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The genome of the mesopolyploid crop species Brassica rapa
The annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage, and used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution.
Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome
The polyploid genome of Brassica napus, which originated from a recent combination of two distinct genomes approximately 7500 years ago and gave rise to the crops of rape oilseed, is sequenced.
The genome of the cucumber, Cucumis sativus L.
This study establishes that five of the cucumber's seven chromosomes arose from fusions of ten ancestral chromosomes after divergence from Cucumis melo, and identifies 686 gene clusters related to phloem function.
SLAF-seq: An Efficient Method of Large-Scale De Novo SNP Discovery and Genotyping Using High-Throughput Sequencing
This study reports the highest density genetic map yet created for any organism without a reference genome sequence, common carp in this case, using SLAF-seq data, and provides a high-resolution strategy for large-scale genotyping that can be generally applicable to various species and populations.
BRAD, the genetics and genomics database for Brassica plants
BRAD, a new database which focuses on the genetics and genomics of the Brassica plants has been developed, it aims at helping scientists and breeders to fully and efficiently use the information of genome data of Brassicas plants.
The Brassica oleracea genome reveals the asymmetrical evolution of polyploid genomes
A draft genome sequence of Brassica oleracea is described, comparing it with that of its sister species B. rapa to reveal numerous chromosome rearrangements and asymmetrical gene loss in duplicated genomic blocks.
Deciphering the Diploid Ancestral Genome of the Mesohexaploid Brassica rapa[C][W]
- Feng Cheng, T. Mandáková, Jian Wu, Q. Xie, M. Lysak, Xiaowu Wang
- Biology, MedicinePlant Cell
- 1 May 2013
A two-step merging of three tPCK-like genomes is proposed to form the hexaploid ancestor of the tribe Brassiceae with 42 chromosomes, thus revising the key reference genome for evolutionary genomics of crucifers.
An atlas of over 90,000 conserved noncoding sequences provides insight into crucifer regulatory regions
Sequencing of genomes from three Brassicaceae species and their joint analysis with six previously sequenced crucifer genomes confirm that most of the identified CNSs are evolving under medium to strong purifying selection, and highlight both similarities and several key differences between the regulatory DNA of plants and other species.
Genome triplication drove the diversification of Brassica plants
The WGT event initiated subsequent genomic and gene-level evolution, which further drove Brassica speciation and created rich morphotypes in each species, according to the subgenome dominance effect and biased gene retention.
Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa
The differences in gene expression patterns and on-going gene death among the three subgenomes suggest that “two-step" genome triplication and differential subgenome methylation played important roles in the genome evolution of B. rapa.