Natural resources resistance to tomato spotted wilt virus (Tswv) in tomato (solanum lycopersicum)

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Abstract

Tomato spotted wilt virus (TSWV) is one of the most destructive diseases affecting tomato (Solanum lycopersicum) cultivation and production worldwide. As defenses against TSWV, natural resistance genes have been identified in tomato, including Sw-1a, Sw-1b, sw-2, sw-3, sw-4, Sw-5, Sw-6, and Sw-7. However, only Sw-5 exhibits a high level of resistance to the TSWV. Thus, it has been cloned and widely used in the breeding of tomato with resistance to the disease. Due to the global spread of TSWV, resistance induced by Sw-5 decreases over time and can be overcome or broken by a high concentration of TSWV. How to utilize other resistance genes and identify novel resistance resources are key approaches for breeding tomato with resistance to TSWV. In this review, the characteristics of natural resistance genes, natural resistance resources, molecular markers for assisted selection, and methods for evaluating resistance to TSWV are summarized. The aim is to provide a theoretical basis for identifying, utilizing resistance genes, and developing tomato varieties that are resistant to TSWV.

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Qi, S., Zhang, S., Islam, M. M., El-Sappah, A. H., Zhang, F., & Liang, Y. (2021, October 1). Natural resources resistance to tomato spotted wilt virus (Tswv) in tomato (solanum lycopersicum). International Journal of Molecular Sciences. MDPI. https://doi.org/10.3390/ijms222010978

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