ArticleBMC plant biology2024
Pepper immunity against Ralstonia solanacearum is positively regulated by CaWRKY3 through modulation of different WRKY transcription factors.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Spatiotemporal reprogramming of auxin signaling and resistance outputs across model plants and solanaceae crops underFrontiers in plant science · 2026Review
- A WRKY Transcription Factor,Plants (Basel, Switzerland) · 2025Article
- Strategies to develop climate-resilient chili peppers: transcription factor optimization through genome editing.Planta · 2025Review
- Efficient Virus-Induced Gene Silencing (VIGS) Method for Discovery of Resistance Genes in Soybean.Plants (Basel, Switzerland) · 2025Article
- Advances in WRKY regulation of immune responses in medicinal plants.Frontiers in plant science · 2025Review
- CaWRKY22b Plays a Positive Role in the Regulation of Pepper Resistance toPlants (Basel, Switzerland) · 2024Article
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Authors and funding
8 authors.
Funding
Abstract
backgroundSeveral WRKY transcription factors (TFs), including CaWRKY6, CaWRKY22, CaWRKY27, and CaWRKY40 are known to govern the resistance of pepper (Capsicum annuum L.) plants to Ralstonia solanacearum infestation (RSI) and other abiotic stresses. However, the molecular mechanisms underlying these processes remain elusive.
methodsThis study functionally described CaWRKY3 for its role in pepper immunity against RSI. The roles of phytohormones in mediating the expression levels of CaWRKY3 were investigated by subjecting pepper plants to 1 mM salicylic acid (SA), 100 µM methyl jasmonate (MeJA), and 100 µM ethylene (ETH) at 4-leaf stage. A virus-induced gene silencing (VIGS) approach based on the Tobacco Rattle Virus (TRV) was used to silence CaWRKY3 in pepper, and transiently over-expressed to infer its role against RSI.
resultsPhytohormones and RSI increased CaWRKY3 transcription. The transcriptions of defense-associated marker genes, including CaNPR1, CaPR1, CaDEF1, and CaHIR1 were decreased in VIGS experiment, which made pepper less resistant to RSI. Significant hypersensitive (HR)-like cell death, H
conclusionIt is concluded that CaWRKY3 favorably regulates phytohormone-mediated synergistic signaling, which controls cell death in plant and immunity of pepper plant against bacterial infections.
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