Diversity of Kale (Brassica oleracea var. sabellica): Glucosinolate Content and Phylogenetic Relationships

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• 作者：Christoph Hahn ; Anja Müller ; Nikolai Kuhnert ; Dirk Albach
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2016
• 出版时间：April 27, 2016
• 年：2016
• 卷：64
• 期：16
• 页码：3215-3225
• 全文大小：508K
• 年卷期：0
• ISSN：1520-5118

文摘

Recently, kale has become popular due to nutritive components beneficial for human health. It is an important source of phytochemicals such as glucosinolates that trigger associated cancer-preventive activity. However, nutritional value varies among glucosinolates and among cultivars. Here, we start a systematic determination of the content of five glucosinolates in 25 kale varieties and 11 non-kale Brassica oleracea cultivars by HPLC-DAD-ESI-MSⁿ and compare the profiles with results from the analysis of SNPs derived from a KASP genotyping assay. Our results demonstrate that the glucosinolate levels differ markedly among varieties of different origin. Comparison of the phytochemical data with phylogenetic relationships revealed that the common name kale refers to at least three different groups. German, American, and Italian kales differ morphologically and phytochemically. Landraces do not show outstanding glucosinolate levels. Our results demonstrate the diversity of kale and the importance of preserving a broad genepool for future breeding purposes.