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The high-quality genome of Brassica napus cultivar ‘ZS11’ reveals the introgression history in semi-winter morphotype
Sun F.7; Fan G.1; Hu Q.7; Zhou Y.9; Guan M.10; Tong C.7; Li J.6; Du D.2; Qi C.8; Jiang L.4; Liu W.1; Huang S.7; Chen W.1; Yu J.7; Mei D.7; Meng J.9; Zeng P.1; Shi J.7; Liu K.9; Wang X.1; Wang X.7; Long Y.9; Liang X.1; Hu Z.7; Huang G.1; Dong C.7; Zhang H.1; Li J.7; Zhang Y.1; Li L.1; Shi C.1; Wang J.1; Lee S.M.-Y.3; Guan C.10; Xu X.1; Liu S.7; Liu X.1; Chalhoub B.5; Hua W.7; Wang H.7
Source PublicationPlant Journal
ISSN1365313X 09607412

Allotetraploid oilseed rape (Brassica napus L.) is an agriculturally important crop. Cultivation and breeding of B. napus by humans has resulted in numerous genetically diverse morphotypes with optimized agronomic traits and ecophysiological adaptation. To further understand the genetic basis of diversification and adaptation, we report a draft genome of an Asian semi-winter oilseed rape cultivar ‘ZS11’ and its comprehensive genomic comparison with the genomes of the winter-type cultivar ‘Darmor-bzh’ as well as two progenitors. The integrated BAC-to-BAC and whole-genome shotgun sequencing strategies were effective in the assembly of repetitive regions (especially young long terminal repeats) and resulted in a high-quality genome assembly of B. napus ‘ZS11’. Within a short evolutionary period (~6700 years ago), semi-winter-type ‘ZS11’ and the winter-type ‘Darmor-bzh’ maintained highly genomic collinearity. Even so, certain genetic differences were also detected in two morphotypes. Relative to ‘Darmor-bzh’, both two subgenomes of ‘ZS11’ are closely related to its progenitors, and the ‘ZS11’ genome harbored several specific segmental homoeologous exchanges (HEs). Furthermore, the semi-winter-type ‘ZS11’ underwent potential genomic introgressions with B. rapa (A). Some of these genetic differences were associated with key agronomic traits. A key gene of A03.FLC3 regulating vernalization-responsive flowering time in ‘ZS11’ was first experienced HE, and then underwent genomic introgression event with A, which potentially has led to genetic differences in controlling vernalization in the semi-winter types. Our observations improved our understanding of the genetic diversity of different B. napus morphotypes and the cultivation history of semi-winter oilseed rape in Asia.

KeywordAllotetraploid Brassica Napus Genome Homoeolog Introgression Next-generation Sequencing Technologies Polyploid Subgenome Zs11
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WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000412932100010
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Cited Times [WOS]:120   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Affiliation1.Beijing Genome Institute-Shenzhen
2.National Key Laboratory Breeding Base for Innovation and Utilization of Plateau Crop Germplasm
3.State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences
4.Shichun Academy of Agricultural Sciences
5.Genomique Vegetale
6.Southwest China Normal University
7.Chinese Academy of Agricultural Sciences
8.Jiangsu Academy of Agricultural Sciences
9.Huazhong Agricultural University
10.Hunan Agricultural University
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GB/T 7714
Sun F.,Fan G.,Hu Q.,et al. The high-quality genome of Brassica napus cultivar ‘ZS11’ reveals the introgression history in semi-winter morphotype[J]. Plant Journal,2017,92(3):452-468.
APA Sun F..,Fan G..,Hu Q..,Zhou Y..,Guan M..,Tong C..,Li J..,Du D..,Qi C..,Jiang L..,Liu W..,Huang S..,Chen W..,Yu J..,Mei D..,Meng J..,Zeng P..,Shi J..,Liu K..,...&Wang H..(2017).The high-quality genome of Brassica napus cultivar ‘ZS11’ reveals the introgression history in semi-winter morphotype.Plant Journal,92(3),452-468.
MLA Sun F.,et al."The high-quality genome of Brassica napus cultivar ‘ZS11’ reveals the introgression history in semi-winter morphotype".Plant Journal 92.3(2017):452-468.
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