ArticleGenome biology2022
Population-genomic analyses reveal bottlenecks and asymmetric introgression from Persian into iron walnut during domestication.
Article in Genome biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Dissecting the genetic basis of climatic adaptation in wild relatives (Malus baccata) for climate-resilient apple breeding.Journal of integrative plant biology · 2026Article
- East-west divergence and metabolic differentiation in celery domestication.Nature communications · 2026Article
- Two telomere-to-telomere Nelumbo genome assemblies reveal domestication history and empower precision breeding.Nature communications · 2026Article
- Genomic divergence, adaptation, and the genetic basis of quality traits in ancient walnut landraces and wild relatives.Horticulture research · 2026Article
- Haplotype-resolved genome assembly provides insights into the unique floral scent of Rosa rugosa originated in China.Molecular horticulture · 2026Article
- Genetic origins and climate-induced erosion in economically important Asian walnuts.Conservation biology : the journal of the Society for Conservation Biology · 2026Article
- Resolving sampling and population-size biases in domestication genomics supports a South Asian origin of walnuts.Genome biology · 2026Article
- Tracing the Holocene hybrid origin of cultivated walnut in southwestern China.Forestry research · 2026Article
- Integrated chloroplast genomics and whole-genome resequencing reveals demographic history and selection signatures of black walnuts.The plant genome · 2025Article
- Genetic analysis of wild walnuts in Xinjiang based on whole-genome resequencing.Frontiers in plant science · 2025Article
- Complete mitochondrial genome assembly of Juglans regia unveiled its molecular characteristics, genome evolution, and phylogenetic implications.BMC genomics · 2024Article
- Population genetic insights into the conservation of common walnut (Plant diversity · 2024Article
- Genotyping-by-sequencing informs conservation of Andean palms sources of non-timber forest products.Evolutionary applications · 2024Article
- Detection of Ghost Introgression Requires Exploiting Topological and Branch Length Information.Systematic biology · 2024Article
- Distinct ancient structural polymorphisms control heterodichogamy in walnuts and hickories.bioRxiv : the preprint server for biology · 2024Article
- Historical spread routes of wild walnuts in Central Asia shaped by man-made and nature.Frontiers in plant science · 2024Article
- A Multiplex PCR System of Novel Microsatellite Loci for Population Genetic Application in Walnuts.Plants (Basel, Switzerland) · 2023Article
- Genetic imprints of grafting in wild iron walnut populations in southwestern China.BMC plant biology · 2023Article
- Genetic Incompatibilities and Evolutionary Rescue by Wild Relatives Shaped Grain Amaranth Domestication.Molecular biology and evolution · 2023Article
- Unravelling the genetic diversity and population structure of common walnut in the Iranian Plateau.BMC plant biology · 2023Article
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9 authors.
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Abstract
backgroundPersian walnut, Juglans regia, occurs naturally from Greece to western China, while its closest relative, the iron walnut, Juglans sigillata, is endemic in southwest China; both species are cultivated for their nuts and wood. Here, we infer their demographic histories and the time and direction of possible hybridization and introgression between them.
resultsWe use whole-genome resequencing data, different population-genetic approaches (PSMC and GONE), and isolation-with-migration models (IMa3) on individuals from Europe, Iran, Kazakhstan, Pakistan, and China. IMa3 analyses indicate that the two species diverged from each other by 0.85 million years ago, with unidirectional gene flow from eastern J. regia and its ancestor into J. sigillata, including the shell-thickness gene. Within J. regia, a western group, located from Europe to Iran, and an eastern group with individuals from northern China, experienced dramatically declining population sizes about 80 generations ago (roughly 2400 to 4000 years), followed by an expansion at about 40 generations, while J. sigillata had a constant population size from about 100 to 20 generations ago, followed by a rapid decline.
conclusionsBoth J. regia and J. sigillata appear to have suffered sudden population declines during their domestication, suggesting that the bottleneck scenario of plant domestication may well apply in at least some perennial crop species. Introgression from introduced J. regia appears to have played a role in the domestication of J. sigillata.
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