Chemical Identity and Functional Characterization of Semiochemicals That Promote the Interactions between Rice Plant and Rice Major Pest Nilaparvata lugens

A - Papers appearing in refereed journals

Zhang, Z., Liu, Y., Portaluri, V., Woodcock, C. M., Pickett, J. A., Wang, S. and Zhou, J-J. 2021. Chemical Identity and Functional Characterization of Semiochemicals That Promote the Interactions between Rice Plant and Rice Major Pest Nilaparvata lugens. Journal of Agricultural and Food Chemistry - JAFC. 69 (16), pp. 4635-end. https://doi.org/10.1021/acs.jafc.1c01135

AuthorsZhang, Z., Liu, Y., Portaluri, V., Woodcock, C. M., Pickett, J. A., Wang, S. and Zhou, J-J.
Abstract

The interaction between food crops and insect pests is mediated by semiochemicals emitted from host plants. These semiochemicals are natural behavioral modifiers and act on the insect olfactory system to locate hosts and preys. In this study, eight rice neuroactive semiochemicals were identified from rice varieties by GC–EAG and GC–MS. Their ability to modify rice pest behaviors was further studied as individual chemicals and physiologically relevant blend. The total amount of each semiochemical and the expression of their biosynthesis genes were significantly higher in pest susceptible variety than in pest-resistant variety and upregulated by the infestation of the pest Nilaparvata lugens (BPH). The semiochemicals emitted by uninfested plants (UIRVs) were more attractive to BPHs. Interestingly, the attractiveness of UIRVs was significantly reduced by the addition of the blend that mimics the natural composition of these semiochemicals emitted by infested plants (IRVs). Our study suggests a mechanism for the spread of pest infestation from infested plants to uninfested plants nearby. UIRVs initially serve as attractive signals to rice insect pests. The pest infestation changes the rice semiochemical profile to be less attractive or even repellent, which pushes further colonization to uninfested plants nearby. The identified semiochemicals can be used for crop protection based on a push–pull strategy.

KeywordsSemiochemical; Terpenes; Pest colonization; Push−pull; Nilaparvata lugens; Brown planthopper; Rice ; Pest resistance
Year of Publication2021
JournalJournal of Agricultural and Food Chemistry - JAFC
Journal citation69 (16), pp. 4635-end
Digital Object Identifier (DOI)https://doi.org/10.1021/acs.jafc.1c01135
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeUK-China Collaboration for production of biologically active homoisoprenoids and their eventual use for pest control
BB/L001683
Output statusPublished
Publication dates
Online19 Apr 2021
Publication process dates
Accepted06 Apr 2021
PublisherAmerican Chemical Society (ACS)
ISSN0021-8561

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