Characterization of Brassica napus Flavonol Synthase Involved in Flavonol Biosynthesis in Brassica napus L.

Tien Thanh Vu, Chan Young Jeong, Hoai Nguyen Nguyen, Dongho Lee, Sang A. Lee, Ji Hye Kim, Suk Whan Hong, Hojoung Lee

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30 Citations (Scopus)


Recently, Brassica napus has become a very important crop for plant oil production. Flavonols, an uncolored flavonoid subclass, have a high antioxidative effect and are known to have antiproliferative, antiangiogenic, and neuropharmacological properties. In B. napus, some flavonoid structural genes have been identified, such as, BnF3H-1, BnCHS, and BnC4H-1. However, no studies on FLS genes in B. napus have been conducted. Thus, in this study, we cloned and characterized the function of BnFLS gene B. napus. By overexpression of the BnFLS gene, flavonol (kaempferol and quercetin) levels were recovered in the Arabidopsis atfls1-ko mutant. In addition, we found that the higher endogenous flavonol levels of BnFLS-ox in vitro shoots correlated with slightly higher ROS scavenging activities. Thus, our results indicate that the BnFLS gene encodes for a BnFLS enzyme that can be manipulated to specifically increase flavonol accumulation in oilseed plants and other species such as Arabidopsis.

Original languageEnglish
Pages (from-to)7819-7829
Number of pages11
JournalJournal of Agricultural and Food Chemistry
Issue number35
Publication statusPublished - 2015 Sept 9


  • anthocyanin
  • BnFLS
  • Brassica napus
  • flavonoids
  • flavonols
  • oilseed

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Chemistry(all)


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