New research reveals why cabbage is so rich in intra-species differentiation

The genetic relationship of 524 cabbage varieties Photo courtesy of the Chinese Academy of Agricultural Sciences

The structural variation in BrPIN3.
3 is related to the domestication of Chinese cabbage leaf bulbs.
Image courtesy of theChinese Academy of Agricultural Sciences

Recently, " Genome Biology " ( Genome Biology ) published online the vegetable molecular design and breeding innovation team of the Institute of Vegetables and Flowers of the Chinese Academy of Agricultural Sciences revealed the mechanism of polyploidization and structural variation on the intraspecific differentiation of cabbage
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The study identified important candidate genes related to the domestication of head cabbage, and obtained abundant genomic variation of cabbage species

According to Wang Xiaowu, the corresponding author of the paper, cabbage is an important vegetable of the Brassica genus with extremely high diversity within the species
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Based on the large-scale re-sequencing data of cabbage, the study selected 16 different types of cabbage resource materials, including representative Chinese cabbage, Chinese cabbage, Chinese cabbage, oily cabbage and turnip, for genome de novo assembly

In addition, studies have found that during the process of intraspecific differentiation of cabbage, the loss of gene bias continues, and the subgenomic advantage of cabbage continues to expand
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The results of the study indicate that in addition to the "two-step evolution" that leads to the formation of subgenomic dominance in cabbage, genome composition may be another important factor leading to the formation of subgenomic dominance

The research was supported by the National Natural Science Foundation of China, the National Key Research Project Program and the Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences

Related paper information: https://doi.