ArticleMolecular biology and evolution2022
Dead-End Hybridization in Walnut Trees Revealed by Large-Scale Genomic Sequence Data.
Article in Molecular biology and evolution, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
22 citing papers in PubMed.
- Population history rather than tree age contributes to the evolutionary importance of ancient trees in an endangered conifer.Nature plants · 2026Article
- Local adaptation sustains genetic differentiation between two varieties of Chinese walnut (Plant diversity · 2026Article
- Genomic consequences of residual recombination in a hybrid apomictic hickory complex.Nature communications · 2026Article
- Resolving sampling and population-size biases in domestication genomics supports a South Asian origin of walnuts.Genome biology · 2026Article
- Distinct haplotypes and reversed dominance at a single-gene balanced polymorphism controlling heterodichogamy in two genera of wingnuts.Current biology : CB · 2025Article
- Genetic Mechanisms and Adaptive Benefits of Anthocyanin Red Stigmas in a Wind-Pollinated Tree.Molecular biology and evolution · 2025Article
- Integrating evolutionary genomics of forest trees to inform future tree breeding amid rapid climate change.Plant communications · 2024Review
- Demography-driven and adaptive introgression in a hybrid zone of the Armeria syngameon.Molecular ecology · 2024Article
- Uncovering ghost introgression through genomic analysis of a distinct eastern Asian hickory species.The Plant journal : for cell and molecular biology · 2024Article
- Distinct ancient structural polymorphisms control heterodichogamy in walnuts and hickories.bioRxiv : the preprint server for biology · 2024Article
- Phylogeography ofForestry research · 2024Article
- A Multiplex PCR System of Novel Microsatellite Loci for Population Genetic Application in Walnuts.Plants (Basel, Switzerland) · 2023Article
- Adaptive divergence and genetic vulnerability of relict species under climate change: a case study of Pterocarya macroptera.Annals of botany · 2023Article
- No wonder, it is a hybrid. Natural hybridization betweenEcology and evolution · 2023Article
- Genomic insights into biased allele loss and increased gene numbers after genome duplication in autotetraploid Cyclocarya paliurus.BMC biology · 2023Article
- Genomic Analysis of Plastid-Nuclear Interactions and Differential Evolution Rates in Coevolved Genes across Juglandaceae Species.Genome biology and evolution · 2023Article
- Genome structure-based Juglandaceae phylogenies contradict alignment-based phylogenies and substitution rates vary with DNA repair genes.Nature communications · 2023Article
- Telomere-to-telomere and haplotype-resolved genome assembly of the Chinese cork oak (Frontiers in plant science · 2023Article
- Characteristics and potential functional effects of long insertions in Asian butternuts.BMC genomics · 2022Article
- Population-genomic analyses reveal bottlenecks and asymmetric introgression from Persian into iron walnut during domestication.Genome biology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although hybridization plays a large role in speciation, some unknown fraction of hybrid individuals never reproduces, instead remaining as genetic dead-ends. We investigated a morphologically distinct and culturally important Chinese walnut, Juglans hopeiensis, suspected to have arisen from hybridization of Persian walnut (J. regia) with Asian butternuts (J. cathayensis, J. mandshurica, and hybrids between J. cathayensis and J. mandshurica). Based on 151 whole-genome sequences of the relevant taxa, we discovered that all J. hopeiensis individuals are first-generation hybrids, with the time for the onset of gene flow estimated as 370,000 years, implying both strong postzygotic barriers and the presence of J. regia in China by that time. Six inversion regions enriched for genes associated with pollen germination and pollen tube growth may be involved in the postzygotic barriers that prevent sexual reproduction in the hybrids. Despite its long-recurrent origination and distinct traits, J. hopeiensis does not appear on the way to speciation.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.