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Identification of a Monosomic Alien Chromosome Addition Line Responsible for the Purple Color Trait in Heading Chinese Cabbage

文献类型： 外文期刊

作者： Xin, Xiaoyun 1 ; Zhang, Deshuang 1 ; Zhao, Hong 1 ; Su, Tongbing 1 ; Zhao, Xiuyun 1 ; Wang, Weihong 1 ; Li, Peirong 1 ; Yu, Yangjun 1 ; Wang, Jiao 1 ; Yu, Shuancang 1 ; Zhang, Fenglan 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci BAAFS, Beijing Vegetable Res Ctr BVRC, Beijing 100097, Peoples R China

2.Natl Engn Res Ctr Vegetables, Beijing 100097, Peoples R China

3.Minist Agr, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 100097, Peoples R China

4.Beijing Key Lab Vegetable Germplasm Improvement, Beijing 100097, Peoples R China

关键词： purple; anthocyanin; Chinese cabbage; addition line; Brassica genome variation; LDOX

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2023 年 9 卷 2 期

页码：

收录情况： SCI

摘要： Purple heading Chinese cabbage has become popular in recent years due to its attractive color and health benefits. However, purple varieties remain rare, and the regulation mechanism of anthocyanin accumulation in Chinese cabbage is still largely unknown. By introducing the purple color trait from Brassica juncea, a new purple heading Chinese cabbage cultivar (18M-245) was generated with deep purple leaves at both the seedling and adult stages. Anthocyanin accumulation in 18M-245 increased when grown at low temperatures. FISH and genotyping results showed that the purple trait was caused by an alien chromosome addition line derived from the Brassica B genome. The LDOX coding gene BjuB014115 from the addition line was highly expressed in 18M-245, consistent with the results of anthocyanin accumulation. Meanwhile, several MYB and bHLH transcriptional factors from the Brassica A genome were found to directly bind to the promoter of BjuB014115, suggesting that interactions between the Brassica A and B genomes are involved in the regulatory network of anthocyanin biosynthesis in Chinese cabbage. Our results provide new insights into the regulation mechanism of anthocyanin biosynthesis in purple heading Chinese cabbage.

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