AI Article Synopsis
- A reference genome for a medicinal plant affected by root rot was created, revealing 66 candidate disease-resistance genes for breeding purposes.
- The study analyzed gene expression in resistant and susceptible plant genotypes during infection, showing that defense-related genes were highly active in the resistant plants.
- Increased levels of salicylic acid and jasmonic acid were noted in resistant plants, with a key gene identified that plays a central role in their defense responses.
Article Abstract
( (Burk.) F.H. Chen), a plant of high medicinal value, is severely affected by root rot during cultivation. Here, we generated a reference genome of , with a contig N50 size of 241.268 kb, and identified 66 disease-resistance genes (R-genes) as candidate genes for breeding disease-resistant varieties. We then investigated the molecular mechanism underlying the responses of resistant and susceptible genotypes to infection at six time points by RNA-seq. Functional analysis of the genes differentially expressed between the two genotypes indicated that genes involved in the defense response biological process like hormone transduction and plant-pathogen interaction are continuously and highly expressed in resistant genotype during infection. Moreover, salicylic acid and jasmonic acid levels gradually increased during infection in the resistant genotype. Coexpression analysis showed that acts as a hub gene in the defense response of the resistant genotype. Finally, transiently overexpressing increased salicylic acid levels in leaves. Our findings provide a theoretical basis for studying root rot resistance in .
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8714957 | PMC |
| http://dx.doi.org/10.3389/fpls.2021.775019 | DOI Listing |
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