The genetic interplay in Impatiens downy mildew

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A research team has meticulously analyzed the transcriptional response of Impatiens walleriana to Plasmopara obducens infection, revealing between 3,000 and 4,500 differentially expressed transcripts at various stages of the disease.

Through this study, they have constructed a de novo transcriptome assembly that identified key genes involved in the plant susceptibility, including several stress response genes, receptor-like kinases (RLKs), and resistance genes. This investigation not only enhances our understanding of the molecular interactions between I. walleriana and its pathogen, but also provides a fundamental resource for future efforts to engineer disease resistance in this economically significant ornamental crop.

Downy mildews, including impatiens downy mildew (IDM), pose severe threats to both agronomic and ornamental crops, significantly impacting industries like floriculture.

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