Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (1): 53-62. doi: 10.7668/hbnxb.20193361

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Analysis of Flavonoid Metabolism in Different Cultivated Pepino Fruits Based on Transcriptome and Metabolome

SI Cheng, YANG Shipeng, SUN Zhu, ZHANG Guangnan, ZHONG Qiwen   

  1. Academy of Agriculture and Forestry Sciences,Qinghai University,Qinghai Key Laboratory of Vegetable Genetics and Physiology,Xining 810016,China
  • Received:2022-05-09 Published:2023-02-28

Abstract:

In order to understand the main flavonoids and the key synthase genes related to flavonoids and clarify the differences of flavonoids among different pepino.Combined metabolomic and transcriptomic analyses were carried out with the mature pepino(LOF and SRF)currently main cultivars in China.The results showed that 9 kinds of secondary metabolites and 41 kinds of tertiary metabolites were identified,and the flavonols content was the highest.There were 21 metabolites with significant differences in flavonoid components,which were distributed in 6 secondary metabolites such as flavanols,flavonoid carbonoside.The total content of dihydroflavonol,flavanols and isoflavones was higher in the Light-oval fruit(LOF)than in the Sweet-round fruit(SRF),while other compounds including flavonols were higher in the SRF.A total of 503 genes related to flavonoid synthesis were identified by RNA-seq analysis,the expression of Phenylalanine ammonia-lyase(PAL),Cinnamyl alcohol dehydrogenase(CAD),and Flavanone-3-Hydroxylase(F3H)which were key genes for upstream stage of the whole process of pepino flavonoid synthesis,were all up-regulated in LOF compared to SRF.Flavonol synthase gene expression was consistently higher in SRF than LOF.According to the result of transcriptome,the expressed trend of 4 flavonoid synthases agreed with the testing by the RT-PCR.The results showed that a large number of flavonoid compounds and their synthase genes were present in different cultivars of pepino.However,the content of different flavonoid components and the activities of enzymes related to its assimilation and is varied among different resources.

Key words: Pepino, Flavonoids, Transcriptome, Metabolome

Cite this article

SI Cheng, YANG Shipeng, SUN Zhu, ZHANG Guangnan, ZHONG Qiwen. Analysis of Flavonoid Metabolism in Different Cultivated Pepino Fruits Based on Transcriptome and Metabolome[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(1): 53-62. doi: 10.7668/hbnxb.20193361.

share this article