Grass pea natural variation reveals oligogenic resistance to Fusarium oxysporum f. sp. pisi.

Publication Overview
TitleGrass pea natural variation reveals oligogenic resistance to Fusarium oxysporum f. sp. pisi.
AuthorsSampaio AM, Alves ML, Pereira P, Valiollahi E, Santos C, Šatović Z, Rubiales D, Araújo SS, van Eeuwijk F, Vaz Patto MC
TypeJournal Article
Journal NameThe plant genome
Year2021
Page(s)e20154
CitationSampaio AM, Alves ML, Pereira P, Valiollahi E, Santos C, Šatović Z, Rubiales D, Araújo SS, van Eeuwijk F, Vaz Patto MC. Grass pea natural variation reveals oligogenic resistance to Fusarium oxysporum f. sp. pisi.. The plant genome. 2021 Oct 07; e20154.

Abstract

Grass pea (Lathyrus sativus L.) is an annual legume species, phylogenetically close to pea (Pisum sativum L.), that may be infected by Fusarium oxysporum f. sp. pisi (Fop), the causal agent of fusarium wilt in peas with vast worldwide yield losses. A range of responses varying from high resistance to susceptibility to this pathogen has been reported in grass pea germplasm. Nevertheless, the genetic basis of that diversity of responses is still unknown, hampering its breeding exploitation. To identify genomic regions controlling grass pea resistance to fusarium wilt, a genome-wide association study approach was applied on a grass pea worldwide collection of accessions inoculated with Fop race 2. Disease responses were scored in this collection that was also subjected to high-throughput based single nucleotide polymorphisms (SNP) screening through genotyping-by-sequencing. A total of 5,651 high-quality SNPs were considered for association mapping analysis, performed using mixed linear models accounting for population structure. Because of the absence of a fully assembled grass pea reference genome, SNP markers' genomic positions were retrieved from the pea's reference genome v1a. In total, 17 genomic regions were associated with three fusarium wilt response traits in grass pea, anticipating an oligogenic control. Seven of these regions were located on pea chromosomes 1, 6, and 7. The candidate genes underlying these regions were putatively involved in secondary and amino acid metabolism, RNA (regulation of transcription), transport, and development. This study revealed important fusarium wilt resistance favorable grass pea SNP alleles, allowing the development of molecular tools for precision disease resistance breeding.

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Pages

Properties
Additional details for this publication include:
Property NameValue
Publication ModelPrint-Electronic
ISSN1940-3372
eISSN1940-3372
Publication Date2021 Oct 07
Journal AbbreviationPlant Genome
DOI10.1002/tpg2.20154
Elocation10.1002/tpg2.20154
Copyright© 2021 The Authors. The Plant Genome published by Wiley Periodicals LLC on behalf of Crop Science Society of America.
LanguageEnglish
Language Abbreng
Publication TypeJournal Article
Journal CountryUnited States
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DatabaseAccession
PMID: PubMedPMID:34617677