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Abstract
Late blight is a devastating potato disease worldwide, caused by Phytophthora infestans. The P. infestans strain 2013-18-306 from Yunnan is a "supervirulent race" that overcomes all 11 known late blight resistance genes (R1 to R11) from Solanum demissum. In a previous study, we identified a diploid wild-type potato JAM1-4 (S. jamesii) with high resistance to 2013-18-306. dRenSeq analysis indicated the presence of novel R genes in JAM1-4. RNA-Seq was used to analyze the late blight resistance response genes and defense regulatory mechanisms of JAM1-4 against 2013-18-306. Gene ontology enrichment and KEGG pathway analysis showed that many disease-resistant pathways were significantly enriched. Analysis of differentially expressed genes (DEGs) revealed an active disease resistance mechanism of JAM1-4, and the essential role of multiple signal transduction pathways and secondary metabolic pathways comprised of SA-JA-ET in plant immunity. We also found that photosynthesis in JAM1-4 was inhibited to promote the immune response. Our study reveals the pattern of resistance-related gene expression in response to a super race strain of potato late blight and provides a theoretical basis for further exploration of potato disease resistance mechanisms, discovery of new late blight resistance genes, and disease resistance breeding.
Original language | English |
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Pages (from-to) | 1375-1387 |
Number of pages | 13 |
Journal | Phytopathology |
Volume | 110 |
Issue number | 8 |
Early online date | 16 Jun 2020 |
DOIs | |
Publication status | Published - 31 Jul 2020 |
Keywords
- DRenSeq
- Phytophthora infestans
- Potato
- Transcriptome
ASJC Scopus subject areas
- Agronomy and Crop Science
- Plant Science
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Dive into the research topics of 'New Findings on the Resistance Mechanism of an Elite Diploid Wild Potato Species JAM1-4 in Response to a Super Race Strain of Phytophthora infestans'. Together they form a unique fingerprint.Projects
- 1 Finished
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Studying Co Evolution in Agriculture to Inform NLR Deployment (Industrial Partnership Award - IPA)
Hein, I. (Investigator)
Biotechnology and Biological Sciences Research Council
1/12/19 → 31/08/23
Project: Research