JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (03): 183-186.doi: 10.3969/j.issn.1000-2006.2015.03.033

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Differential expression of flower color related genes of Osmanthus fragrans Lour. ‘Chenghongdangui’ and ‘Zaoyingui’

MU Hongna1, 2,3,SUN Taoze3,YANG Xiulian1,2, WANG Lianggui1,2*   

  1. 1. College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China;
    2. Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;
    3.College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, China
  • Online:2015-05-30 Published:2015-05-30

Abstract: The analysis of anthocyanin, carotenoid content and flower color gene expression of Osmanthus fragrans transcriptome between ‘Chenghongdangui’ and ‘Zaoyingui’ were carried out. Some genes such as phenylalanine ammonia lyase, 4-CoA ligasecoumaric acid, acetyl CoA synthase, chalcone synthase, R2R3-MYB1, cytochrome P450, lycopene epsilon cyclase did present up regulation in ‘Chenghongdangui’ petals not ‘Zaoyinggui’, which was consistent with the anthocyanin and carotenoid content in ‘Chenghongdangui’ and ‘Zaoyinggui’. In contrast, the expression profile of other genes was up regulation in ‘Zaoyingui. In addition, polyphenol oxidase(PPO), cytochrome P450 gene and R2R3-MYB that probably regulated pigments accumulation of O.fragrans were analyzed in this article. Meanwhile the novel discovery that the flavonoids metabolic pathway direct to dihydroquercetin at metabolism web junction, that is naringenin, and then synthesized cyanidin with catalyzing of DFR and ANS was found out in this study.

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