NDLI: Different Reactions of Potato Varieties to Infection by Potato Leafroll Virus, and Associated Responses by its Vector, Myzus persicae (Sulzer)

Content Provider	Springer Nature Link
Author	Rajabaskar, D. Ding, H. Wu, Y. Eigenbrode, S. D.
Copyright Year	2013
Abstract	Vector-dependent plant pathogens can alter their hosts such that vector behavior and pathogen spread are affected. For example, Potato leafroll virus (PLRV)-induces changes in volatiles emitted by potato plants (Solanum tuberosum L.) that influence settling behavior by Myzus persicae, a principal vector of the virus. Prior work in this pathosystem has utilized a single potato variety, Russet Burbank, but as is true for other plant responses to biotic stresses, responses may differ among plant genotypes. To examine this, PLRV-induced changes in headspace volatile organic compounds (VOCs) and associated aphid responses to these VOCs were compared among four potato varieties (Chipeta, Desiree, IdaRose, and Russet Burbank). Total headspace VOCs differed among the varieties and were differentially induced by PLRV infection such that the effect of variety, infection, and their interaction was significant; two of the varieties had increased concentrations of headspace VOCs, and two did not. MANOVA for the effect of infection and variety on total VOCs and major VOC classes also was significant. A principal component analysis (PCA) partially separated the VOC profiles from the four varieties. Aphid arrestment differed in response to the VOCs of the four varieties, and was greater on those that were more readily infected by PLRV (Desiree and Russet Burbank) as compared with those that were less readily infected (Chipeta and IdaRose). Aphid responses were not clearly related to specific characteristics of blends, such that total VOCs and composition appear to contribute. The four varieties used in this study have distinct pedigrees representative of different cultivated forms of S. tuberosum. Although cultivated potato varieties have been subjected to genetic manipulation by humans, the differences in PLRV induced changes in VOCs nonetheless indicate the potential for complex effects of PLRV infection on host plant VOC emissions, and vector responses in managed, and natural systems.
Starting Page	1027
Ending Page	1035
Page Count	9
File Format	PDF
ISSN	00980331
Journal	Journal of Chemical Ecology
Volume Number	39
Issue Number	7
e-ISSN	15731561
Language	English
Publisher	Springer US
Publisher Date	2013-06-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pathogen induced volatile Host manipulation PLRV Green peach aphid Potato varieties Emigration bioassay Volatile blend Ecology Biochemistry Entomology Biological Microscopy Agriculture
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Ecology, Evolution, Behavior and Systematics

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