›› 2018, Vol. 30 ›› Issue (4): 607-613.DOI: 10.3969/j.issn.1004-1524.2018.04.12

• Horticultural Science • Previous Articles     Next Articles

Cloning and expression analysis of PacAMR1 gene in sweet cherry

LI Jingxia1, XIA Hui1, 2, LYU Xiulan1, 2, WANG Jin1, 2, LIANG Dong1, 2, *   

  1. 1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2. Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2017-10-07 Online:2018-04-20 Published:2018-04-19

Abstract: Ascorbic acid (AsA) biosynthesis in plants occurs through a complex network. Regulation about this network is largely uncharacterized. PacAMR1, a gene that regulates pathway on AsA biosynthesis was identified from sweet cherry by reverse transcription-polymerase chain reaction (RT-PCR). The results of homology analysis showed that PacAMR1 protein shares high sequence similarity with that of other plants. Real-time PCR analysis showed that the relative expression level of PacAMR1 increased gradually with the development of fruit, however the AsA content was higher in early phage of fruit development. As leaves aged, PacAMR1transcripts accumulated with a concomitant increase. In contrast, the AsA content was highest in young leaves and lowest in old leaves. These results indicated that PacAMR1 appears to play an important role in modulating AsA biosynthesis in sweet cherry by negative regulating.

Key words: ascorbic acid, AMR1 gene, regulation, sweet cherry

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