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Journal of Tea Science ›› 2018, Vol. 38 ›› Issue (6): 580-588.doi: 10.13305/j.cnki.jts.2018.06.004

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Cloning and Functional Analysis of the CsMYB Promoter In Tea Plant (Camellia sinensis L.)

ZHENG Shizhong1,2, JIANG Shengtao1,2, LIU Wei1,2, CHEN Meixia1,2, LIN Yuling3, LAI Zhongxiong3,*, LIN Jinke4,*   

  1. 1. College of Life Science, Ningde Normal University, Ningde 352100, China;
    2. Institute of Fujian Higher Education for Local Bio-resources in Ningde City, Ningde 352100, China;
    3. Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    4. Anxi College of Tea Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2018-06-07 Revised:2018-08-09 Online:2018-12-15 Published:2019-12-15

Abstract: The 1β828βbp full-length gDNA of CsMYB and a 1β038βbp 5′-flanking sequence of CsMYB (named proMYB) were cloned from the shoots of tea cultivar ‘1005’by gDNA cloning and genome-walking method. Bioinformatics analysis showed that the gDNA of CsMYB contained 2 introns and 3 extrons. The cis-acting element analysis showed that the proMYB promoter contained 5′-UTR Py-rich stretch motifs, TATA-box, CAAT-box core elements putative elements responding to hormone, light, stresses and some cis-elements with unknown or specific function, suggesting the inducible character of proMYB. It was also implied that CsMYB might be involved in abiotic stress responses and hormonal signal transduction in tea plant. The transient expression in transformed tobacco showed that the proMYB could drive the expressions of downstream genes.

Key words: Camellia sinensis, CsMYB, promoter, Cis-acting element, transient expression

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