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Acta Horticulturae Sinica ›› 2020, Vol. 47 ›› Issue (12): 2290-2300.doi: 10.16420/j.issn.0513-353x.2020-0185

• Research Papers • Previous Articles     Next Articles

DRL1,a NAC Gene from Vitis vinifera‘Yatomo Rose’,Negatively Regulates the Drought Tolerance

ZHU Ziguo1,YIN Qizhong1,ZHANG Qingtian1,HAN Zhen1,ZHANG Qian2,and LI Bo1,*   

  1. 1Shandong Insititute of Pology,Tai’an,Shandong 271000,China;2College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai’an,Shandong 271018,China
  • Online:2020-12-25 Published:2021-01-06

Abstract: The function of NAC transcription factor DRL1,isolated from Vitis vinifera‘Yatomo Rose’,was characterized using the fluorescence quantitative PCR and transgenic technology. Under the hormone and stress treatments,the expression of DRL1 decreased with the strongest reduction in ABA and drought treatments. Exposed to ABA,DRL1 transgenic plants reduced the germination rate and root length. Treated with drought stress,DRL1 enhanced the sensitivity to drought tolerance and the stress related genes,such as NtLEA5,NtP5CR1,NtPSCS1,NtERD10C and NtDREB3,were down-regulated in transgenic plants. Moreover,DRL1 restrained the development of stele,and the vessel area was only 58% of wild tobacco. According to these results,DRL1 might negatively regulate drought stress.

Key words: grapevine, NAC transcription factor, drought tolerance, stem development

CLC Number: