Four chromosome scale genomes and a pan-genome annotation to accelerate pecan tree breeding
Journal Article
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· Nature Communications
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- HudsonAlpha Institute for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center; OSTI
- Texas A & M Univ., College Station, TX (United States). Dept. of Horticultural Science
- Univ. of Georgia, Athens, GA (United States). Inst. of Plant Breeding, Genetics & Genomics
- HudsonAlpha Institute for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center
- Noble Research Institute, Ardmore, OK (United States)
- USDA Southeastern Fruit and Tree Nut Research Lab.y, Byron, GA (United States)
- USDOE Joint Genome Institute (JGI), Berkeley, CA (United States)
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Entomology, Plant Pathology and Weed Science
- USDA-ARS Food Processing and Sensory Quality Research, New Orleans, LA (United States)
- USDA-ARS Plains Area Administrative Office, College Station, TX (United States)
- Noble Research Institute, Ardmore, OK (United States)
- USDA Pecan Breeding and Genetics, College Station, TX (United States)
- USDA-ARS Food Processing and Sensory Quality Research, New Orleans, LA (United States)
- Univ. of Arizona, Tucson, AZ (United States). Arizona Genomics Inst.
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Computer Science
- New Mexico State Univ., Las Cruces, NM (United States). Plant and Environmental Sciences
- Univ. of Georgia-Tifton Campus, Tifton, GA (United States). Dept. of Horticulture
- USDA Pecan Breeding and Genetics, College Station, TX (United States)
- HudsonAlpha Institute for Biotechnology, Huntsville, AL (United States). Genome Sequencing Center; USDOE Joint Genome Institute (JGI), Berkeley, CA (United States)
Genome-enabled biotechnologies have the potential to accelerate breeding efforts in long-lived perennial crop species. Despite the transformative potential of molecular tools in pecan and other outcrossing tree species, highly heterozygous genomes, significant presence–absence gene content variation, and histories of interspecific hybridization have constrained breeding efforts. To overcome these challenges, here, we present diploid genome assemblies and annotations of four outbred pecan genotypes, including a PacBio HiFi chromosome-scale assembly of both haplotypes of the ‘Pawnee’ cultivar. Comparative analysis and pan-genome integration reveal substantial and likely adaptive interspecific genomic introgressions, including an over-retained haplotype introgressed from bitternut hickory into pecan breeding pedigrees. Further, by leveraging our pan-genome presence–absence and functional annotation database among genomes and within the two outbred haplotypes of the ‘Lakota’ genome, we identify candidate genes for pest and pathogen resistance. Combined, these analyses and resources highlight significant progress towards functional and quantitative genomics in highly diverse and outbred crops.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231; SC0014664
- OSTI ID:
- 1816167
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 12; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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