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Transcriptome and organellar sequencing highlights the complex origin and diversification of allotetraploid Brassica napus
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An, Hong, Qi, Xinshuai, Gaynor, Michelle L., Hao, Yue, Gebken, Sarah C., Mabry, Makenzie E., McAlvay, Alex C., Teakle, Graham R., Conant, Gavin C., Barker, Michael S., Fu, Tingdong, Yi, Bin and Pires, J. Chris (2019) Transcriptome and organellar sequencing highlights the complex origin and diversification of allotetraploid Brassica napus. Nature Communications, 10 (1). 2878. doi:10.1038/s41467-019-10757-1 ISSN 2041-1723.
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Official URL: https://doi.org/10.1038/s41467-019-10757-1
Abstract
Brassica napus, an allotetraploid crop, is hypothesized to be a hybrid from unknown varieties of Brassica rapa and Brassica oleracea. Despite the economic importance of B. napus, much is unresolved regarding its phylogenomic relationships, genetic structure, and diversification. Here we conduct a comprehensive study among diverse accessions from 183 B. napus (including rapeseed, rutabaga, and Siberian kale), 112 B. rapa, and 62 B. oleracea and its wild relatives. Using RNA-seq of B. napus accessions, we define the genetic diversity and sub-genome variance of six genetic clusters. Nuclear and organellar phylogenies for B. napus and its progenitors reveal varying patterns of inheritance and post-formation introgression. We discern regions with signatures of selective sweeps and detect 8,187 differentially expressed genes with implications for B. napus diversification. This study highlights the complex origin and evolution of B. napus providing insights that can further facilitate B. napus breeding and germplasm preservation.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QK Botany | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Rape (Plant) -- Genetics, Biotechnology, Brassica | |||||||||
Journal or Publication Title: | Nature Communications | |||||||||
Publisher: | Nature Publishing Group | |||||||||
ISSN: | 2041-1723 | |||||||||
Official Date: | 28 June 2019 | |||||||||
Dates: |
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Volume: | 10 | |||||||||
Number: | 1 | |||||||||
Article Number: | 2878 | |||||||||
DOI: | 10.1038/s41467-019-10757-1 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 2 August 2019 | |||||||||
Date of first compliant Open Access: | 2 August 2019 | |||||||||
RIOXX Funder/Project Grant: |
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