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- W4225271256 endingPage "268" @default.
- W4225271256 startingPage "250" @default.
- W4225271256 abstract "SUMMARY Bacterial wilt, a severe disease involving vascular system blockade, is caused by Ralstonia solanacearum . Although both plant immunity and dehydration tolerance might contribute to disease resistance, whether and how they are related remains unclear. Herein, we showed that immunity against R. solanacearum and dehydration tolerance are coupled and regulated by the Ca Pti1– Ca ERF3 module. Ca Pti1 and Ca ERF3 are members of the serine/threonine protein kinase and ethylene‐responsive factor families, respectively. Expression profiling revealed that CaPti1 and CaERF3 were upregulated by R. solanacearum inoculation, dehydration stress, and exogenously applied abscisic acid (ABA). They in turn phenocopied each other in promoting resistance of pepper ( Capsicum annuum ) to bacterial wilt not only by activating salicylic acid‐dependent CaPR1 , but also by activating dehydration tolerance‐related CaOSM1 and CaOSR1 and inducing stomatal closure to reduce water loss in an ABA signaling‐dependent manner. Our yeast two hybrid assay showed that Ca ERF3 interacted with Ca Pti1, which was confirmed using co‐immunoprecipitation, bimolecular fluorescence complementation, and pull‐down assays. Chromatin immunoprecipitation and electrophoretic mobility shift assays showed that upon R. solanacearum inoculation, CaPR1 , CaOSM1 , and CaOSR1 were directly targeted and positively regulated by Ca ERF3 and potentiated by Ca Pti1. Additionally, our data indicated that the Ca Pti1– Ca ERF3 complex might act downstream of ABA signaling, as exogenously applied ABA did not alter regulation of stomatal aperture by the Ca Pti1– Ca ERF3 module. Importantly, the Ca Pti1– Ca ERF3 module positively affected pepper growth and the response to dehydration stress. Collectively, the results suggested that immunity and dehydration tolerance are coupled and positively regulated by Ca Pti1– Ca ERF3 in pepper plants to enhance resistance against R. solanacearum ." @default.
- W4225271256 created "2022-05-04" @default.
- W4225271256 creator A5001546901 @default.
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- W4225271256 creator A5079738340 @default.
- W4225271256 creator A5084550780 @default.
- W4225271256 creator A5087827305 @default.
- W4225271256 date "2022-05-13" @default.
- W4225271256 modified "2023-10-17" @default.
- W4225271256 title "The <scp><i>Ca</i>Pti1</scp>–<scp><i>Ca</i>ERF3</scp> module positively regulates resistance of <i>Capsicum annuum</i> to bacterial wilt disease by coupling enhanced immunity and dehydration tolerance" @default.
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- W4225271256 doi "https://doi.org/10.1111/tpj.15790" @default.