Rhodopseudomonas palustris PSB-06 Induces Plant Defense and Suppresses the Transmission of Tomato Chlorosis Virus by Bemisia tabaci MED

Dingyihui Lu, Hao Yue, Jianbin Chen, Yan Wei, Zhanhong Zhang, Jun Zeng, Zhuo Zhang, Xuguo Zhou, Limin Zheng, Yang Gao, Jing Peng, Xiaobin Shi, Yong Liu, Deyong Zhang

Research output: Contribution to journalArticlepeer-review


Tomato chlorosis virus (ToCV) is an RNA virus and a member of the Closteroviridae, Crinivirus, that is primarily vectored by Bemisia tabaci MED (B. tabaci MED). An outbreak of ToCV causes destructive damage to tomato plants and other solanaceous vegetables. Currently, ToCV has not been effectively controlled. Rhodopseudomonas palustris PSB-06 is a novel biological agent that is effective at controlling the tobacco mosaic virus (TMV). In this study, we investigated the role of PSB-06 in ToCV-infected tomato plants, and we studied the effects of PSB-06 on plant defense and plant photosynthetic pathways. Furthermore, the effect of PSB-06 on the acquisition and transmission of B. tabaci MED was determined. The results showed that compared with water-treated tomato plants, the contents of jasmonic acid increased, and the activities of catalase, peroxidase and superoxide dismutase increased significantly in tomato plants treated with PSB-06. The relative expression of genes involved in chlorophyll development, chlorophyll metabolism and photosynthesis also increased significantly. Simultaneously, treatment with PSB-06 reduced the acquisition and transmission of B. tabaci MED. We verified the hypothesis that PSB-06 is effective at controlling ToCV by promoting plant defense responses and reducing the amount of ToCV in tomato plants. We also confirmed the ability of B. tabaci MED to transmit ToCV. This study should help to control B. tabaci MED and reduce the spread of ToCV.

Original languageEnglish
Article number2631
Issue number11
StatePublished - Nov 2022

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China (Nos. 32030088, 32072383, and 31972242), the Agriculture Research System of China (Nos. CARS-16-E-17, and CARS-23-D-02) and the Public Welfare Industry Research Project in Xinjiang Academy of Agricultural Sciences (KY2019022).

Publisher Copyright:
© 2022 by the authors.


  • Bemisia tabaci
  • PSB-06
  • plant defense
  • tomato chlorosis virus
  • transmission

ASJC Scopus subject areas

  • Agronomy and Crop Science


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