Recent trends in genetics studies and molecular breeding of potato

Marhadour, Sylvie; Prodhomme, Charlotte

doi:10.1016/b978-0-12-822925-5.00021-9

Cited by 2 publications

(1 citation statement)

References 322 publications

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“…Linkage mapping with DNA-based markers has led to the map-based cloning and characterization of 56 resistance genes, thus making a significant contribution to the knowledge of the structure and function of plant genes for pathogen resistance. Based on the sequences of cloned resistance genes or markers tightly linked with major effect resistance loci, diagnostic markers have been developed, which have enriched the breeder’s toolbox for the selection of resistant cultivars ( Tiwari et al, 2022 ; Marhadour and Prodhomme, 2023 ).…”

Section: Discussionmentioning

confidence: 99%

A physical map of traits of agronomic importance based on potato and tomato genome sequences

Gebhardt¹

2023

Front. Genet.

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Potato, tomato, pepper, and eggplant are worldwide important crop and vegetable species of the Solanaceae family. Molecular linkage maps of these plants have been constructed and used to map qualitative and quantitative traits of agronomic importance. This research has been undertaken with the vision to identify the molecular basis of agronomic characters on the one hand, and on the other hand, to assist the selection of improved varieties in breeding programs by providing DNA-based markers that are diagnostic for specific agronomic characters. Since 2011, whole genome sequences of tomato and potato became available in public databases. They were used to combine the results of several hundred mapping and map-based cloning studies of phenotypic characters between 1988 and 2022 in physical maps of the twelve tomato and potato chromosomes. The traits evaluated were qualitative and quantitative resistance to pathogenic oomycetes, fungi, bacteria, viruses, nematodes, and insects. Furthermore, quantitative trait loci for yield and sugar content of tomato fruits and potato tubers and maturity or earliness were physically mapped. Cloned genes for pathogen resistance, a few genes underlying quantitative trait loci for yield, sugar content, and maturity, and several hundred candidate genes for these traits were included in the physical maps. The comparison between the physical chromosome maps revealed, in addition to known intrachromosomal inversions, several additional inversions and translocations between the otherwise highly collinear tomato and potato genomes. The integration of the positional information from independent mapping studies revealed the colocalization of qualitative and quantitative loci for resistance to different types of pathogens, called resistance hotspots, suggesting a similar molecular basis. Synteny between potato and tomato with respect to genomic positions of quantitative trait loci was frequently observed, indicating eventual similarity between the underlying genes.

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Section: Discussionmentioning

confidence: 99%

A physical map of traits of agronomic importance based on potato and tomato genome sequences

Gebhardt¹

2023

Front. Genet.

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A genomic dataset integrating genotyping-by-sequencing, SolCAP array and PCR marker data on tetraploid potato advanced breeding lines

Leuenberger,

Sharma,

McLean

et al. 2024

Front. Plant Sci.

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Developing new potato varieties with enhanced resistance to diseases and pests is essential for ensuring food security and promoting sustainable agricultural production. INRAE has been creating potato advanced breeding lines for over 50 years by crossing different wild potato species with Solanum tuberosum to improve various traits, such as resistance to major pests and diseases or quality traits. These breeding lines have been distributed to French potato breeders, contributing significantly to the development of more resilient potato varieties. However, further research progress is needed to breed durable multi-resistant potato varieties adapted to low-input (mainly pesticides and fertilizer) agriculture. Molecular markers can effectively assist in pyramiding multiple loci for resistance (Pilet-Nayel et al., 2017) to major diseases and pests of potato, such as late blight disease, cyst nematodes, and viruses, while preserving the agronomic and quality values of varieties.The development of genomics and the evolution of sequencing methods in the last decade have facilitated the identification of a large number of SNPs (Single Nucleotide polymorphism) from sequencing data. SNPs discovered using EST (Expressed Sequence Tag) or transcriptome data from six potato varieties were used to construct the widely used Infinium 8K SNP SolCAP array (Hamilton et al., 2011; Felcher et al., 2012). However, this genotyping method may display ascertainment bias especially for germplasm containing Frontiers in Plant Science frontiersin.org 01

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Recent trends in genetics studies and molecular breeding of potato

Cited by 2 publications

References 322 publications

A physical map of traits of agronomic importance based on potato and tomato genome sequences

A physical map of traits of agronomic importance based on potato and tomato genome sequences

A genomic dataset integrating genotyping-by-sequencing, SolCAP array and PCR marker data on tetraploid potato advanced breeding lines

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