseases/microbiology/paras;
Notes:		"MedlineShi, Xiao-Bin Yan, Shuo Zhang, Chi Zheng, Li-Min Zhang, Zhan-Hong Sun, Shu-E Gao, Yang Tan, Xin-Qiu Zhang, De-Yong Zhou, Xu-Guo eng 2019JJ30014/Natural Science Foundation of Hunan Province/ CARS-16-E-17, CARS-23-D-02/Agriculture Research System of China/ 32030088, 32072383, 31872932, 31901854/National Natural Science Foundation of China/ England 2021/01/31 BMC Plant Biol. 2021 Jan 29; 21(1):67. doi: 10.1186/s12870-021-02838-5"