ArticlePlant physiology2023
The herbaceous peony transcription factor WRKY41a promotes secondary cell wall thickening to enhance stem strength.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 47 citations in OpenAlex.
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- Identification and Functional Studies on the Role ofInternational journal of molecular sciences · 2024Article
- Genome-Wide Identification and Characterization of Lignin Synthesis Genes in Maize.International journal of molecular sciences · 2024Article
- Establishment of a Homologous Silencing System with Intact-Plant Infiltration and Minimized Operation for Studying Gene Function in Herbaceous Peonies.International journal of molecular sciences · 2024Article
- Crosstalk Between the SlNAC48/SlNAC89-SlXTH23 Module and ABA Signalling Enhances Drought Tolerance in Tomato by Regulating Stomatal Closure.Physiologia plantarumArticle
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5 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Stem bending or lodging caused by insufficient stem strength is an important limiting factor for plant production. Secondary cell walls play a crucial role in plant stem strength, but whether WRKY transcription factors can positively modulate secondary cell wall thickness are remain unknown. Here, we characterized a WRKY transcription factor PlWRKY41a from herbaceous peony (Paeonia lactiflora), which was highly expressed in stems. PlWRKY41a functioned as a nucleus-localized transcriptional activator and enhanced stem strength by positively modulating secondary cell wall thickness. Moreover, PlWRKY41a bound to the promoter of the XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE4 (PlXTH4) and activated the expression of PlXTH4. PlXTH4-overexpressing tobacco (Nicotiana tabacum) had thicker secondary cell walls, resulting in enhanced stem strength, while PlXTH4-silenced P. lactiflora had thinner secondary cell walls, showing decreased stem strength. Additionally, PlWRKY41a directly interacted with PlMYB43 to form a protein complex, and their interaction induced the expression of PlXTH4. These data support that the PlMYB43-PlWRKY41a protein complex can directly activate the expression of PlXTH4 to enhance stem strength by modulating secondary cell wall thickness in P. lactiflora. The results will enhance our understanding of the formation mechanism of stem strength and provide a candidate gene to improve stem straightness in plants.
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