ArticleThe New phytologist2020
The TuMYB46L-TuACO3 module regulates ethylene biosynthesis in einkorn wheat defense to powdery mildew.
Article in The New phytologist, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 59 citations in OpenAlex.
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- A module with multiple transcription factors positively regulates powdery mildew resistance in grapevine.Plant biotechnology journal · 2025Article
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- NF-YC15 transcription factor activates ethylene biosynthesis and improves cassava disease resistance.Plant biotechnology journal · 2024Article
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- The MYB Transcription FactorInternational journal of molecular sciences · 2024Article
- Nano protective membrane coated wheat to resist powdery mildew.Frontiers in plant science · 2024Article
- Regulation of hormone pathways in wheat infested by Blumeria graminis f. sp. tritici.BMC plant biology · 2023Article
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- Genome-wide characterization of 2OGD superfamily for mining of susceptibility factors responding to various biotic stresses inPhysiology and molecular biology of plants : an international journal of functional plant biology · 2023Article
- Review
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12 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Powdery mildew disease, elicited by the obligate fungal pathogen Blumeria graminis f.sp. tritici (Bgt), causes widespread yield losses in global wheat crop. However, the molecular mechanisms governing wheat defense to Bgt are still not well understood. Here we found that TuACO3, encoding the 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase functioning in ethylene (ET) biosynthesis, was induced by Bgt infection of the einkorn wheat Triticum urartu, which was accompanied by increased ET content. Silencing TuACO3 decreased ET production and compromised wheat defense to Bgt, whereas both processes were enhanced in the transgenic wheat overexpressing TuACO3. TuMYB46L, phylogenetically related to Arabidopsis MYB transcription factor AtMYB46, was found to bind to the TuACO3 promoter region in yeast-one-hybrid and EMSA experiments. TuMYB46L expression decreased rapidly following Bgt infection. Silencing TuMYB46L promoted ET content and Bgt defense, but the reverse was observed when TuMYB46L was overexpressed. Hence, decreased expression of TuMYB46L permits elevated function of TuACO3 in ET biosynthesis in Bgt-infected wheat. The TuMYB46L-TuACO3 module regulates ET biosynthesis to promote einkorn wheat defense against Bgt. Furthermore, we found four chitinase genes acting downstream of the TuMYB46L-TuACO3 module. Collectively, our data shed a new light on the molecular mechanisms underlying wheat defense to Bgt.
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