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dc.contributor.authorXu, Lin-Lin
dc.contributor.authorYu, Rui-Min
dc.contributor.authorLin, Xin-Rui
dc.contributor.authorZhang, Bo-Wen
dc.contributor.authorLi, Nan
dc.contributor.authorLin, Kui
dc.contributor.authorZhang, Da-Yong
dc.contributor.authorBai, Wei-Ning
dc.date.accessioned2021-10-11T13:14:48Z
dc.date.available2021-10-11T13:14:48Z
dc.date.issued2021-07-13
dc.identifier.citationNew Phytol. 2021 Oct;232(1):388-403. doi: 10.1111/nph.17564. Epub 2021 Jul 13.en_US
dc.identifier.pmid34143496
dc.identifier.doi10.1111/nph.17564
dc.identifier.urihttp://hdl.handle.net/10033/623069
dc.description.abstractopological cytonuclear discordance is commonly observed in plant phylogenetic and phylogeographic studies, yet few studies have attempted to detect two other forms of cytonuclear discordance (branch length and geographical) and to uncover the causes of the discordance. We used the whole nuclear and chloroplast genome data from 80 individual Asian butternuts to reveal the pattern and processes of cytonuclear discordance. Our findings indicate that the chloroplast genome had substantially deeper divergence (branch-length discordance) and a steeper cline in the contact zone (geographic discordance) compared with the nuclear genome. After various hypothesis have been tested, the results suggest that incomplete lineage sorting, positive selection and cytonuclear incompatibility are probably insufficient to explain this pattern. However, isolation-by-distance analysis and gene flow estimation point to a much higher level of gene flow by pollen compared with by seeds, which may have slowed down lineage divergence and mediated wider contact for nuclear genome compared with the chloroplast genome. Altogether, this study highlights a critical role of sex-biased dispersal in causing discordance between the nuclear and plastid genome of Asian butternuts. Given its ubiquity among plants, asymmetric gene flow should be given a high priority in future studies of cytonuclear discordance.en_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectbranch-length discordanceen_US
dc.subjectgene flowen_US
dc.subjectgeographic discordanceen_US
dc.subjectintrogressionen_US
dc.subjectwhole-genome resequencingen_US
dc.titleDifferent rates of pollen and seed gene flow cause branch-length and geographic cytonuclear discordance within Asian butternuts.en_US
dc.typeArticleen_US
dc.identifier.eissn1469-8137
dc.contributor.departmentCiiM, Zentrum für individualisierte Infektionsmedizin, Feodor-Lynen-Str.7, 30625 Hannover.en_US
dc.identifier.journalThe New phytologisten_US
dc.source.volume232
dc.source.issue1
dc.source.beginpage388
dc.source.endpage403
refterms.dateFOA2021-10-11T13:14:49Z
dc.source.journaltitleThe New phytologist
dc.source.countryEngland


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Except where otherwise noted, this item's license is described as Attribution 4.0 International