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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (4): 791-801.doi: 10.16420/j.issn.0513-353x.2022-0066

• Research Papers • Previous Articles     Next Articles

Identification of Anthocyanin Compositions and Expression Analysis of Key Related Genes in Fragaria × ananassa

YUAN Huazhao, PANG Fuhua, WANG Jing, CAI Weijian, XIA Jin, ZHAO Mizhen()   

  1. Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement,Institute of Pomology,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China
  • Received:2022-11-28 Revised:2023-03-07 Online:2023-04-25 Published:2023-04-27
  • Contact: *(E-mail:njzhao@163.com

Abstract:

HPLC-MS/MS was applied to establish a method to isolate and identify anthocyanins in Fragaria × ananassa fruit,and anthocyanins from 12 strawberry cultivars with different fruit colors were analyzed qualitatively and quantitatively. Meanwhile,a comparative analysis was made on the number and chromosome location of genes related to anthocyanin synthesis between diploid(F. vesca)and octoploid(F. × ananassa)strawberry genome,and the transcription levels of which during fruit development were analyzed by RNA-Seq and qRT-PCR. In this study,totally eight anthocyanin components were detected,and peonidin-3-O-glucoside,peonidin-malonylglucoside and peonidin-3-methylmalonylglucoside were first detected in F. × ananassa. Pelargonidin-3-glucoside was the main anthocyanin in all 12 strawberry cultivars,while the total contents were different. Seventy-three genes related to anthocyanin synthesis were identified in the F. × ananassa genome distributed uniformly in four subgenomes,which were almost three-or four-fold than in the F. vesca genome. The results of RNA-Seq showed that on the whole there was no significant difference and biased expression between the expression levels of multi-copy genes in F.×ananassa fruit. The expression levels of key structural genes for anthocyanin synthesis(PAL1,CHS,CHI,F3H,DFR1,ANS,UFGT),transportation(GST)and transcription regulatory factor MYB10 were significantly increased during fruit development,especially during anthocyanin accumulation stages,suggesting that these genes play key roles in anthocyanin accumulation in strawberry fruits.

Key words: Fragaria × ananassa, fruit, color, anthocyanin, polyploid

CLC Number: