AI Article Synopsis
- Tomato spotted wilt virus (TSWV) is a major threat to tomato production, and researchers developed a tomato inbred line, YNAU335, that shows immunity to this virus.
- Genetic analysis revealed that the immunity is controlled by a dominant gene located in a specific region on chromosome 9, with a particular gene responsible for flavonoid synthesis being a strong candidate for resistance.
- By altering the levels of flavonoids through gene manipulation, researchers found that increased flavonoid content enhances tomatoes' resistance to TSWV, providing valuable insights into the mechanisms of resistance.
Article Abstract
Unlabelled: Tomato spotted wilt virus (TSWV) poses a serious threat to tomato () production. In this study, tomato inbred line YNAU335 was developed without the locus, which confers resistance or immunity to TSWV (absence of infection). Genetic analysis demonstrated that immunity to TSWV was controlled by a dominant nuclear gene. The candidate genes were mapped into a 20-kb region in the terminal of the long arm of chromosome 9 using bulk segregant analysis and linkage analysis. In this candidate region, a chalcone synthase-encoding gene () was identified as a strong candidate gene for TSWV resistance. Silencing reduced flavonoid synthesis, and overexpression increased flavonoid content. The increase in flavonoids improved TSWV resistance in tomato. These findings indicate that is indeed involved in the regulation of flavonoid synthesis and plays a significant role in TSWV resistance of YNAU335. This could provide new insights and lay the foundation for analyzing TSWV resistance mechanisms.
Supplementary Information: The online version contains supplementary material available at 10.1007/s11032-022-01325-5.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10248591 | PMC |
| http://dx.doi.org/10.1007/s11032-022-01325-5 | DOI Listing |
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