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Haplotype graph analysis of PdR1 uncovers resistance diversity to Pierce's disease in Vitis arizonica and its hybrids.

G3 (Bethesda, Md.) - 6 Jul 2026

Massonnet Mélanie, Zaccheo Mirella, Cochetel Noé, Figueroa-Balderas Rosa, Riaz Summaira, Cantu Dario

Abstract excerpt

Previous genetic mapping studies indicate that multiple haplotypes of the Pierce's disease (PD) Resistance 1 (PdR1) locus occur in Vitis arizonica and its hybrids. To characterize sequence diversity at this locus, we assembled chromosome-scale diploid genomes for four PD-resistant (PD-R) accessions: b43-17 (PdR1a+/PdR1b+), the backcross 07744-094 (PdR1c+/PdR1-), b46-43 (PdR1e+/PdR1f+), and b42-26 (PdR1-/PdR1-),...

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Identifiers

PMID: 42060849
DOI: 10.1093/g3journal/jkag115
PMCID: PMC13334176

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