Soraya C. M. Leal‐Bertioli

Supplementary Material for Lamon et al., 2026

Samuele Lamon, Peter M. Bourke, Brian L. Abernathy, João Francisco dos Santos et autres

Double reduction is a rare polyploid-specific segregation pattern in which a single-dosage locus produces a duplex gamete. Although peanut (Arachis hypogaea) mainly shows disomic pairing, its segmental allotetraploid genome can occasionally form multivalents, allowing double reduction to occur. We detected double reduction …

Supplementary Material for Lamon et al., 2026

Samuele Lamon, Peter M. Bourke, Brian L. Abernathy, João Francisco dos Santos et autres

Double reduction is a rare polyploid-specific segregation pattern in which a single-dosage locus produces a duplex gamete. Although peanut (Arachis hypogaea) mainly shows disomic pairing, its segmental allotetraploid genome can occasionally form multivalents, allowing double reduction to occur. We detected double reduction …

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

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

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 …

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Supplementary Material for Lamon et al., 2026

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

Supplementary material for "The Curious Case of Sporadic Nematode Susceptibility in 'Tifguard' Peanut (Arachis hypogaea): Seed Mixture or Genetic Instability?"The peanut cultivar 'Tifguard' carries an Arachis cardenasii-derived segment on chromosome A09 that confers resistance to root-knot nematode (RKN), yet a proportion of …

Supplementary Material for Lamon et al., 2026

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

Supplementary material for "The Curious Case of Sporadic Nematode Susceptibility in 'Tifguard' Peanut (Arachis hypogaea): Seed Mixture or Genetic Instability?"The peanut cultivar 'Tifguard' carries an Arachis cardenasii-derived segment on chromosome A09 that confers resistance to root-knot nematode (RKN), yet a proportion of …

USDA Peanut Germplasm and the International Treaties

Shyam P. Tallury, Soraya C. M. Leal‐Bertioli, David Bertioli, Nicolas Stigura et autres

The USDA peanut germplasm collection was assembled over eight decades and is securely managed at the National Plant Germplasm System (NPGS) genebank in Griffin, GA, with a back-up collection at the National Laboratory for Genetic Resources Preservation (NLGRP) in Fort Collins, CO. …

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Reviving Vavilov’s vision: The tragedy of biodiversity governance and principles for reform

David J. Bertioli, Soraya C. M. Leal‐Bertioli, Tarikua Erda, Charles E. Simpson et autres

This perspective addresses two of humanity's greatest challenges: feeding a growing population and conserving biodiversity. We begin by examining the legacy of Nikolai Vavilov, who pioneered the improvement of crops such as wheat and beans by hybridizing them with their wild relatives. …

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Oxidative stress in wild‐derived and cultivated peanut genotypes caused by heat stress at flowering

Kelvin Jimmy Awori, Soraya C. M. Leal‐Bertioli, David J. Bertioli, Viktor Tishchenko et autres

Abstract Peanut ( Arachis hypogaea L.) is a globally important crop; however, its productivity is increasingly threatened by heat stress, exacerbated by global warming. Developing heat‐tolerant peanuts is crucial for sustainable production amidst rising temperatures. Unlike commercial cultivars, wild‐derived peanuts possess broader …

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Deep Sequence Characterization of Tomato Spotted Wilt Virus in Cultivated and Wild-Derived Allotetraploid Peanuts in Georgia, U.S.A.

Namrata Maharjan, Simone G. Ribeiro, David J. Bertioli, Soraya C. M. Leal‐Bertioli

Tomato spotted wilt virus (TSWV) is a globally important pathogen of peanut, characterized by rapid evolution, broad host range, and capacity to overcome resistance. In this study, we performed deep sequencing of TSWV isolates from two peanut cultivars (GA-06G and Bailey II) …

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Elite agronomic performance in cultivated peanut ( Arachis hypogaea ) with strong resistance to root‐knot nematode ( Meloidogyne spp.) introgressed from Arachis stenosperma

Eustace Barnes, Soraya C. M. Leal‐Bertioli, Carolina Ballén‐Taborda, Patricia Timper et autres

Abstract Root‐knot nematode (RKN) is a major pathogen of cultivated peanut, Arachis hypogaea , that can incur losses of >50% yield. Currently, one source of strong RKN resistance has been introduced into cultivated peanut through introgression from the wild peanut relative A. …

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Mapping QTLs for early leaf spot resistance and yield component traits using an interspecific AB-QTL population in peanut

Aissatou Sambou, Joël Romaric Nguepjop, Hodo-Abalo Tossim, Mohmoudane M. Seye et autres

Early leaf spot (ELS), caused by Passalora personata (syn. Cercospora arachidicola), is a highly damaging peanut disease worldwide. While there are limited sources of resistance in cultivated peanut cultivars, wild relatives carry alleles for strong resistance, making them a valuable strategic resource …

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Exploiting Arachis Wild Relatives for Increasing Genetic Diversity and Resilience in Groundnut

Deekshitha Bomireddy, Vinay Kumar Sharma, Soraya C. M. Leal‐Bertioli, Daniel Foncéka et autres

Cultivated groundnut is an important self-pollinating tetraploid oilseed and cash crop adversely affected by biotic and abiotic stresses leading to reduced yield. Factors such as evolution, domestication, and replacement of landraces by modern cultivars have narrowed down the genetic base in groundnut …