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NSs, the Silencing Suppressor of Tomato Spotted Wilt Orthotospovirus, Interferes With JA-Regulated Host Terpenoids Expression to Attract Frankliniella occidentalis.


ABSTRACT: Tomato spotted wilt orthotospovirus (TSWV) causes serious crop losses worldwide and is transmitted by Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). NSs protein is the silencing suppressor of TSWV and plays an important role in virus infection, cycling, and transmission process. In this research, we investigated the influences of NSs protein on the interaction of TSWV, plants, and F. occidentalis with the transgenic Arabidopsis thaliana. Compared with the wild-type Col-0 plant, F. occidentalis showed an increased number and induced feeding behavior on transgenic Arabidopsis thaliana expressing exogenous NSs. Further analysis showed that NSs reduced the expression of terpenoids synthesis-related genes and the content of monoterpene volatiles in Arabidopsis. These monoterpene volatiles played a repellent role in respect to F. occidentalis. In addition, the expression level of plant immune-related genes and the content of the plant resistance hormone jasmonic acid (JA) in transgenic Arabidopsis were reduced. The silencing suppressor of TSWV NSs alters the emission of plant volatiles and reduces the JA-regulated plant defenses, resulting in enhanced attractiveness of plants to F. occidentalis and may increase the transmission probability of TSWV.

SUBMITTER: Du J 

PROVIDER: S-EPMC7758462 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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NSs, the Silencing Suppressor of Tomato Spotted Wilt Orthotospovirus, Interferes With JA-Regulated Host Terpenoids Expression to Attract <i>Frankliniella occidentalis</i>.

Du Jiao J   Song Xiao-Yu XY   Shi Xiao-Bin XB   Tang Xin X   Chen Jian-Bin JB   Zhang Zhan-Hong ZH   Chen Gong G   Zhang Zhuo Z   Zhou Xu-Guo XG   Liu Yong Y   Zhang De-Yong DY  

Frontiers in microbiology 20201210


Tomato spotted wilt orthotospovirus (TSWV) causes serious crop losses worldwide and is transmitted by <i>Frankliniella occidentalis</i> (Pergande) (Thysanoptera: Thripidae). NSs protein is the silencing suppressor of TSWV and plays an important role in virus infection, cycling, and transmission process. In this research, we investigated the influences of NSs protein on the interaction of TSWV, plants, and <i>F. occidentalis</i> with the transgenic <i>Arabidopsis thaliana</i>. Compared with the w  ...[more]

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