Comparative analysis of the transcriptomes and primary metabolite profiles of adventitious roots of five Panax ginseng cultivars

详细信息    查看全文

• 作者：Yun Sun Lee¹ ; ^☆ ; Hyun-Seung Park¹ ; ^☆ ; Dong-Kyu Lee² ; ^☆ ; Murukarthick Jayakodi¹ ; Nam-Hoon Kim¹ ; Sang-Choon Lee¹ ; Atreyee Kundu¹ ; ³ ; Dong-Yup Lee⁴ ; ⁵ ; Young Chang Kim⁶ ; Jun Gyo In⁷ ; Sung Won Kwon² ; ^{swkwon@snu.ac.kr} ; Tae-Jin Yang¹ ; ⁸ ; ^{tjyang@snu.ac.kr}
• 关键词：adventitious root ; metabolome ; Panax ginseng ; primary metabolic pathways ; transcriptome
• 刊名：Journal of Ginseng Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：41
• 期：1
• 页码：60-68
• 全文大小：1200 K
• 卷排序：41

文摘

Various Panax ginseng cultivars exhibit a range of diversity for morphological and physiological traits. However, there are few studies on diversity of metabolic profiles and genetic background to understand the complex metabolic pathway in ginseng.MethodsTo understand the complex metabolic pathway and related genes in ginseng, we tried to conduct integrated analysis of primary metabolite profiles and related gene expression using five ginseng cultivars showing different morphology. We investigated primary metabolite profiles via gas chromatography–mass spectrometry (GC-MS) and analyzed transcriptomes by Illumina sequencing using adventitious roots grown under the same conditions to elucidate the differences in metabolism underlying such genetic diversity.ResultsGC-MS analysis revealed that primary metabolite profiling allowed us to classify the five cultivars into three independent groups and the grouping was also explained by eight major primary metabolites as biomarkers. We selected three cultivars (Chunpoong, Cheongsun, and Sunhyang) to represent each group and analyzed their transcriptomes. We inspected 100 unigenes involved in seven primary metabolite biosynthesis pathways and found that 21 unigenes encoding 15 enzymes were differentially expressed among the three cultivars. Integrated analysis of transcriptomes and metabolomes revealed that the ginseng cultivars differ in primary metabolites as well as in the putative genes involved in the complex process of primary metabolic pathways.ConclusionOur data derived from this integrated analysis provide insights into the underlying complexity of genes and metabolites that co-regulate flux through these pathways in ginseng.