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Time-Series Comparative Transcriptome Analyses of Two Potato Cultivars with Different Verticillium Wilt Resistance
Guoquan Fan1,2, Zhiguo Ren3, Yanling Gao1,2
1Institute of Industrial Crops, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China.
Plants (Basel, Switzerland)
|January 10, 2026
Summary
This study reveals key molecular mechanisms of potato resistance to Verticillium wilt (VW). Researchers identified specific gene expression patterns and metabolic shifts in resistant potato cultivars, offering new targets for crop improvement.
Area of Science:
- Plant Pathology
- Molecular Biology
- Genomics
Background:
- Verticillium wilt (VW) is a devastating disease affecting potato crops globally.
- Limited comparative transcriptomic data exists for VW resistance in potato.
Purpose of the Study:
- To conduct a comprehensive comparative RNA-seq analysis of VW resistance in potato.
- To identify differentially expressed genes (DEGs) and candidate genes associated with VW resistance.
Main Methods:
- Comparative RNA-sequencing (RNA-seq) analysis of resistant (LS8) and susceptible (SP) potato cultivars.
- Time-series analysis of transcriptomic changes post-inoculation with Verticillium dahliae.
Main Results:
- Significant transcriptomic changes observed, with 14,310 DEGs in LS8 and 21,739 DEGs in SP.
- Resistant cultivar LS8 showed rapid salicylic acid and specialized metabolite responses, followed by metabolic reprogramming.
- Identified phenylalanine ammonia-lyase genes (StPALs) as highly expressed and associated with enhanced PAL activity and VW resistance.
Conclusions:
- This study provides the first transcriptomic insights into potato VW resistance.
- Identified novel candidate genes and metabolic pathways crucial for developing resistant potato varieties.
