Genomic diversifications of five Gossypium allopolyploid species and their impact on cotton improvement Chen, Z. Jeffrey Sreedasyam, Avinash Wendel, Jonathan Ando, Atsumi Song, Qingxin De Santiago, Luis Hulse-Kemp, Amanda Simpson, Sheron Scheffler, Brian Grover, Corrinne Hu, Guanjing Conover, Justin Carlson, Joseph Shu, Shengqiang Wendel, Jonathan Schmutz, Jeremy
dc.contributor.department Ecology, Evolution and Organismal Biology 2020-04-23T17:16:01.000 2020-06-30T02:18:41Z 2020-06-30T02:18:41Z 2020-01-01
dc.description.abstract <p>Polyploidy is an evolutionary innovation for many animals and all flowering plants, but its impact on selection and domestication remains elusive. Here we analyze genome evolution and diversification for all five allopolyploid cotton species, including economically important Upland and Pima cottons. Although these polyploid genomes are conserved in gene content and synteny, they have diversified by subgenomic transposon exchanges that equilibrate genome size, evolutionary rate heterogeneities and positive selection between homoeologs within and among lineages. These differential evolutionary trajectories are accompanied by gene-family diversification and homoeolog expression divergence among polyploid lineages. Selection and domestication drive parallel gene expression similarities in fibers of two cultivated cottons, involving coexpression networks and <em>N</em>6-methyladenosine RNA modifications. Furthermore, polyploidy induces recombination suppression, which correlates with altered epigenetic landscapes and can be overcome by wild introgression. These genomic insights will empower efforts to manipulate genetic recombination and modify epigenetic landscapes and target genes for crop improvement.</p>
dc.description.comments <p>This article is published as Chen, Z. Jeffrey, Avinash Sreedasyam, Atsumi Ando, Qingxin Song, Luis M. De Santiago, Amanda M. Hulse-Kemp, Mingquan Ding et al. "Genomic diversifications of five Gossypium allopolyploid species and their impact on cotton improvement." <em>Nature Genetics</em> (2020). doi: <a href="">10.1038/s41588-020-0614-5</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1405
dc.identifier.contextkey 17500356
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath eeob_ag_pubs/399
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:56:54 UTC 2022
dc.source.uri 10.1038/s41588-020-0614-5
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Ecology and Evolutionary Biology
dc.subject.disciplines Genetics and Genomics
dc.title Genomic diversifications of five Gossypium allopolyploid species and their impact on cotton improvement
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 6d2c458f-b99a-4af5-8869-8b7b2e304592
relation.isOrgUnitOfPublication 6fa4d3a0-d4c9-4940-945f-9e5923aed691
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