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Article

The curious case of sporadic nematode susceptibility in "Tifguard" peanut (Arachis hypogaea): seed mixture or genetic instability?

G3 (Bethesda, Md.) - 2 Sept 2026

Lamon Samuele, Abernathy Brian L, Leal-Bertioli Soraya C M, Bertioli David J

Abstract excerpt

The Runner-type peanut (Arachis hypogaea L.) cultivar "Tifguard" carries an introgressed chromosomal segment on chromosome A09 from A. cardenasii that confers resistance to root-knot nematode (RKN). Despite this, a proportion of "Tifguard" plants show RKN symptoms, which could plausibly be attributed to seed mixture or outcrossing. However, recent work has shown that cultivated peanut exhibits surprisingly...

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Topics

Arachis
Animals
Plant Diseases
Seeds
Polymorphism, Single Nucleotide
Genomic Instability

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Identifiers

PMID: 42417136
DOI: 10.1093/g3journal/jkag175
PMCID: PMC13535424

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