数字农科院2.0

Interaction between the flagellum of Candidatus Liberibacter asiaticus and the vitellogenin-like protein of Diaphorina citri significantly influences CLas titer

文献类型： 外文期刊

作者： Peng, Tao;Yuan, Yingzhe;Huang, Aijun;He, Jun;Fu, Shimin;Duan, Shuo;Yi, Long;Yuan, Chenyang;Yuan, Huizhu;Wang, Xuefeng;Zhou, Changyong

作者机构：

关键词： CLas;Huanglongbing;Diaphorina citri;flagella;vitellogenin

期刊名称： FRONTIERS IN MICROBIOLOGY

ISSN：

年卷期： 2023 年 14 卷

页码：

收录情况： SCIE（2023版）

摘要： Huanglongbing (HLB) is a global devastating citrus disease that is mainly caused by Candidatus Liberibacter asiaticus (CLas). It is mostly transmitted by the insect Asian citrus psyllid (ACP, Diaphorina citri) in a persistent and proliferative manner. CLas traverses multiple barriers to complete an infection cycle and is likely involved in multiple interactions with D. citri. However, the protein-protein interactions between CLas and D. citri are largely unknown. Here, we report on a vitellogenin-like protein (Vg_VWD) in D. citri that interacts with a CLas flagellum (flaA) protein. We found that Vg_VWD was upregulated in CLas-infected D. citri. Silencing of Vg_VWD in D. citri via RNAi silencing significantly increased the CLas titer, suggesting that Vg_VWD plays an important role in the CLas-D. citri interaction. Agrobacterium-mediated transient expression assays indicated that Vg_VWD inhibits BAX- and INF1-triggered necrosis and suppresses the callose deposition induced by flaA in Nicotiana benthamiana. These findings provide new insights into the molecular interaction between CLas and D. citri.

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