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Septoria Leaf Blotch and Reduced Nitrogen Availability Alter WRKY Transcription Factor Expression in a Codependent Manner.
Poll, Alistair A; Lee, Jack; Sanderson, Roy A; Byrne, Ed; Gatehouse, John A; Sadanandom, Ari; Gatehouse, Angharad M R; Edwards, Martin G.
Afiliación
  • Poll AA; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
  • Lee J; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
  • Sanderson RA; Department of Biosciences, Durham University, Durham DH1 3LE, UK.
  • Byrne E; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
  • Gatehouse JA; KWS UK Ltd., 56 Church St, Thriplow, Royston SG8 7RE, UK.
  • Sadanandom A; Department of Biosciences, Durham University, Durham DH1 3LE, UK.
  • Gatehouse AMR; Department of Biosciences, Durham University, Durham DH1 3LE, UK.
  • Edwards MG; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
Int J Mol Sci ; 21(11)2020 Jun 11.
Article en En | MEDLINE | ID: mdl-32545181
A major cause of yield loss in wheat worldwide is the fungal pathogen Zymoseptoria tritici, a hemibiotrophic fungus which causes Septoria leaf blotch, the most destructive wheat disease in Europe. Resistance in commercial wheat varieties is poor, however, a link between reduced nitrogen availability and increased Septoria tolerance has been observed. We have shown that Septoria load is not affected by nitrogen, whilst the fungus is in its first, symptomless stage of growth. This suggests that a link between nitrogen and Septoria is only present during the necrotrophic phase of Septoria infection. Quantitative real-time PCR data demonstrated that WRKYs, a superfamily of plant-specific transcription factors, are differentially expressed in response to both reduced nitrogen and Septoria. WRKY39 was downregulated over 30-fold in response to necrotrophic stage Septoria, whilst changes in the expression of WRKY68a during the late biotrophic phase were dependent on the concentration of nitrogen under which wheat is grown. WRKY68a may therefore mediate a link between nitrogen and Septoria. The potential remains to identify key regulators in the link between nitrogen and Septoria, and as such, elucidate molecular markers for wheat breeding, or targets for molecular-based breeding approaches.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Proteínas de Plantas / Ascomicetos / Factores de Transcripción / Triticum / Nitrógeno Tipo de estudio: Prognostic_studies Idioma: En Revista: Int J Mol Sci Año: 2020 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Proteínas de Plantas / Ascomicetos / Factores de Transcripción / Triticum / Nitrógeno Tipo de estudio: Prognostic_studies Idioma: En Revista: Int J Mol Sci Año: 2020 Tipo del documento: Article