On the Value of Wild Solanum Species for Improved Crop Disease Resistance: Resistances to Nematodes and Viruses

Bradeen, James M.

doi:10.1007/978-3-030-30343-3_5

Cited by 2 publications

(1 citation statement)

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“…One source of resistant material is the wild relatives of cultivated crops, which are usually well adapted to changing environments and pathogen attack, making them a rich source of pathogen resistance genes (Bradeen, 2021). For example, Mi1-2 is an R gene that confers resistance in tomato to three species of RKN (M. incognita, M. javanica, and M. arenaria) (Milligan et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Appraising the natural root-knot nematode resistance inSolanum sisymbriifolium, a wild relative of potato

Ko,

Caplan,

Kuhl

et al. 2024

Preprint

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SummaryRoot-knot nematodes (RKNs) are a major pest of Solanum and other economically important crops worldwide. Two species of RKNs (Meloidogyne chitwoodiandMeloidogyne hapla) are persistent threats to potato growers of the United States. These RKNs infect potato roots and tubers, causing tuber blemishes that decrease potato market value and significantly impact the profitability of the infected potato crop. Due to environmental, health, and economic concerns, the longstanding control methods of using soil fumigants and post-plant nematicides are not favored by producers and consumers. Therefore, deploying RKN resistant cultivars is an alternative method to control RKN damage. However, there is no genetic resistance to RKN in commercially-available, cultivated potatoes. Therefore, the critical first step to breed a RKN resistant plant is to identify a genetic source of RKN resistance. A wildSolanumspecies,Solanum sisymbriifolium,also known as litchi tomato, can effectively control several agronomically important species of plant parasitic nematodes.Solanum sisymbriifoliumis completely resistant to RKNs; only a few nematodes enter the plant roots and those that do, cannot establish a feeding site. To understand its ability to prevent RKNs from forming feeding sites, we performed transcriptomic analysis ofS. sisymbriifoliumroots inoculated with the Northern root knot nematode,M. hapla. Combined with the annotation of the recently publishedS. sisymbriifoliumgenome assembly, we discovered 13 differentially expressed resistance-related genes upon nematode inoculation. By transforming potatoes with candidate resistance genes fromS. sisymbriifolium, we aim to understand the strong genetic resistance inS. sisymbriifoliumand whether those genes are necessary and sufficient to drive resistance to RKN in potatoes. This information will help us understand gene functions and help us generate RKN resistance in relevantSolanumcrops.

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Section: Introductionmentioning

confidence: 99%

Appraising the natural root-knot nematode resistance inSolanum sisymbriifolium, a wild relative of potato

Ko,

Caplan,

Kuhl

et al. 2024

Preprint

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De Novo Domestication Concept for Potato Germplasm Enhancement

et al. 2022

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Wild potato germplasm serves as a natural pool of agronomically valuable traits for potato breeding, such as resistance to pathogens and abiotic stresses, quality, and consumer-oriented traits. The introgression of these traits into cultivated potato is hampered by the different kinds of incompatibility and linkages between desirable and undesirable features in hybrid progeny. The trait donor improvement via correction of negative characteristics prior to hybridization to domestic potato can be a solution to the linkage drag problem. The de novo domestication concept for developing new crops using gene editing technologies was previously proposed and performed for tomato and physalis. In this review, we collected information about donor properties of different wild potato species and developed a strategy for potato germplasm enhancement using the de novo domestication approach. The possible modifications of several candidate genes responsible for undesirable traits in wild potato, including high steroidal glycoalkaloid content, self-incompatibility, tuberization under short day conditions, and long stolons are proposed. The current challenges and future prospects of implementing the de novo domestication strategy for potato are discussed.

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On the Value of Wild Solanum Species for Improved Crop Disease Resistance: Resistances to Nematodes and Viruses

Cited by 2 publications

References 131 publications

Appraising the natural root-knot nematode resistance inSolanum sisymbriifolium, a wild relative of potato

Appraising the natural root-knot nematode resistance inSolanum sisymbriifolium, a wild relative of potato

De Novo Domestication Concept for Potato Germplasm Enhancement

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