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A protein kinase-major sperm protein gene hijacked by a necrotrophic fungal pathogen triggers disease susceptibility in wheat.
- Source :
-
The Plant journal : for cell and molecular biology [Plant J] 2021 May; Vol. 106 (3), pp. 720-732. Date of Electronic Publication: 2021 Mar 19. - Publication Year :
- 2021
-
Abstract
- Septoria nodorum blotch (SNB), a disease caused by the necrotrophic fungal pathogen Parastagonospora nodorum, is a threat to wheat (Triticum aestivum) production worldwide. Multiple inverse gene-for-gene interactions involving the recognition of necrotrophic effectors (NEs) by wheat sensitivity genes play major roles in causing SNB. One interaction involves the wheat gene Snn3 and the P. nodorum NE SnTox3. Here, we used a map-based strategy to clone the Snn3-D1 gene from Aegilops tauschii, the D-genome progenitor of common wheat. Snn3-D1 contained protein kinase and major sperm protein domains, both of which were essential for function as confirmed by mutagenesis. As opposed to other characterized interactions in this pathosystem, a compatible Snn3-D1-SnTox3 interaction was light-independent, and Snn3-D1 transcriptional expression was downregulated by light and upregulated by darkness. Snn3-D1 likely emerged in Ae. tauschii due to an approximately 218-kb insertion that occurred along the west bank of the Caspian Sea. The identification of this new class of NE sensitivity genes combined with the previously cloned sensitivity genes demonstrates that P. nodorum can take advantage of diverse host targets to trigger SNB susceptibility in wheat.<br /> (© 2021 Society for Experimental Biology and John Wiley & Sons Ltd.)
- Subjects :
- Aegilops microbiology
Disease Susceptibility microbiology
Genes, Plant genetics
Phylogeny
Plant Proteins genetics
Pollen enzymology
Pollen genetics
Protein Kinases genetics
Triticum genetics
Triticum metabolism
Ascomycota metabolism
Host-Pathogen Interactions genetics
Plant Diseases microbiology
Plant Proteins metabolism
Protein Kinases metabolism
Triticum microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 1365-313X
- Volume :
- 106
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- The Plant journal : for cell and molecular biology
- Publication Type :
- Academic Journal
- Accession number :
- 33576059
- Full Text :
- https://doi.org/10.1111/tpj.15194