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European hazelnut (Corylus avellana L.) is an important tree nut crop. Hazelnut production in North America is currently limited in scalability due to Anisogramma anomala , a fungal pathogen that causes Eastern Filbert Blight (EFB) disease in hazelnut. Successful deployment of EFB resistant cultivars has been limited to the state of Oregon, where the breeding program at Oregon State University (OSU) has released cultivars with a dominant allele at a single resistance locus identified by classical breeding, linkage mapping, and molecular markers. C. avellana cultivar "Jefferson" is resistant to the predominant EFB biotype in Oregon and has been selected by the OSU breeding program as a model for hazelnut genetic and genomic research. Here, we present a near complete, haplotype-resolved chromosome-level hazelnut genome assembly for " Jefferson". This new assembly is a significant improvement over a previously published genome draft. Analysis of genomic regions linked to EFB resistance and self-incompatibility confirmed haplotype splitting and identified new gene candidates that are essential for downstream molecular marker development, thereby facilitating breeding efforts. [ABSTRACT FROM AUTHOR]

Fusarium wilt [ Fusarium oxysporum f. sp. vasinfectum (FOV)] in cotton is a widespread soilborne pathogen that causes vascular plant disease and is responsible for substantial crop losses worldwide. FOV race 1 (FOV1) is well established across almost all cotton production regions, especially in the USA. Herein, we report a high-quality whole-genome sequence, assembly, and gene annotation of a FOV1 isolate from California., Competing Interests: The authors declare no conflict of interest.