Claim · model-written summary
Black walnut population size fluctuated with Quaternary glacial and interglacial periods.
- Taxon
- black walnut
Juglans nigrae0 - Outcome
- black walnut population sizee0
- Qualifier
- alternation of glacial and interglacial periodse0
- Setting
- Quaternary climatic oscillationse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quaternary climatic oscillations also exerted a profound influence on black walnut population size, which exhibited sensitive fluctuations in response to alternation of glacial and interglacial periods.”
Title
Hang Ye; Hengzhao Liu; Huijuan Zhou; et al. The Plant Genome 2025. doi:10.1002/tpg2.70172
Other claims from this paper (9)
- Method / resource The study constructed a high-density map of genomic variation across 108 Rhysocaryon accessions.
- Observation The 108 Rhysocaryon accessions were delimited into four groups despite introgression.
- Observation Black walnuts may have diversified about 28.74 million years ago in the late Oligocene.
- Observation The clade containing Juglans hindsii and Juglans californica diverged earliest.
- Observation Juglans microcarpa may be a hybrid descendant of Juglans nigra and J. hindsii.
- Association Ancestral black walnut populations kept diverging as climate oscillated, preceding South American colonization.
- Association J. nigra contained highly divergent genomic regions associated with development, reproduction, disease resistance and stress tolerance.
- Observation WRKY41 was identified as a potential driver of J. nigra adaptation.
- Observation ERF012 was identified as a potential driver of J. nigra adaptation.