Genetics of Host Resistance to Viruses and of Virulence

Fraser, R. S. S.

doi:10.1007/978-94-009-5145-7_4

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…Decades earlier, similar outcomes were observed under laboratory conditions using ToMV mutants able to overcome Tm-1 resistance. These mutants were less fit when inoculated into systemic (nonresistant) tomato lines based on reduced virus accumulation and milder symptom phenotypes (23). But what might occur in a natural ecosystem?…”

Section: The Past Is Present: An Ongoing Need For R-genesmentioning

confidence: 99%

The Past Is Present: Coevolution of Viruses and Host Resistance Within Geographic Centers of Plant Diversity

Scholthof

2023

Annu. Rev. Phytopathol.

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Understanding the coevolutionary history of plants, pathogens, and disease resistance is vital for plant pathology. Here, I review Francis O. Holmes's work with tobacco mosaic virus (TMV) framed by the foundational work of Nikolai Vavilov on the geographic centers of origin of plants and crop wild relatives (CWRs) and T. Harper Goodspeed's taxonomy of the genus Nicotiana. Holmes developed a hypothesis that the origin of host resistance to viruses was due to coevolution of both at a geographic center. In the 1950s, Holmes proved that genetic resistance to TMV, especially dominant R-genes, was centered in South America for Nicotiana and other solanaceous plants, including Capsicum, potato, and tomato. One seeming exception was eggplant ( Solanum melongena). Not until the acceptance of plate tectonics in the 1960s and recent advances in evolutionary taxonomy did it become evident that northeast Africa was the home of eggplant CWRs, far from Holmes's geographic center for TMV– R-gene coevolution. Unbeknownst to most plant pathologists, Holmes's ideas predated those of H.H. Flor, including experimental proof of the gene-for-gene interaction, identification of R-genes, and deployment of dominant host genes to protect crop plants from virus-associated yield losses. Expected final online publication date for the Annual Review of Phytopathology, Volume 61 is September 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: The Past Is Present: An Ongoing Need For R-genesmentioning

confidence: 99%

The Past Is Present: Coevolution of Viruses and Host Resistance Within Geographic Centers of Plant Diversity

Scholthof

2023

Annu. Rev. Phytopathol.

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“…The existence of gene-for-gene interactions has been demonstrated or implicated for many hostpathogen interactions including those with fungi, bacteria (Crute, 1985) and viruses (Fraser, 1985) and its occurrence has had profound consequences for breeding for disease resistance . These have included many examples where initially resistant cultivars have become susceptible .…”

Section: Selecting For Resistancementioning

confidence: 99%

Past, present and future opportunities in breeding for disease resistance, with examples from wheat

Johnson

1992

Euphytica

108

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“…Some more elaborate versions of the models have been considered in earlier reviews(35)(36)(37).Recognition leading to susceptibility and virus multiplication is a straightforward expression of the Bald & Tinsley (2-4) model. The critical steps are recognition events between virus-and host-coded molecules, signal transduction, and occurrence or induction of response.…”

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confidence: 99%