ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (6): 26-32. doi: 10.7668/hbnxb.20190004

Special Issue: Tobacco Biotechnology

• Crop Genetics·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Cloning and Expression Analysis of Myb Transcription Factor NtBL1 Gene in Nicotiana tabacum

LIU Yajie, XUE Chong, QIU Shirui, LI Xiang, TANG Liwen, ZENG Shuhua   

  1. College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2019-08-30 Published:2019-12-28

Abstract: In order to discover the function of Blind gene in Nicotiana tabacum, we cloned one Blind-like gene, NtBL1, from K326 by homologue cloning method. The protein domain and structure was predicted by PROSITE(ExPASy), Sopma and Swissmodel, the Phylogeny tree construction and Motif prediction of NtBL1 and its homologues were analyzed separately by Mega 7.0 and MEME, the expression pattern of NtBL1 in different tissues was analyzed by semi-quantitative PCR, and the expression changes of NtBL1 under abiotic stress treatment was detected by qRT-PCR. The results showed that the coding sequence of NtBL1 was 1 014 bp, encoding 337 aa. The expression pattern of NtBL1 in transcription level was generally detected in several organs and growing stages, while it had the highest expression level in root. Bioinformation analysis showed that NtBL1 was a typical R2R3 Myb protein, which contained 2 Myb-type HTH domains. The phylogenetic tree analysis showed that NtBL1 gene was shared lots of motifs with tomato Blind. The results of qRT-PCR showed that the expression level of NtBL1 gene was up-regulated by ABA treatment and the highest expression level appeared in 24 h treatment; The expression level of NtBL1 gene was down-regulated by NaCl treatment and the lowest expression level presented in 24 h treatment. In conclusion, NtBL1 gene might participate in regulation of axillary mersitem development by ABA and NaCl.

Key words: Tobacco, NtBL1, Myb gene family, Gene expression

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Cite this article

LIU Yajie, XUE Chong, QIU Shirui, LI Xiang, TANG Liwen, ZENG Shuhua. Cloning and Expression Analysis of Myb Transcription Factor NtBL1 Gene in Nicotiana tabacum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(6): 26-32. doi: 10.7668/hbnxb.20190004.

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