Breeding for Resistance to Fusarium Wilt of Tomato: A Review
For over a century, breeders have worked to develop tomato (<i>Solanum lycopersicum</i>) cultivars with resistance to Fusarium wilt (<i>Fol</i>) caused by the soilborne fungus <i>Fusarium oxysporum</i> f. sp. <i>lycopersici</i>. Host resistance is the...
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| Main Authors: | , , , |
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| Format: | article |
| Language: | EN |
| Published: |
MDPI AG
2021
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| Subjects: | |
| Online Access: | https://doaj.org/article/efa1abd1c0274e45b4ae782ea40035f3 |
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| Summary: | For over a century, breeders have worked to develop tomato (<i>Solanum lycopersicum</i>) cultivars with resistance to Fusarium wilt (<i>Fol</i>) caused by the soilborne fungus <i>Fusarium oxysporum</i> f. sp. <i>lycopersici</i>. Host resistance is the most effective strategy for the management of this disease. For each of the three <i>Fol</i> races, resistance has been introgressed from wild tomato species, predominately in the form of R genes. The <i>I, I-2, I-3</i>, and <i>I-7</i> R genes have each been identified, as well as the corresponding Avr effectors in the fungus with the exception of <i>Avr7</i>. The mechanisms by which the R gene protein products recognize these effectors, however, has not been elucidated. Extensive genetic mapping, gene cloning, and genome sequencing efforts support the development of tightly-linked molecular markers, which greatly expedite tomato breeding and the development of elite, <i>Fol</i> resistant cultivars. These resources also provide important tools for pyramiding resistance genes and should support the durability of host resistance. |
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